Small-Sided Games vs. High-Intensity Interval Training on Body Composition of Female Handball Players / Juegos Reducidos vs Entrenamiento Interválico de Alta Intensidad sobre la Composición Corporal de Jugadoras de Balonmano

SUMMARY: The purpose of this study was to compare the effects of different training programs based on small-sided games (SSG) and high-intensity interval training (HIIT) on the body composition of female handball players. A total of 45 female handball players (age: 16.13±0.89 years; training experience: 6.18±1.33 years) were assigned to three groups: game group (GG; N = 15), running group (RG; N = 15), and control group (CON; N = 15). The training programs lasted eight weeks, with two training sessions per week. The GG performed three vs. three small-sided games on a 20 m x 20 m court; the RG performed 15 s HIIT running followed by 15 s of active recovery; the CON group maintained regular handball training. Regardless of the group assignment, all participants were measured for each of the following variables: Body height, body mass, fat-free mass, fat mass, muscle mass, intracellular water, and extracellular water. The results demonstrate significant differences (p0.01) in muscle mass. The GG showed significant (p<0.001) greater improvement in these body composition variables than RG and CON. Body composition variables improved with GG, moving from 2.04 % in fat mass to 1.3 % in extracellular water. In the RG, results show significant improvements (p<0.001) only in intra- and extracellular water. The CON shows improvements in fat-free mass, muscle mass, intracellular water, and extracellular water. To conclude, eight weeks of SSG in handball provide better changes in body composition compared to HIIT 15 s - 15 s and handball training alone.

El propósito de este estudio fue comparar los efectos de diferentes programas de entrenamiento basados en juegos reducidos (SSG) y entrenamiento interválico de alta intensidad (HIIT) sobre la composición corporal de jugadoras de balonmano. Un total de 45 jugadoras de balonmano (edad: 16,13 ± 0,89 años; experiencia de entrenamiento: 6,18 ± 1,33 años) fueron asignadas a tres grupos: grupo de juego (GG; N = 15), grupo de carrera (RG; N = 15) y grupo de control (CON; N = 15). Los programas de formación duraron ocho semanas, con dos sesiones de formación por semana. El GG realizó partidos reducidos de tres contra tres en una cancha de 20 x 20 m; el RG realizó 15 s de carrera HIIT seguidos de 15 s de recuperación activa; El grupo CON mantuvo un entrenamiento regular de balonmano. Independientemente de la asignación de grupo, a todos los participantes se les midió cada una de las siguientes variables: altura corporal, masa corporal, masa libre de grasa, masa grasa, masa muscular, agua intracelular y agua extracelular. Los resultados demuestran diferencias significativas (p0,01) en la masa muscular. El GG mostró una mejora significativa (p<0,001) mayor en estas variables de composición corporal que RG y CON. Las variables de composición corporal mejoraron con GG, pasando de un 2,04 % en masa grasa a un 1,3 % en agua extracelular. En el RG, los resultados mostraron mejoras significativas (p<0,001) sólo en el agua intra y extracelular. El CON indicó mejoras en la masa magra, la masa muscular, el agua intracelular y el agua extracelular. En conclusión, ocho semanas de SSG en balonmano proporcionan mejores cambios en la composición corporal en comparación con el HIIT de 15 s - 15 s y el entrenamiento de balonmano solo.

Exercise addiction: a comparison between runners, cyclists, swimmers, and triathletes / Dependência ao exercício: uma comparação entre corredores, ciclistas, nadadores e triatletas / dicción al ejercicio: una comparación entre corredores, ciclistas, nadadores y triatletas

The aim of the present study was to evaluate and compare exercise addiction (EA) between runners, cyclists, swimmers, and triathletes. Took part in this study 39 runners, 32 cyclists, 30 swimmers and 38 triathletes. Exercise Dependence Scale (EDS), and the Exercise Addiction Inventory (EAI) was used to evaluate the EA and classified the participants into: at-risk for EA, nondependent-symptomatic, and nondependent-asymptomatic. Most participants were classified as nondependent symptomatic for EA. The EDS total score was significantly lower in the swimmers compared to the cyclists and triathletes and the EAI total score was significantly higher for cyclists compared to runners. Therefore, in both instruments, the majority of participants was nondependent symptomatic for EA (AU).

O objetivo do presente estudo foi avaliar e comparar a dependência ao exercício (DE) entre corredores, ciclistas, nadadores e triatletas. Participaram do estudo 39 corredores, 32 ciclistas, 30 nadadores e 38 triatletas. As escalas Exercise Dependence Scale (EDS) e Exercise Addiction Inventory (EAI) foram usadas para a avaliação da DE e classificaram os participantes em três categorias: em risco de DE, não dependente sintomático e não dependente assintomático. A maioria dos participantes foram classificadas como não dependentes sintomáticos para DE. O escore da EDS foi significativamente menor nos nadadores comparado aos ciclistas e triatletas e o escore total da EAI foi significantemente maior nos ciclistas comparado aos corredores. Portanto, em ambos os instrumentos, a maioria dos participantes foi não dependente sintomático para DE (AU).

El objetivo del presente estudio fue evaluar y comparar la adicción al ejercicio (AE) entre corredores, ciclistas, nadadores y triatletas. Participaron de este estudio 39 corredores, 32 ciclistas, 30 nadadores y 38 triatletas. La Escala de Dependencia al Ejercicio (EDS) y el Inventario de Adicción al Ejercicio (EAI) fueron utilizados para evaluar la AE y clasificaron a los participantes en tres categorías: en riesgo de AE, no dependiente-sintomático y no dependiente-asintomático. La mayoría de los participantes se clasificaron como no dependiente-sintomático para AE. La puntuación EDS fue significativamente menor en nadadores en comparación con ciclistas y triatletas y la puntuación EAI total fue significativamente mayor en ciclistas en comparación con corredores. Por lo tanto, en ambos instrumentos, la mayoría de los participantes eran sintomáticos no dependientes para AE

Biomechanical parameters assessed during running among running-related athletes with recurrent hamstring strain injury: A scoping review

Background@#Hamstring strain injury (HSI) is the most common cause of missing practices and sporting events among running-related athletes. The incidence rate of recurrence in individuals with HSI ranges from 12% to 63%. While various risk factors for HSI have been identified, the alterations and role of biomechanical factors as potential causes of injury have been largely overlooked. @*Objectives@#To report the critical biomechanical parameters assessed among running-related athletes with a recurrent HSI and to present common testing protocols in assessing the biomechanical parameters among running-related athletes with a recurrent HSI. @*Methods@#Eligibility Criteria: Included studies investigated biomechanical parameters assessed among collegiate or elite running-related athletes with recurrent HSI. Sources of Evidence: This scoping review was registered in OSF and was conducted based on PRISMA-ScR. Six electronic databases were systematically searched from 1993 to May 2022. Charting Methods: The reviewers created a data charting tool for the scoping review.@*Results@#Out of 874 articles, a total of 10 articles were included in the scoping review. The critical biomechanical parameters assessed include trunk flexion, hip flexion, and knee extension angles (kinematic variables), flight and stance times and velocity (spatiotemporal variables), and EMG activity of biceps femoris, semitendinosus, semimembranosus, vastus lateralis, and rectus femoris, knee flexion and extension angle peak joint torque (kinetic variables). The most common running test protocols used were the 30-meter overground repeated sprint test, a percentage of maximum running velocity (treadmill), and repeated sprints on a non-motorized treadmill. The most common protocols for isokinetic muscle testing were 60 degrees (concentric), 300 degrees (concentric), and 180 degrees (eccentric) per second angular velocities.@*Conclusion@#The review demonstrated a need for more research on this topic, leading to only limited biomechanical parameters being discussed in the literature. This underscores the need for more rigorous research that could have practical applications for athletes and coaches.

