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1.
Curr Sports Med Rep ; 20(10): 520-524, 2021 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-34622816

RESUMO

ABSTRACT: Poor neurocognitive performance has been associated with a greater risk of musculoskeletal injury, and anterior cruciate ligament (ACL) injury prevention protocols include exercises to improve neuromuscular control. Research shows that a concussion elevates the risk for subsequent lower-extremity injury, because concussions lead to lower neurocognitive performance. Studies have been conducted using data within individual male sports, such as football and rugby, or across collegiate sports in aggregate; no study has focused on women's sports. Using 7 years of data collected by athletic training staff at Davidson College, this paper evaluates preconcussive versus postconcussive lower-extremity injury risk across five collegiate women's sports: field hockey, soccer, basketball, volleyball, and lacrosse. Using incidence rate ratios, lacrosse athletes had a five-fold increase in ACL injury risk within 365 d following a concussion. Recognizing that postconcussive ACL tear risk varies across different women's sports is important in informing sport-specific concussion return to play protocols.


Assuntos
Lesões do Ligamento Cruzado Anterior , Traumatismos em Atletas , Concussão Encefálica , Esportes com Raquete/lesões , Lesões do Ligamento Cruzado Anterior/etiologia , Traumatismos em Atletas/complicações , Concussão Encefálica/complicações , Feminino , Humanos , Esportes/classificação , Universidades
2.
PLoS One ; 16(9): e0257124, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34506548

RESUMO

BACKGROUND: Badminton is a highly demanding sport characterized by intermittent efforts with energy being provided by both the aerobic and anaerobic systems. To date, no incremental badminton field test has been developed that can be easily used by badminton coaches that requires accessible material for anyone. OBJECTIVES: The purpose of this study was to develop a practical and reliable easy-to use intermittent endurance badminton test for estimating maximal oxygen uptake (VO2max). METHODS: Thirty six Spanish badminton players (age: 24.1±10.3 years) performed, on different days of the same week, four incremental protocols to exhaustion in randomized order: a treadmill incremental test, a Yo-Yo intermittent recovery level 1 test (Yo-Yo IR1) and twice the Abian intermittent recovery badminton test (AIR-BT). Oxygen uptake was determined with a breath-by-breath gas analyzer during the incremental treadmill test, and performance in the Yo-yo IR1 and AIR-BT was recorded. RESULTS: Significant correlations (p<0.001) for Pearson's product moment coefficient were found between the performance in the AIR-BT and the two non-specific incremental tests (VO2max in the Treadmill Test: r = 0.87, distance in the Yo-Yo IR1: r = 0.86). The regression equation to calculate the VO2max from the AIR-BT time [VO2max = 0.023*(AIR-BT time in seconds)+31.334] showed an adjusted R2 of 0.76 and a SEE of 3.34 ml·kg-1·min-1. There was no significant difference between VO2max obtained by the incremental treadmill test and VO2max calculated using the regression equation (p = 0.644). A paired t-test reported no significant differences between day 1 and day 2 in the AIR-BT time (p = 0.753), the Pearson correlation coefficient between both days was: r = 0.88 (p<0.001) and the intraclass correlation coefficient was 0.875. CONCLUSIONS: The AIR-BT is a valid and reliable on-court test for assessing VO2max in badminton players and may be utilized by coaches and physical trainers for cross-sectional comparison of players and for evaluation of longitudinal changes.


Assuntos
Teste de Esforço , Esportes com Raquete , Feminino , Humanos , Masculino , Consumo de Oxigênio , Análise de Regressão , Adulto Jovem
3.
Acta Biomed ; 92(4): e2021253, 2021 09 02.
Artigo em Inglês | MEDLINE | ID: mdl-34487105

RESUMO

BACKGROUND AND AIM OF THE WORK: Sport participation, regular exercise and physical activity in general exert many benefits on wellness, perceived health related quality of life and social satisfaction. As the people age, physical and mental deterioration occur. Master athletes are older adults that practice different sports, such as running, swimming and badminton. This is a widespread sport practiced by over 200 million people and is one of the most exerted sport in the world. In our study we compared the health perception of Italian Badminton Master athletes and normal Italian population of same age. METHODS: Thirty (22 males, 8 females) Master badminton athletes between 18 and 69 years old participating to 2018 edition of the Italian Master Badminton Championship were enrolled for the study. All athletes compiled a six questions questionnaire, about perceived quality of life, included in the 2014-2017 Italian surveillance database "PASSI" questionnaire and answers were compared to 18-69 y/o Italian population results included in the public database. RESULTS: Statistically significative differences were not detected between genders of master athletes. There was only a significative better psychological perception of quality of life in younger class of master athletes (p<0.05).  A significative better perception was detected in Master athletes compared to normal Italian population. CONCLUSIONS: Aerobic sports, such as badminton, represent positive factors for improving health, psychological wellness and social engagement. Sport has a crucial role for the positive influence on growth in youngers and on the preventive role on typical diseases of older age, such as diabetes, ischemic cardiomyopathy and mental illness.