Lived experiences of UAAP Season 84 and NCAA Season 97 student-athletes in their bubble set-up training during the COVID-19 pandemic: A research protocol

Background@#The COVID-19 pandemic has greatly affected the sports industry, postponing events worldwide. To adapt to the situation, athletes have been forced to train at home. Bubble training was introduced to provide a safe and conducive training environment while adhering to government health protocols. However, concerns have emerged regarding the set-up’s implementation.@*Objective@#The study aims to explore the lived experiences of UAAP Season 84 and NCAA Season 97 student-athletes who underwent bubble training.@*Methods@#The study will employ a qualitative phenomenological approach based on Seligman's Well-Being Theory. A purposive sampling technique will be used to recruit at least seven eligible student-athletes. Data will be collected through on-site or online interviews using a semi-structured interview guide to reveal a narrative of the student-athletes' bubble training experiences, common themes, and patterns. Deductive thematic analysis approach will be used with the help of the NVivo software program.@*Expected Results@#This study is expected to develop themes from the daily bubble training routines, habits, coping strategies, and perceived thoughts and feelings of Filipino collegiate student-athletes, regarding their emotions, engagement, relationships, meaning, and achievement in bubble training. This may provide insights to the government, educational institutions, and athletic associations on possible comprehensive guidelines if they plan to implement bubble training when the need arises.

The influence of psychological readiness of athletes when returning to sport after injury

Background: Injuries are a common occurrence in sports participation; however, they have the potential to be accompanied by negative thoughts and feelings, which may play a part in the athletes' state of mind when they return to their sport. Assessing the degree to which this occurs provides an opportunity to evaluate and address athletes' state of mind before their return to play. Objectives: To determine if athletes are psychologically ready to return to play after an injury and if there are differences in fear avoidance behaviour between those who were and were not ready to return. Methods: Eighty-eight athletes participated in this descriptive survey. Athletes' confidence to return to play was measured by the Injury-Psychological Readiness to Return to Play (I-PRRS) questionnaire and their fear avoidance was measured by the Athlete Fear Avoidance Questionnaire (AFAQ). Results: Fifty injured athletes with a mean age of 23.3±4.0 years old responded to the I-PRRS and the AFAQ questionnaires. The average I-PRRS score was 46.5±9.1 AU. The evidence suggests that 60% of the athletes were not ready to return to sport (41.0±7.5 AU), whereas 40% were ready to return (54.8±3.1 AU). The difference in scores was not significant. The relationship between the AFAQ scores and the I-PRRS score for the 'ready' and 'not ready' groups was not significant (p=0.066). The mean AFAQ score (26.1±8.6 AU) for the 'not ready' group is marginally greater than the mean AFAQ score (21.6±7.5 AU) for the 'ready' group. There was a negative correlation between psychological readiness to return to sport and athletic fear avoidance (r =-0.508, p<0.001). Conclusion: There needs to be a greater utilisation of psychological assessment tools like the Injury-Psychological Readiness to Return to Play (I-PRRS) questionnaire, which can assist the athlete's support team, who can help identify athletes who are apprehensive about returning to sport after injury.

Epidemiology of Knee Injuries in Baseball Players from the State of São Paulo / Epidemiologia das lesões do joelho em atletas de beisebol do estado de São Paulo

Abstract Objective This study aimed to identify the main knee complaints and injuries associated with baseball and their prevalence in the state of São Paulo, Brazil. Methods This epidemiological study analyzed data from an online questionnaire sent to baseball athletes from the state of São Paulo, Brazil, from 2019 to 2022. Results Ninety-eight athletes participated in the study. Their average age was 24.3 years, and 85.72% of the subjects were men. The most prevalent ethnicities were yellow (50%) and white (42.86%). Most athletes had incomplete or complete higher education (75.5%). Most (88.77%) have been training for over 1 year, and 40.82% played in more than 1 position. More than half also practiced another sport. Most (66.32%) athletes present knee complaints or symptoms, and 37.75% had suffered a knee injury playing baseball, with several mechanisms (contact with the ground, contact with another player, or no contact). More than half (59.45%) of the athletes required time away from baseball due to complaints, symptoms, or injuries. Conclusion Among the athletes interviewed, 66.32% had a knee complaint, and 37.75% had already had a knee injury, especially meniscal and ligament injuries. The injury rate was highest in the first year of practice.

Resumo Objetivo Identificar as principais queixas e lesões de joelho associadas ao beisebol, e sua prevalência em atletas de beisebol no estado de São Paulo. Métodos Estudo epidemiológico desenvolvido por meio da análise de dados obtidos por um questionário online, entre os anos de 2019 e 2022, distribuído entre atletas de beisebol do estado de São Paulo. Resultados Noventa e oito atletas participaram do estudo, com média de 24,3 anos de idade, sendo que 85,72% eram homens. As etnias mais prevalentes foram os amarelos (50%) e brancos (42,86%), e a maioria dos atletas possuía ensino superior incompleto ou completo (75,5%). Um total de 88,77% treinava há mais de 1 ano e 40,82% atuavam em mais de uma posição. Mais da metade praticava simultaneamente outro esporte. Um total de 66,32% dos atletas apresentava queixas ou sintomas no joelho e 37,75% já haviam sofrido alguma lesão no joelho associada à prática do beisebol através de diversos mecanismos (contato com solo, contato com outro jogador, sem contato). Um total de 59,45% dos atletas precisou ser afastado da prática devido às queixas, sintomas ou lesões apresentadas. Conclusão Dos atletas entrevistados, 66,32% apresentaram alguma queixa no joelho e 37,75% já tiveram alguma lesão diagnosticada nessa articulação, sendo as mais prevalentes as lesões meniscais e as ligamentares. A taxa de lesões foi maior no primeiro ano de prática.

Spondylolysis and Spondylolisthesis in Athletes / Espondilólise e espondilolistese em atletas

Abstract This article is an update on spondylolysis and spondylolisthesis in athletes, from diagnosis to treatment, based on our service experience and a literature review.

Resumo Este artigo é uma atualização do tema espondilólise e espondilolistese em atletas, do diagnóstico ao tratamento, baseando-se na experiência dos nossos serviços juntamente com uma revisão da literatura.

Knee Laxities Changes with Sex-steroids throughout the Menstrual Cycle Phases in Athlete and Non-athlete Females / Mudanças na flacidez do joelho com esteroides sexuais durante as fases do ciclo menstrual em mulheres atletas e não atletas

Abstract Objective: Our study investigated changes of knee laxities in athletes and non-athletes females and relationship between knee laxity and sex-steroid at menstrual cycle phases. Methods: Forty six healthy females, twenty four athletes and twenty two non-athletes not on hormone contraceptive pills, had no previous knee injuries and with regular menstrual cycles for 3 consecutive months, participated in the study. Medial and lateral knee laxities were determined by varus-valgus tests at follicular, ovulatory and luteal phases. Serum level of relaxin, estrogen, progesterone and testosterone were determined by ELISA and radioimmunoassay. Results: Knee laxities in athletes and non-athletes at 0° and 20° flexion were the highest in luteal phase with non-athletes possess greater laxity than athletes. Positive correlation between progesterone and relaxin levels with knee laxities were observed. Meanwhile, the levels of both hormones were highest in the luteal phase. Conclusion: Increased medial and lateral knee laxities in athletes and non-athletes associated with high serum progesterone and relaxin levels in luteal phase may contribute toward increased risk of non-contact knee injury. However, lower knee laxity in athletes than non-athletes suggest that exercise could be a protective factor.

Resumo Objetivo: Nosso estudo investigou alterações na lassidão do joelho em atletas e não atletas do sexo feminino e a relação entre a lassidão do joelho e esteroides sexuais nas fases do ciclo menstrual. Métodos: Quarenta e seis mulheres saudáveis, vinte e quatro atletas e vinte e duas não atletas, sem uso de pílulas anticoncepcionais hormonais, sem lesões anteriores no joelho e com ciclos menstruais regulares por 3 meses consecutivos, participaram do estudo. A lassidão medial e lateral do joelho foi determinada por testes de varo-valgo nas fases folicular, ovulatória e lútea. Os níveis séricos de relaxina, estrógeno, progesterona e testosterona foram determinados por ensaio imunoenzi mático (ELISA) e radioimunoensaio. Resultados: A lassidão do joelho em atletas e não atletas em 0° e 20° de flexão foi maior na fase lútea; as não atletas apresentavam maior lassidão do que as atletas. Houve uma correlação positiva entre os níveis de progesterona e relaxina e a lassidão do joelho. Além disso, os níveis desses dois hormônios foram maiores na fase lútea. Conclusão: O aumento da lassidão medial e lateral do joelho em atletas e não atletas, associado a altos níveis séricos de progesterona e relaxina na fase lútea, pode contribuir para o aumento do risco de lesão sem contato no joelho. No entanto, a menor lassidão do joelho em atletas do que em não atletas sugere que o exercício pode ser um fator protetor.

Análisis de combates femeninos de taekwondo durantelos Juegos Olímpicos de París 2024 / Análise das lutas femininas de taekwondo durante os Jogos Olímpicos de Paris 2024 / Analysis of femaletaekwondo matches during Paris 2024 Olympic Games

Objetivo: Analizar la fase activa de combates durante las semifinales y finales de los Juegos Olímpicos de París 2024. Método: Se examinaron doce combates de las categorías femeninas (≤49 kg, ≤57 kg, ≤67 kg y ≥67 kg) utilizando la técnica de análisis de vídeo con el software Kinovea 2023.1.2. Se registraron la frecuencia y duración de los enfrentamientos, identificando los elementos estructurales del combate: tiempo de intercambio (TI), tiempo latente (TL), espacio de interacción (EI) y distancia de enfrentamiento (DE). Además, se identificaron las técnicas efectivas como elemento funcional del combate, así como la cantidad de acciones técnicas realizadas durante los EI. Resultados: En general, las deportistas realizaron esfuerzos de alta intensidad de manera intercalada, con una ratiode~1,4:1 a favor del TI, distribuidos en 48 espacios por asalto entre EI y DE. Se registraron 69 técnicas efectivas y un total de 729 técnicas ejecutadas durante los EI. Conclusiones: Las deportistas mostraron una predominancia del TI en relación con los esfuerzos. La técnica gulleo chagise destacó como la más efectiva, y la categoría ≤67 kg fue identificada como la más eficaz. En promedio, las deportistas realizaron 3 acciones técnicas por EI. En la práctica, los entrenadores podrían desarrollar entrenamientos intermitentes de alta intensidad utilizando las estructuras del presente estudio como guía.

Objetivo: Analisar a fase ativa dos combates durante as semifinais e finais dos Jogos Olímpicos de Paris 2024. Método: Foram examinados doze combates das categorias femininas (≤49 kg, ≤57 kg, ≤67 kg e ≥67 kg) utilizando a técnica de análise de vídeo com o software Kinovea 2023.1.2. A frequência e a duração dos combates foram registradas, identificando os elementos estruturais do combate: tempo de troca (TT), tempo latente (TL), espaço de interação (EI) e distância de enfrentamento (DE). Além disso, foram identificadas as técnicas eficazes como elemento funcional do combate, bem como o número de ações técnicas realizadas durante os Eis. Resultados: De maneira geral, as atletas realizaram esforços de alta intensidade de forma intercalada, com uma razão de ~1,4:1 a favor do TT, distribuídos em 48 espaços por round entre EI e DE. Foram registradas 69 técnicas eficazes e um total de 729 técnicas executadas durante os EIs. Conclusões: As atletas apresentaram uma predominância do TT em relação aos esforços. A técnica gulleo chagi destacou-se como a mais eficaz, e a categoria ≤67 kg foi identificada como a mais eficiente. Em média, as atletas realizaram 3 ações técnicas por EI. Na prática, os treinadores podem desenvolver treinos intermitentes de alta intensidade utilizando asestruturas deste estudo como guia

Objective: To analyse the active phase of female matches during the semifinals and finals of the Paris 2024 Olympic Games.Method:Twelve matches in the female categories (≤49 kg, ≤57 kg, ≤67 kg, and ≥67 kg) were subjected to video analysis using the software Kinovea 2023.1.2. The frequency and duration of the matches were recorded, identifying the structural elements of the combat: exchange time (TI), latent time (LT), interaction space (EI), and engagement distance (DE). Furthermore, effective techniques were identified as a functional element of the combat, as well as the number of technical actions performed during the EI. Results: Overall, the athletes performed high-intensity efforts in an alternating manner, with a ratio of ~1.4:1 in favour of TI, distributed over 48 spaces per round between EIand DE. A total of 69 effective techniques were recorded, with 729 total techniques executed during the EI. Conclusions: The athletes showed a predominance of TIin relation to efforts. The gulleo chagi technique stood out as the most effective, and the ≤67 kg category was identified as the most efficient. On average, athletes performed 3 technical actions per EI. In practice, coaches could develop high-intensity intermittent training using the structures from this study as a guide.