Assuntos
Qualidade de Vida , Esportes com Raquete , Adolescente , Adulto , Idoso , Atletas , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Percepção , Adulto Jovem
4.
J Athl Train ; 56(7): 750-757, 2021 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-34280267

RESUMO

CONTEXT: Lacrosse is an increasingly popular sport; the number of teams participating in collegiate women's lacrosse has increased by 21.4% in the past 5 years. BACKGROUND: The growth of National Collegiate Athletic Association women's lacrosse, coupled with the ongoing discussions surrounding protective equipment, necessitates further epidemiologic studies in this population. METHODS: Exposure and injury data collected in the National Collegiate Athletic Association Injury Surveillance Program during 2014-2015 through 2018-2019 were analyzed. Injury counts, rates, and proportions were used to describe injury characteristics, and injury rate ratios with 95% CIs were used to examine differential injury rates. RESULTS: The overall injury rate was 4.99 per 1000 athlete exposures. Less than 30% of injuries were time-loss injuries; injuries were most commonly attributed to noncontact (26.6%) and overuse (25.2%) mechanisms. The most commonly reported specific injuries were lateral ligament complex tears (ankle sprains; 9.1%), concussions (7.2%), and hamstring tears (3.8%). SUMMARY: Findings from this study were consistent with the existing epidemiologic evidence in previous studies. Injury incidence in practices, in preseason, and as a result of player contact warrant further attention in this population.


Assuntos
Traumatismos em Atletas , Esportes com Raquete/lesões , Adulto , Atletas/estatística & dados numéricos , Traumatismos em Atletas/classificação , Traumatismos em Atletas/epidemiologia , Traumatismos em Atletas/prevenção & controle , Feminino , Humanos , Incidência , Estados Unidos/epidemiologia
5.
J Athl Train ; 56(7): 758-765, 2021 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-34280286

RESUMO

CONTEXT: The popularity of National Collegiate Athletic Association (NCAA) men's lacrosse has been steadily increasing since the early 1980s. BACKGROUND: Injury surveillance is an important tool to aid in identifying emerging patterns of sport-related injury in NCAA men's lacrosse. METHODS: Injury data collected from a sample of men's lacrosse teams through the NCAA Injury Surveillance Program for the academic years 2014-2015 through 2018-2019 were analyzed. Athlete exposures were estimated and computed based on collected exposure data. Injury counts, rates, and proportions were used to describe injury characteristics, and injury rate ratios (IRRs) with 95% confidence intervals (CIs) were calculated to estimate differences in injury rates. RESULTS: The overall injury rate was 4.90 per 1000 athlete exposures (AEs), and the competition injury rate was higher than the practice injury rate (IRR = 2.59; 95% CI = 2.35, 2.84). The overall preseason injury rate was higher than the regular and postseason injury rates. The most reported injuries were concussions (8.0%), ankle sprains (7.7%), and hamstring tears (6.9%). CONCLUSIONS: Study findings were comparable with existing epidemiological evidence. The overall burden of concussions and lower extremity injuries warrant further attention in this population.


Assuntos
Traumatismos em Atletas , Esportes com Raquete/lesões , Adulto , Atletas/estatística & dados numéricos , Traumatismos em Atletas/classificação , Traumatismos em Atletas/epidemiologia , Traumatismos em Atletas/prevenção & controle , Humanos , Incidência , Masculino , Estados Unidos/epidemiologia
6.
Sensors (Basel) ; 21(13)2021 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-34283127

RESUMO

In sport science, athlete tracking and motion analysis are essential for monitoring and optimizing training programs, with the goal of increasing success in competition and preventing injury. At present, contact-free, camera-based, multi-athlete detection and tracking have become a reality, mainly due to the advances in machine learning regarding computer vision and, specifically, advances in artificial convolutional neural networks (CNN), used for human pose estimation (HPE-CNN) in image sequences. Sport science in general, as well as coaches and athletes in particular, would greatly benefit from HPE-CNN-based tracking, but the sheer amount of HPE-CNNs available, as well as their complexity, pose a hurdle to the adoption of this new technology. It is unclear how many HPE-CNNs which are available at present are ready to use in out-of-the-box inference to squash, to what extent they allow motion analysis and if detections can easily be used to provide insight to coaches and athletes. Therefore, we conducted a systematic investigation of more than 250 HPE-CNNs. After applying our selection criteria of open-source, pre-trained, state-of-the-art and ready-to-use, five variants of three HPE-CNNs remained, and were evaluated in the context of motion analysis for the racket sport of squash. Specifically, we are interested in detecting player's feet in videos from a single camera and investigated the detection accuracy of all HPE-CNNs. To that end, we created a ground-truth dataset from publicly available squash videos by developing our own annotation tool and manually labeling frames and events. We present heatmaps, which depict the court floor using a color scale and highlight areas according to the relative time for which a player occupied that location during matchplay. These are used to provide insight into detections. Finally, we created a decision flow chart to help sport scientists, coaches and athletes to decide which HPE-CNN is best for player detection and tracking in a given application scenario.


Assuntos
Redes Neurais de Computação , Esportes com Raquete , Computadores , Humanos , Aprendizado de Máquina , Movimento (Física)
7.
J Int Soc Sports Nutr ; 18(1): 46, 2021 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-34112186

RESUMO

BACKGROUND: There is a reported mismatch between macronutrient consumption and contemporary macronutrient guidelines in elite standard squash players. Suboptimal dietary practices could be due to a lack of nutrition knowledge among players. Subsequently, the purpose of this study was to assess the sports nutrition knowledge of elite squash players through the Nutrition for Sport Knowledge Questionnaire (NSKQ) and provide an indication of whether players require nutrition support to increase their nutrition knowledge. METHODS: This cross-sectional study assessed the nutrition knowledge of 77 elite squash players via the NSKQ over the period of June 2020 to August 2020. RESULTS: Players conveyed average nutrition knowledge with a mean NSKQ score of 48.78 ± 10.06 (56.07% ± 11.56%). There were no significant differences in NSKQ score between male and female players (p = .532). There was found to be a weak positive association between world ranking and NSKQ score (r = .208) and age and NSKQ score (r = .281). Players who had a relevant undergraduate degree (e.g. BSc Sport & Exercise Science) had significantly greater NSKQ score than players with no relevant qualifications (p = .022). Players who consulted a sports nutritionist to obtain their main source of nutrition information were shown to have significantly greater knowledge than those who acquired knowledge from a sports scientist (p = .01) or the internet / social media (p = .007). CONCLUSIONS: Players should consult with a sports nutritionist to increase their sport nutrition knowledge. Future research should quantify the effectiveness of a nutritional education intervention at increasing nutrition knowledge in players.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Estado Nutricional , Esportes com Raquete/psicologia , Fatores Etários , Comportamento Competitivo , Estudos Transversais , Escolaridade , Feminino , Humanos , Masculino , Nutrientes , Política Nutricional , Inquéritos e Questionários
8.
Nutrients ; 13(6)2021 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-34073684

RESUMO

BACKGROUND: Reports of probiotic consumption on athletes' performance are debatable due to their equivocal results. There is a need for more evidence on the effects of probiotic intake on psychological state and fitness level. Thus, this study determined the effects of daily probiotic consumption on competitive anxiety, perceived stress and mood among university badminton players, besides their fitness like aerobic capacity, strength, speed, leg power and agility. METHODS: Thirty university badminton players aged from 19 to 22 years old were randomly divided equally into two groups, where the probiotic group (PG; n = 15) received a drink that contained Lactobacillus casei Shirota (3 × 1010 CFU) and placebo group (CG; n = 15) a placebo drink for six weeks. Anxiety, stress and mood levels were determined using the CSAI-2R, PSS and BRUMS questionnaires, respectively. Fitness levels were measured using by subjecting the players to 20-m shuttle runs (aerobic capacity), handgrips (muscular strength), vertical jumps (leg power), 40-m dash (speed) and T-test (agility). The Student's t-test (p < 0.05) was used to determine the differences between PG and CG players. RESULTS: After six weeks, the anxiety and stress levels of PG players significantly decreased by 16% (p < 0.001) and 20% (p < 0.001), respectively, but there were no significant changes detected in CG players. Supplementation of probiotics also improved aerobic capacity in PG players by 5.9% (p < 0.001) but did not influence the speed, strength, leg power and agility. CONCLUSIONS: Probiotics supplementation showed improved aerobic capacity and relieve anxiety and stress. However, further studies need to be carried out to determine the mechanisms through which probiotic intake produces these effects.