Burnout em Atletas de Futebol Sub-20 / Burnout in Under-20 Soccer Athletes / Burnout en Deportistas de Fútbol Sub-20

Objetivo: Identificar a prevalência de síndrome de burnout e comparar a percepção da síndrome pré e pós-temporada em atletas sub-20 de futebol de campo. Metodologia: Participaram do estudo 48 atletas do sexo masculino de 5 clubes profissionais, com média de idade de 18,5 ± 0,7 anos. Para a coleta de dados utilizou-se uma ficha sociodemográfica e o Questionário de Burnout para Atletas (QBA). Para as médias das dimensões e burnout total foi utilizada a estatística descritiva. A normalidade dos dados foi considerada não-paramétrica por meio do teste de Shapiro-Wilk. Em seguida foi utilizado o teste de Wilcoxon para avaliar possíveis diferenças de sentimentos de burnout pré e pós-temporada. O nível de significância adotado foi p< 0,05. O tamanho de efeito foi medido pelo teste d de Cohen. Resultados e Discussão: Não foram encontradas diferenças significativas nas variações de sentimentos de burnout total e por dimensões antes e após a temporada (p>0,05) e o tamanho de efeito das comparações foi considerado pequeno (Cohen d < 0, 30). Conclusão: Os atletas apresentaram baixa prevalência de síndrome de burnout, tanto no início quanto no final da temporada. Quanto à percepção das dimensões de burnout, os atletas não apresentaram altos níveis, o que pode sinalizar que os atletas conseguem lidar de maneira adaptativa com as demandas tanto no âmbito esportivo como pessoal

Objective: To identify the prevalence of burnout syndrome and compare the perception of the syndrome before and after the season in under-20 field soccer athletes. Methodology: The study involved 48 male athletes from 5 professional clubs, with an average age of 18.46 ± 0.69 years. Data collection included a sociodemographic form and the Athlete Burnout Questionnaire (ABQ). Descriptive statistics were used for means of dimensions and total burnout. Data normality was considered non-parametric using the Shapiro-Wilk test. Subsequently, the Wilcoxon test was employed to assess potential differences in burnout feelings before and after the season. The adopted significance level was p < 0.05. Effect size was measured by Cohen's d test. Results and discussion: No significant differences were found in variations of total burnout feelings and by dimensions before and after the season (p > 0.05), and the effect size of the comparisons was considered small (Cohen d < 0.30). Conclusion: Athletes displayed a low prevalence of burnout syndrome, both at the beginning and end of the season. Regarding the perception of burnout dimensions, athletes did not exhibit high levels, which may indicate that athletes can adaptively cope with demands in both the sports and personal spheres.

Objetivo: Identificar la prevalencia del síndrome de burnout y comparar la percepción del síndrome antes y después de la temporada en deportistas de fútbol sub-20. Metodología: Participaron en el estudio 48 atletas masculinos de 5 clubes profesionales, con una edad promedio de 18.46 ± 0.69 años. Para la recopilación de datos, se utilizó un cuestionario sociodemográfico y el Questionário de Burnout para Atletas (QBA). Para las medias de las dimensiones y el burnout total se utilizó la estadística descriptiva. La normalidad de los datos se consideró no paramétrica a través de la prueba de Shapiro-Wilk. Luego se utilizó la prueba de Wilcoxon para evaluar posibles diferencias en los sentimientos de burnout antes y después de la temporada. El nivel de significancia adoptado fue p < 0,05. El tamaño del efecto se midió mediante la prueba d de Cohen. Resultados y discusión: No se encontraron diferencias significativas en las variaciones de los sentimientos de burnout total y por dimensiones antes y después de la temporada (p > 0,05), y el tamaño del efecto de las comparaciones se consideró pequeño (Cohen d < 0,30). Conclusión: Los deportistas mostraron una baja prevalencia del síndrome de burnout, tanto al comienzo como al final de la temporada. En cuanto a la percepción de las dimensiones de burnout, los deportistas no presentaron niveles altos, lo que podría indicar que los deportistas pueden enfrentar de manera adaptativa las demandas tanto en el ámbito deportivo como en el personal.

O efeito de 12 semanas de aulas de ballet sobre a potência de bailarinas amadoras / The effect of 12 weeks of ballet classes on the power of amateur dancers

RESUMO Os grandes saltos são passos que exigem potência muscular e coordenação motora. Visto que há uma escassez na literatura sobre o aprendizado e treinamento destes passos, o objetivo deste estudo foi verificar o efeito de doze semanas de aulas de ballet clássico com o exercício de grand allegro sobre a potência de membros inferiores em bailarinas amadoras. Participaram sete bailarinas, com 11,33±1,02 anos de idade, que cursavam o Grade 3 da Royal Academy of Dance. Foram realizados cálculos de Pico de Velocidade de Crescimento, testes de salto vertical e avaliação técnica do grand allegro em quatro momentos durante doze semanas. Os planos de aula, Percepção Subjetiva de Esforço e Qualidade Total de Recuperação de cada aula foram analisadas. Os principais resultados apontam bailarinas pré-púberes, cuja potência muscular e técnica do exercício de grand allegro apresentaram melhora (p<0,05). A carga semanal e quantidade de saltos e de exercícios executados variaram durante o período, enquanto que a Qualidade Total de Recuperação se mostrou estável. Os dados obtidos apontam para as variações da carga de trabalho nas aulas de ballet somadas à fase sensível do desenvolvimento e coordenação motora como os responsáveis pela evolução na potência muscular e na qualidade técnica.

ABSTRACT The big jumps are steps that require muscular power and motor coordination. Since there is a lack in the literature on the learning and training of these steps, the aim of this study was to verify the effect of 12 weeks of classical ballet classes with the grand allegro exercise on lower limb power in amateur ballerinas. Seven dancers, aged 11.33±1.02 years, who were studying Grade 3 of Royal Academy of Dance, participated Height Growth Speed Peak calculations, vertical jump tests, and technical evaluation of the grand allegro exercise were performed at four moments over the 12-week study period. Lesson plans, the Rating of Perceived Exertion, and the Total Recovery Quality for each class were collected to analyze load and recovery. The main results indicate that the dancers were prepubertal and lower limb muscular power and the technique of the grand allegro exercise improved (p<0.05). Weekly load and the quantity of jumps and exercises performed varied during the period, while Total Recovery Quality remained stable. The obtained data point to variations in the workload during ballet classes, combined with the sensitive phase of development and motor coordination, as responsible for the improvement in muscular power and technical quality.

Cardio-Physiological and Anthropometric Profile of Elite International Handball Players from Top Ranking Macedonian Teams / Perfil Cardiofisiológico y Antropométrico de Jugadores Internacionales de Balonmano de Élite de Equipos Macedonios de Primer Nivel

SUMMARY: Monitoring of body composition and cardiophysiological parameters are main part of the general health status of handball players and significant indicators of their physical fitness. The assessment of body components, especially skeletal muscle mass and body fat mass are important because of their influence on sport performance. The aim of this study is to determine the body composition and cardiophysiological characteristics of elite handball players from Republic of North Macedonia. 27 male HB players from two top ranking teams from RNM were tested ergometrically with Bruce protocol for determination of maximal oxygen consumption; body analysis was made with bioelectrical impedance analyzer, InBody 720. Anthropometric parameters were as follows: mean height was 190.4±7.8 cm and weight 96.3±15.5 kg, skeletal muscle mass (SMM)=47.11±6.69 kg; BMI=26.38±3.1; BF%=15.04±6.01 and WHR=0.9±1.8. The result of ergometrical test produce mean VO2 max=43.92 ml/kg/min which is 100.46 % of reference value. The body composition of elite international handball players from the top handball teams in Republic of North Macedonia showed similar body components as other European handball players. The obesity diagnose parameters were negatively associated with exercise time and maximal oxygen consumption.

El seguimiento de la composición corporal y los parámetros cardiofisiológicos son una parte principal del estado de salud general de los jugadores de balonmano y son indicadores importantes de su condición física. La evaluación de los componentes corporales, especialmente la masa muscular esquelética y la masa grasa corporal, son importantes debido a su influencia en el rendimiento deportivo. El objetivo de este estudio fue determinar la composición corporal y las características cardiofisiológicas de jugadores de balonmano de élite de la República de Macedonia del Norte. Se evaluaron 27 jugadores masculinos de HB de dos equipos de primer nivel de RNM ergométricamente con el protocolo de Bruce para determinar el consumo máximo de oxígeno; el análisis corporal se realizó con el analizador de impedancia bioeléctrica InBody 720. Los parámetros antropométricos fueron los siguientes: talla media 190,4±7,8 cm y peso 96,3±15,5 kg, masa músculo esquelética (SMM)=47,11±6,69 kg; IMC=26,38±3,1; %GC=15,04±6,01 y RCC=0,9±1,8. El resultado de la prueba ergométrica produce un VO2 máximo medio = 43,92 ml/kg/ min, que es el 100,46 % del valor de referencia. La composición corporal de los jugadores de balonmano internacionales de élite de los mejores equipos de balonmano de la República de Macedonia del Norte mostró componentes corporales similares a los de otros jugadores de balonmano europeos. Los parámetros diagnósticos de obesidad se asociaron negativamente con el tiempo de ejercicio y el consumo máximo de oxígeno.

Dermatoglyphic Profiles of Competitive Athletes: CrossFit and Ultra-Marathon / Perfiles Dermatoglíficos de Deportistas Competitivos: CrossFit y Ultramaratón

SUMMARY: In the sports field, sports are usually classified according to the predominance of the energy system used during the competition; sports like Crossfit and ultra-marathon could be totally opposite due to the needs of athletes to achieve good places. Due to the above, the objective was established to compare the dermatoglyphic profiles of CrossFit and Ultra-marathon athletes according to the predisposition of the energy systems, aerobic and anaerobic, used in the competitions. Cross-sectional descriptive study, where the dermatoglyphic profile of 21 athletes of national presence (10 crossfit and 11 ultra-marathon runners) was determined, through the Computerized Dermatoglyphic System, brand Salus Dermatoglifia, according to the Cummins and Midlo protocol, which consists of taking the fingerprints of the 10 fingers of the hands. The fingerprint designs of the human being (arch, loop and whorl) and the elements contained in them (nucleus and delta) were analyzed, differences were established through the Analysis of Variance test in the SPSS V.25 statistical package. The results show significant differences between the average scores of the line count of both disciplines (108 and 165), being higher in ultra-marathon runners, associated with greater aerobic resistance. Another significant and relevant finding was the presence of arch-type fingerprints only in CrossFit athletes associated, along with low line count, with strength and power. It is concluded that Crossfit and Ultra-marathon athletes have dissimilar natural physical characteristics, which is why they participate and excel in different sports where they have enhanced their natural physical abilities through training.

En el ámbito deportivo, los deportes suelen clasificarse según el predominio del sistema energético utilizado durante la competición; Deportes como el Crossfit y la ultramaratón podrían ser totalmente opuestos debido a las necesidades de los deportistas de conseguir buenos lugares. Debido a lo anterior, se estableció como objetivo comparar los perfiles dermatoglíficos de atletas de CrossFit y Ultramaratón según la predisposición de los sistemas energéticos, aeróbico y anaeróbico, utilizados en las competencias. Estudio descriptivo transversal, donde se determinó el perfil dermatoglífico de 21 deportistas de presencia nacional (10 crossfit y 11 ultramaratonistas), a través del Sistema Dermatoglífico Computarizado, marca Salus Dermatoglifia, según el protocolo Cummins y Midlo, el cual consta de tomando las huellas dactilares de los 10 dedos de las manos. Se analizaron los diseños dactilares del ser humano (arco, asa y verticilo) y los elementos contenidos en ellos (núcleo y delta), se establecieron diferencias mediante la prueba de Análisis de Varianza en el paquete estadístico SPSS V.25. Los resultados muestran diferencias significativas entre las puntuaciones medias del recuento de líneas de ambas disciplinas (108 y 165), siendo superiores en los corredores de ultramaratón, asociado a una mayor resistencia aeróbica. Otro hallazgo significativo y relevante fue la presencia de huellas dactilares tipo arco sólo en atletas de CrossFit asociadas, junto con un bajo número de líneas, con fuerza y potencia. Se concluye que los atletas de Crossfit y Ultramaratón tienen características físicas naturales disímiles, por lo que participan y destacan en diferentes deportes donde han potenciado sus capacidades físicas naturales a través del entrenamiento.

Factor de crecimiento análogo a insulina-1 y cardiotrofina-1 inducido por ejercicio y su relación con hipertrofia miocárdica en maratonistas / Cardiotrophin-1 and Insulin like growth factor induced by exercise are associated to cardiac hypertrophy in marathon runners

Antecedentes: El ejercicio de alta intensidad induce hipertrofia miocárdica necesaria para adaptar al corazón a la mayor demanda de trabajo. Se desconoce si correr una maratón induce de forma aguda factores humorales asociados al desarrollo de hipertrofia miocárdica en atletas. Objetivo: Evaluar cardiotrofina-1 (CT1) y el factor de crecimiento análogo a insulina-1 (IGF-1), conocidos inductores de hipertrofia, en maratonistas previo y justo después de correr una maratón y su relación con hipertrofia cardíaca. Métodos: Estudio prospectivo ciego simple de atletas hombres que corrieron la maratón de Santiago. Se incluyó un grupo control sedentario. En todos los sujetos se realizó un ecocardiograma transtorácico estándar. Los niveles de CT1 e IGF-1 se determinaron en plasma obtenidos antes (basal) y justo después de haber terminado (antes de 15 minutos) la maratón, usando test de ELISA. Resultados: Los atletas tenían frecuencias cardíacas menores que los controles, asociado con una mayor hipertrofia miocárdica, determinado por el grosor del septo y pared posterior del corazón, y volúmenes del ventrículo y aurícula izquierda. Los niveles basales de CT1 e IGF-1 fueron similares entre atletas y controles sedentarios. El correr la maratón aumentó los niveles de estas dos hormonas en un subgrupo de atletas. Solo los atletas que incrementaron los niveles de IGF-1, pero no de CT1, tenían volúmenes de ventrículo izquierdo y derecho más grandes que los otros atletas. Conclusiones: IGF-1 que se incrementa de forma aguda por el ejercicio, pero no CT1, estaría asociado con el aumento de los volúmenes ventriculares observado en los atletas.