Assuntos
Ansiedade/tratamento farmacológico , Aptidão Física , Probióticos/uso terapêutico , Esportes com Raquete , Estresse Psicológico/tratamento farmacológico , Adolescente , Afeto , Desempenho Atlético , Suplementos Nutricionais , Exercício Físico , Humanos , Lactobacillus casei , Força Muscular , Inquéritos e Questionários , Resultado do Tratamento , Universidades , Adulto Jovem
9.
Rev. bras. med. esporte ; 27(2): 174-178, Apr.-June 2021. graf
Artigo em Inglês | LILACS | ID: biblio-1280067

RESUMO

ABSTRACT Introduction: High-performance athletes often undergo periods of exhaustive training and insufficient recovery, which can lead to decreased performance, but it is not clear whether there are any differences between the sexes in the level of habitual physical activity, sedentary time or sleep quantity and quality in young highly trained badminton athletes. Objectives: The aim of this study was to compare the habitual physical activity (PA), sedentary time and sleep quantity and quality of highly trained young male and female badminton athletes and non-athletes. Methods: Twenty-seven young badminton athletes and twenty-one non-athletes (control group) were recruited. Sleep duration and quality (total time in bed, total sleep time, wake after sleep onset, sleep efficiency and latency), total counts, vigorous activity time and sedentary time were measured using a tri-axial accelerometer. Results: Male athletes spent less sedentary time (p=0.028), more time in vigorous activity (p=0.016) and had higher total counts (p<0.001) than the male control group. There were no significant differences in sedentary time (p=0.702) or vigorous activity time (p=0.205) between the female athletes and non-athletes, but the female athletes accumulated higher total counts than the female control group (p=0.003). There were no significant differences between the sexes or groups for time in bed, total sleep time, sleep efficiency, wake after sleep onset and latency (p> 0.05). Conclusion: Among males but not females, young highly trained badminton athletes had less sedentary time and more time in vigorous activity than the non-athletes, however, there were no significant differences between the sexes or groups in sleep quantity and quality. Level of evidence III; Case-control study .


RESUMEN Introducción: Los atletas de alto rendimiento con frecuencia son sometidos a períodos de entrenamiento exhaustivo y recuperación insuficiente, lo que puede llevar a una disminución del desempeño, pero no está claro si hay diferencia entre los sexos en cuanto al nivel de actividad física habitual, tiempo sedentario, cantidad y calidad del sueño en jóvenes atletas de bádminton altamente entrenados. Objetivos: El objetivo de este estudio fue comparar la actividad física habitual (AF), el tiempo de sedentarismo y la duración y calidad del sueño en jóvenes atletas de bádminton altamente entrenados y de no atletas, del sexo femenino y masculino. Métodos: Fueron reclutados veintisiete jóvenes atletas de bádminton y veintiuno no atletas (grupo control). La duración y la calidad del sueño (tiempo total en la cama, tiempo total de sueño, vigilia después del inicio del sueño, eficiencia y latencia del sueño), counts totales, el tiempo en actividad vigorosa y el tiempo de sedentarismo fueron medidos con un acelerómetro triaxial. Resultados: Los atletas del sexo masculino tuvieron menos tiempo de sedentarismo (p = 0,028), más tiempo de actividad vigorosa (p = 0,016) y mayor cantidad de counts totales (p <0,001) que el grupo control masculino. No hubo diferencias significativas en el tiempo de sedentarismo (p = 0,702) o tiempo de actividad vigorosa (p = 0,205), entre las atletas y no atletas, pero las atletas del sexo femenino acumularon mayor cantidad de counts totales que el grupo control femenino (p = 0,003). No hubo diferencias significativas entre los sexos o grupos para tiempo en la cama, tiempo total de sueño, eficiencia del sueño, vigilia después del inicio del sueño y latencia (p> 0,05). Conclusiones: Entre hombres, pero no entre mujeres, los jóvenes atletas de bádminton altamente entrenados tuvieron menor tiempo de sedentarismo y mayor tiempo en actividades vigorosas que los no atletas; entretanto, no hubo diferencia significativa entre los sexos o grupos en la cantidad y calidad del sueño. Nivel de evidencia III; Estudio de caso control .