Background: High intensity exercise induces the development of myocardial hypertrophy necessary to adapt the heart to the increased work demand. Whether running a marathon is associated with acutely induced humoral factors responsible for the development of myocardial hypertrophy observed in athletes is not known. Objective: To evaluate the levels of cardiotrophin-1 (CT1) and insulin-like growth factor-1 (IGF-1), known hypertrophy inducers, in marathon runners before and just after running a marathon and their relationship with cardiac hypertrophy. Methodology: Single-blind prospective study of male athletes who ran the Santiago's marathon. A sedentary control group was included. All subjects underwent a standard transthoracic echocardiogram. CT1 and IGF-1 levels were determined in plasma obtained before (basal) and just after finishing (within 15 min) the marathon using ELISA assays. Results: Athletes had lower heart rates than controls, associated with greater myocardial hypertrophy, as determined by thickness of the heart's septum and posterior wall, and left atrial and ventricular volumes. Basal CT1 and IGF-1 levels were similar between athletes and sedentary controls. Marathon running increased the levels of these two hormones in a subgroup of athletes. Only the athletes who increased IGF-1 levels, but not CT1, had larger left and right ventricular volumes. Conclusion: IGF-1 acutely increased by exercise, but not CT1, was associated with the augmented ventricular volumes observed in athletes.

"Ajuda a Não Ficar Louco": Estudo Qualitativo Sobre a Prática de Esportes na Integração Acadêmica / "It Helps Not to Go Crazy": Qualitative Study on the practice of Sports in Academic Integration / "Ayuda a No Volverse Loco": Estudio Cualitativo Sobre la Práctica Deportiva en la Integración Académica

A prática de esportes é associada à formação acadêmica em diversos países, como forma de promover saúde e desenvolver competências pessoais e sociais. Este estudo buscou compreender como os universitários brasileiros percebem a influência das práticas esportivas no seu processo de integração à universidade e em seu desempenho acadêmico. Participaram 260 universitários, provenientes de um grupo maior de participantes de um estudo quantitativo, realizado online, que também apresentava perguntas abertas. As respostas a essas perguntas foram submetidas a uma análise temática. Os estudantes descrevem diferentes formas como a prática de esportes pode contribuir para a obtenção de uma melhor adaptação e desempenho acadêmico (integração e reconhecimento social, manejo do estresse e aprendizagem de competências transversais). Também foram enumeradas dificuldades para conciliar as atividades acadêmicas e esportivas (falta de tempo, incompatibilidade de calendários, cansaço associado à prática esportiva). A partir desses relatos, conclui-se que ainda são necessárias maiores medidas institucionais que estimulem a prática de esportes no ensino superior e que facilitem a sua conciliação com as atividades acadêmicas.

The practice of sports is associated with academic studies in several countries, as a way to promote health and develop personal and social skills. This study aimed to comprehend how brazilian college students perceive the influence of sports practices on their integration process at university and on their academic performance. Participants were 260 college students, from a larger group of participants in a quantitative online study, which also had open-ended questions. The answers to these questions were subjected to a thematic analysis. Students describe different ways in which sports can contribute to a better academic performance and integration (social integration and recognition, stress management and learning soft skills). Difficulties to concile academic and sports activities (lack of time, schedule incompatibility, fatigue associated with sports practice) were also listed. Based on these reports, it is concluded that greater institutional measures are still needed to encourage the practice of sports in higher education and to facilitate its conciliation with academic activities.

La práctica del deporte está asociada a la formación académica en varios países, como una forma de promover la salud y desarrollar habilidades personales y sociales. Este estudio buscó comprender cómo los universitarios brasileños perciben la influencia de las prácticas deportivas en su proceso de integración universitaria y en su rendimiento académico. Participaron 260 universitarios, provenientes de un grupo más amplio de participantes en un estudio cuantitativo, realizado online, que también tenía preguntas abiertas. Las respuestas a estas preguntas fueron sometidas a un análisis temático. Los estudiantes describen diferentes formas en las que el deporte puede contribuir a una mejor adaptación y rendimiento académico (integración y reconocimiento social, manejo del estrés y aprendizaje de habilidades transversales). También se enumeraron las dificultades para conciliar las actividades académicas y deportivas (falta de tiempo, incompatibilidad de horarios, cansancio asociado al deporte). De estos informes se concluye que aún son necesarias mayores medidas institucionales para fomentar la práctica del deporte en la educación superior y facilitar su conciliación con las actividades académicas.

Condutas cinesioterapêuticas no tratamento das tendinopatias do manguito rotador em atletas de voleibol de quadra / Kinesiotherapeutic conducts in the treatment of rotator cuff tendinopathies in indoor volleyball athletes

Introdução: o ombro do jogador de voleibol é suscetível a lesões resultantes de sobrecargas biomecânicas e movimentos repetitivos. As frequentes queixas de dor nessa articulação evidenciam o elevado volume de ações motoras unilaterais em alta velocidade acima da cabeça, atingindo o manguito rotador (MR) e gerando limitação funcional na prática desportiva. As tendinopatias do MR, formado pelos músculos subescapular, redondo menor, infraespinhal e supraespinhal, atingem comumente os tendões do supraespinhal e do infraespinhal. Objetivo: descrever as condutas cinesioterapêuticas utilizadas no tratamento das tendinopatias do MR em atletas de voleibol de quadra. Metodologia: pesquisaram-se as bases de dados MEDLINE, SciELO e BVS. Descritores: lesões do ombro, manguito rotador, atletas, voleibol e Terapia por Exercício (pesquisados em inglês), associados dois a dois ou três a três, dentre os quais o termo atletas ou voleibol sempre foi mantido. Foram incluídos artigos de revisão, artigos originais, ensaios clínicos e estudos de coorte publicados em português e inglês, entre os anos de 2009 e 2019. Resultados: inicialmente a busca resultou em 480 artigos. Após o processo de seleção, seis estudos foram revisados na íntegra e incluídos na síntese qualitativa. Conclusão: as principais condutas cinesioterapêuticas descritas foram: fortalecimento dos rotadores externos, dos músculos do tronco, da coluna e periescapulares, alongamento da região posterior do ombro e mobilizações articulares.

Introduction: the volleyball player's shoulder is susceptible to injuries resulting from biomechanical overloads and repetitive movements. The frequent complaints of pain in this joint highlight the high volume of unilateral motor actions at high speed above the head, reaching the rotator cuff (RC) and generating functional limitation in sports. RC tendinopathies, formed by the subscapularis, teres minor, infraspinatus and supraspinatus muscles, commonly affect the supraspinatus and infraspinatus tendons. Objective: to describe the kinesiotherapeutic conducts used in the treatment of RC tendinopathies in indoor volleyball athletes. Methodology: MEDLINE, SciELO and VHL databases were searched. Descriptors: shoulder injuries, rotator cuff, athletes, volleyball and Exercise Therapy (searched in English), associated two by two or three by three, among which the term athletes or volleyball was always maintained. Review articles, original articles, clinical trials and cohort studies published in Portuguese and English between 2009 and 2019 were included. Results: initially the search resulted in 480 articles. After the selection process, six studies were fully reviewed and included in the qualitative synthesis. Conclusion: the main kinesiotherapeutic procedures described were strengthening of the external rotators, trunk, spine and periscapular muscles, stretching of the posterior region of the shoulder and joint mobilizations.

Análisis de la condición física, composición corporal y somatotipo en deportistas colombianos / Analysis of the physical condition, body composition and somatotype in colombian athletes / Análise da condição física, composição corporal e somatotipo em atletas colombianos

El objetivo del estudio fue determinar la condición física, composición corporal y el somatotipo en deportistas colombianos. Participaron 618 deportistas (Mujeres 25,89%), con edad de 14 a 22 años. Se tomaron medidas cinantropométricas y se realizaron pruebas de resistencia cardiovascular en tapiz rodante, salto squat jump y contramovimiento, flexibilidad sit and reach y abdominales en 1min. Los deportistas del grupo de deportes de marca y precisión obtuvieron el porcentaje de grasa y porcentaje de masa ósea más altos, mientras el grupo de deportes de combate fue el índice de masa corporal, la capacidad aeróbica, la fuerza de resistencia abdominal y los saltos; en el grupo de deportes de pelota fue el porcentaje de recuperación, y en el grupo de tiempo y marca, sobresalió el porcentaje de masa muscular y la flexibilidad. El somatotipo predominante fue mesomórfico. Los resultados más altos en cada variable dependieron de la disciplina deportiva practicada.

The objective of this study was to determine the physical condition, body composition, and somatotype in Colombian athletes. 618 athletes participated (Women 25.89%), from 14 to 22 years old. Cynanthropometric measurements were taken, and cardiovascular endurance tests were performed on treadmill, as well as squat jumps and counter movements, the sit and reach flexibility test and the amount of sit ups in 1 min. The athletes in the brand and precision sports group had the highest percentage of fat and bone mass, while the combat sports group had the highest body mass index, aerobic capacity, abdominal resistance strength, and jumping; in the ball sports group the highest percentage was the recovery time; and in the time and brand group, the percentage of muscle mass and flexibility stood out. The predominant somatotype was mesomorphic. The highest results in each variable depended on the sports discipline they practiced.

O objetivo do estudo foi determinar a condição física, composição corporal e somatotipo em atletas colombianos. Participaram 618 atletas (Mulheres 25,89%), com idades entre 14 e 22 anos. Vinte medidas cineantropométricas foram realizadas e testes de resistência cardiovascular foram realizados em esteira, agachamento salto e contramovimento, sentar e alcançar flexibilidade e abdominais em 1 min. Atletas do grupo de esportes de marca e de precisão tiveram o maior percentual de gordura e massa óssea, enquanto o grupo de esportes de combate apresentou o maior índice de massa corporal, capacidade aeróbica, força de resistência abdominal e saltos; no grupo de esportes com bola foi o percentual de recuperação, e no grupo tempo e marca, o percentual de massa muscular e flexibilidade se destacaram. O somatotipo predominante foi o mesomórfico. Os maiores resultados em cada variável dependeram do esporte praticado.

Efectos de la edad relativa en selecciones femeninas de Colombia: caso juegos bolivarianos 2022 / Relative age effects in Colombian women's teams: 2022 bolivarian games case / Efeitos da idade relativa nas equipes femininas colombianas: caso dos jogos bolivarianos 2022

Los efectos relativos de la edad (RAE) se refieren a aquellas (des)ventajas y resultados que proceden fundamentalmente de una interacción entre la fecha de nacimiento y las fechas utilizadas para organizar logísticamente a los participantes. Los RAE prevalecen constantemente en contextos deportivos femeninos, con un 25 % más de participantes relativamente mayores (Q1) que participantes relativamente más jóvenes (Q4). Nuestro objetivo fue identificar los RAE en las selecciones Colombia femeninas participantes en los últimos juegos Bolivarianos [JB] (Organización Deportiva Bolivariana [ODEBO], 2022). Se analizaron un total n = 87 fechas de nacimiento, utilizando la prueba estadística de chi-cuadrada. El análisis nos permitió establecer que no existen los RAE en las selecciones femeninas participantes en los JB (X2 = 12,2; p = 0,836). Estos hallazgos son importantes para el contexto del deporte femenino colombiano y pueden ser tenidos en cuenta por organizaciones, clubes deportivos, así como en lineamientos para la identificación y selección de talentos deportivos.

Relative Age Effects (RAE) refer to those (dis)advantages and outcomes that stem primarily from an interaction between the date of birth and the dates used to logistically organize the participants. RAE is consistently prevalent in female sports contexts, with 25% more relatively older participants (Q1) than relatively younger participants (Q4). Our objective was to identify the RAE in the Colombian women's teams participating in the last Bolivarian Games (JB) (ODEBO, 2022). A total of n = 87 dates of birth were analyzed using the chi-square statistical test. The analysis allowed us to establish that there are no RAE in the female teams participating in JB (X2 = 12,2; p = 0,836). These findings are important in the context of Colombian women's sports and can be considered by organizations, and sports clubs, as well as in guidelines for the identification and Selection of sports talents.

Os Efeitos da Idade Relativa (RAE) referem-se àquelas (des)vantagens e resultados que decorrem principalmente de uma interação entre a data de nascimento e as datas utilizadas para organizar logisticamente os participantes. O EIR é consistentemente prevalente em contextos esportivos femininos, com 25% mais participantes relativamente mais velhos (Q1) do que participantes relativamente mais jovens (Q4). Nosso objetivo foi identificar o RAE nas equipes femininas colombianas participantes dos últimos Jogos Bolivarianos (JB) (ODEBO, 2022). Um total de n = 87 datas de nascimento foram analisadas pelo teste estatístico do qui-quadrado. A análise permitiu estabelecer que não há EIR nas equipes femininas participantes do JB (X2 = 12,2; p = 0,836). Esses achados são importantes para o contexto do esporte feminino colombiano e podem ser levados em consideração pelas organizações e clubes esportivos, bem como nas diretrizes para a identificação e seleção de talentos esportivos.

Perfil antropométrico de judocas de elite argentinos / Anthropometric profile of Argentine elite Judokas

Introducción: el judo es un deporte de combate cuya clasificación competitiva depende del peso corporal, lo cual está destinado a promover competencias parejas y equitativas en cuanto a capacidades físicas se refiere. El avance de las ciencias del entrenamiento y de la nutrición deportiva generó una mejora de la composición corporal en los deportistas, redundando en un aumento de los valores de masa muscular y en una disminución de la masa adiposa. El objetivo del estudio fue estimar la composición corporal de las personas que practican Judo participantes del campeonato nacional argentino del año 2021. Materiales y métodos: se realizó un estudio transversal descriptivo a los/as participantes del campeonato nacional de judo del año 2021. Fueron evaluados un total de 183 judocas (51 mujeres y 132 varones), según el protocolo de medición de la ISAK. Para la determinación de la composición corporal se utilizó el método de fraccionamiento anatómico de cinco componentes de Kerry Ross. Resultados: el promedio de las judocas fue de 30,5% para la masa adiposa y de 44,5% para la masa muscular; no se encontraron diferencias estadísticamente significativas en los distintos grupos de edad. Los varones obtuvieron un valor promedio de 22,4% para la masa adiposa y 49,1%para la masa muscular; en este caso se encontraron diferencias significativas entre los distintos grupos de edad, tanto para la masa adiposa como para la muscular y la masa ósea. Discusión: se necesitan más estudios con grupos estratificados en función de la división de peso corporal para poder establecer patrones de referencia específicos para el trabajo en ciencias del ejercicio y la nutrición. Conclusión: la optimización de la composición corporal de las personas que practican Judo redunda positivamente en la mejora de las capacidades físicas específicas. Los datos presentados constituyen una referencia específica de utilidad para la evaluación y seguimiento de las personas que practican Judo. La estratificación por grupos etarios y división de peso corporal permitirá delimitar mejor aún los valores de cada categoría de edad. Se considera relevante vincular la composición corporal con las pruebas físicas y los resultados deportivos, a fin de establecer un mejor perfil del judoca argentino. (AU)

Introduction: judo is a combat sport whose competitive classification depends on body weight, intended to promote even and equitable compe-titions in terms of physical abilities. Advances in the sciences of training and sports nutrition have led to an improvement in the body composition of athletes, resulting in an increase in muscle mass and a decrease in adipose mass. This study aimed to estimate the body composition of judo fighters participating in the 2021 Argentine National Championship. Materials and methods: we conducted a descriptive cross-sectional study of participants of the 2021 national judo championship. We evaluated 183 judokas (51 women and 132 men) applying the ISAK measurement protocol. We used the Kerry Ross five-component fractional anatomic method to determine body composition. Results: the average for female judo players was 30.5% for adipose mass and 44.5% for muscle mass; we found no statistically significant diffe-rences in the different age groups. The average value for males was 22.4% for adipose mass and 49.1% for muscle mass; in this case, we found significant differences between the different age groups for adipose mass and muscle and bone mass. Discussion: there is a need for more studies with stratified groups according to body weight division to establish specific reference standards for the work in exercise science and nutrition. Conclusion: the optimization of the body composition of female and male judo players has a positive effect on the improvement of specific physical capacities. The data presented constitute a relevant reference for the evaluation and follow-up of judokas. The stratification by age groups and body weight division will allow a better delimitation of the values of each age category. Linking body composition with physical tests and results is considered relevant to obtain a better profile of the Argentinian judo player. (AU)

Reference Values and Sensitivity for Different Body Fat Variables Measured by Bioimpedance Method in Female Athletes in Individual Sports: Discriminative and Comparative Study / Valores de Referencia y Sensibilidad para Diferentes Variables de Grasa Corporal Medidas por el Método de Bioimpedancia Eléctrica en Deportistas Femeninas en Deportes Individuales: Estudio Discriminativo y Comparativo

SUMMARY: Athletes differ among themselves and one of the main differences is observed in relation to body shape and composition. Achieving top sports performance requires more standardization in the processes of training and development of a unique methodology for individualizing the control specific adaptation of athletes. The aim of this study is to establish reference data for the most sensitive variables to define the amount and structure of body fat in female athletes in individual sports. The sample included 895 females, divided in: a control group (Cont) of young females (N = 688); International (N = 113), and National level female athletes (N = 94) in 13 individual sports. Four variables described the structureof of body fat: Percentage of body fat (PBF), Body Fat Mass Index (BFMI), Protein Fat Index (PFI) and Index of Body Composition (IBC). Results showed that considering the control group, female athletes have all examined Body Fat variables statistically significantly different (BFMI and PBF are lower, p = 0.011 and p = 0.000, while PFI and IBC are higher, p = 0.000, respectively). Female athletes are also statistically significantly different in relation to the level of competition (p = 0.000), and the investigated variables are responsible for 17.7 % of the variability of the difference between the groups. Competitively more successful female athletes have higher IBC (lower percentage of fat per overall body volume, p = 0.013), as well as, a statistically significantly higher protein mass in relation to body fat mass (PFI, p = 0.018). The most sensitive variables for defining body fat differences between the examined individual sports were IBC, with an influence of 37.9 %, then PFI (32.4 %), then PBF (22.8 %), and finally BFMI, with an influence of 11.4 % on the differences. Based on the results of this study, IBC and PFI are variables that have shown useful scientific-methodological potential for research in the future.

Los deportistas difieren entre sí y una de las principales diferencias se observa en relación a la forma y composición corporal. Alcanzar el máximo rendimiento deportivo requiere una mayor estandarización en los procesos de entrenamiento y en el desarrollo de una metodología única para individualizar el control de adaptación específico de los atletas. El objetivo de este estudio fue establecer datos de referencia de las variables más sensibles para definir la cantidad y estructura de la grasa corporal en mujeres deportistas en deportes individuales. La muestra estuvo compuesta por 895 mujeres, divididas en: un grupo control (Cont) de mujeres jóvenes (N = 688); Atletas femeninas de nivel internacional (N = 113) y nacional (N = 94) en 13 deportes individuales. Cuatro variables describieron la estructura de la grasa corporal: Porcentaje de grasa corporal (PBF), Índice de Masa Grasa Corporal (BFMI), Índice de Proteína Grasa (PFI) e Índice de Composición Corporal (IBC). Los resultados mostraron que, considerando el grupo control, todas las atletas tuvieron diferecias estadísticamente significativas respecto a las variables de grasa corporal (BFMI y PBF son más bajos, p = 0,011 y p = 0,000, mientras que PFI e IBC son más altos, p = 0,000, respectivamente). En relación al nivel de competencia, las atletas femeninas presentan diferencias estadísticamente significativas (p = 0,000), y las variables investigadas son responsables por el 17,7 % de la variabilidad de la diferencia entre los grupos. Las atletas femeninas competitivamente más exitosas tienen un IBC más alto (menor porcentaje de grasa por volumen corporal total, p = 0,013), así como una masa proteica estadísticamente más alta en relación con la masa de grasa corporal (PFI, p = 0,018). Las variables más sensibles para definir las diferencias de grasa corporal entre los deportes individuales examinados fueron IBC, con una influencia del 37,9 %, luego PFI (32,4 %), a seguir PBF (22,8 %) y finalmente BFMI, con una influencia del 11,4 % en las diferencias. En base a los resultados de este estudio, IBC y PFI son las variables que han mostrado un potencial científico-metodológico útil para la investigación en el futuro.