RESUMO Introdução: Atletas de alto rendimento com frequência são submetidos a períodos de treinamento exaustivo e recuperação insuficiente, o que pode levar à diminuição do desempenho, mas não está claro se há diferença entre os sexos quanto ao nível de atividade física habitual, tempo sedentário, quantidade e qualidade do sono em jovens atletas de badminton altamente treinados. Objetivos: O objetivo deste estudo foi comparar a atividade física habitual (AF), o tempo de sedentarismo e a duração e qualidade do sono em jovens atletas de badminton altamente treinados e de não atletas, do sexo masculino e feminino. Métodos: Vinte e sete jovens atletas de badminton e vinte e um não atletas (grupo controle) foram recrutados. A duração e a qualidade do sono (tempo total na cama, tempo total de sono, vigília após o início do sono, eficiência e latência do sono), counts totais, tempo em atividade vigorosa e tempo de sedentarismo foram medidos com um acelerômetro triaxial. Resultados: Atletas do sexo masculino tiveram menos tempo de sedentarismo (p = 0,028), mais tempo de atividade vigorosa(p = 0,016) e maior quantidade de counts totais (p < 0,001) do que o grupo controle masculino. Não houve diferença significante no tempo de sedentarismo (p = 0,702) ou tempo de atividade vigorosa (p = 0,205) entre as atletas e não atletas, mas as atletas do sexo feminino acumularam maior quantidade de counts totais que o grupo controle feminino (p = 0,003). Não houve diferença significante entre os sexos ou grupos para tempo na cama, tempo total de sono, eficiência do sono, vigília após o início do sono e latência (p> 0,05). Conclusões: Entre homens, mas não entre mulheres, os jovens atletas de badminton altamente treinados tiveram menor tempo de sedentarismo e maior tempo em atividades vigorosas do que os não atletas; entretanto, não houve diferença significante entre os sexos ou grupos na quantidade e qualidade do sono. Nível de evidência III; Estudo de caso controle .


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Adulto Jovem , Sono/fisiologia , Exercício Físico/fisiologia , Esportes com Raquete/fisiologia , Desempenho Atlético/fisiologia , Esportes com Raquete/estatística & dados numéricos , Fatores Sexuais , Grupos Controle , Desempenho Atlético/estatística & dados numéricos
10.
J Sci Med Sport ; 24(8): 837-842, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34020884

RESUMO

OBJECTIVES: The purpose of this study was to determine thermoregulatory and cardiovascular effects of wearing men's lacrosse protective equipment during simulated lacrosse activities in the heat. DESIGN: We conducted a randomized, controlled, crossover study. METHODS: Thirteen healthy men (22 ±â€¯3 y, 76.2 ±â€¯8.9 kg, 181 ±â€¯6 cm, 16.06 ±â€¯6.16% body fat) completed two matched exercise trials in the heat (WBGT: 25.5 ±â€¯0.8 °C). In randomized order, participants donned full men's lacrosse equipment (helmet, shoulder/elbow pads, and gloves) in one trial while the other included no equipment. Participants completed a topography body scan to determine specific body surface area covered with equipment. Rectal temperature (Tre), heart rate (HR), and mean weighted skin temperature (Tsk) were measured throughout trials. Whole body sweat rate was assessed for trial comparisons. RESULTS: The equipment covered 32.62 ±â€¯2.53% body surface area in our participants. Post-exercise Tre was significantly greater with equipment (39.36 ±â€¯0.04 °C) compared to control (38.98 ±â€¯0.49 °C; p = .007). The overall rate of rise of Tre was significantly greater with equipment (0.043 ±â€¯0.015 °C·min-1) compared to control (0.031 ±â€¯0.008 °Cmin-1; p = .041). Regardless of time point, HR and Tsk were significantly elevated with equipment compared to control trial (p ≤ .026). Sweat rates were elevated with equipment (1.76 ±â€¯0.74 L·h-1) compared to shorts and t-shirt (1.13 ±â€¯0.26 L·h-1), but this difference was not significant (p = .058). CONCLUSIONS: Our data indicate impairments in heat dissipation and increased cardiovascular strain imposed by men's lacrosse equipment.


Assuntos
Temperatura Alta , Roupa de Proteção , Esportes com Raquete/fisiologia , Equipamentos Esportivos , Adulto , Regulação da Temperatura Corporal , Estudos Cross-Over , Ingestão de Energia , Frequência Cardíaca , Resposta ao Choque Térmico , Humanos , Masculino , Temperatura Cutânea , Sudorese , Adulto Jovem
11.
Ann Palliat Med ; 10(4): 4623-4631, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33966410

RESUMO

BACKGROUND: With the continuous development of modern badminton, higher requirements were put forward for the comprehensive quality of athletes. Studies show that players' ability of changing direction play an important role in badminton competition. In the present study, the SpeedCourt test system was used to study factors of badminton players' variable direction ability. METHODS: A total of 101 badminton players were included. The SpeedCourt test system was used to test the variable direction ability of players through three categories: speed chase, jump and reaction. Principal component analysis and moment structure analysis were used to analyze the test data. RESULTS: Four influencing factors were found of badminton players' variable direction ability; these are moving speed, coordination, reaction, and explosive force. The structural equation model of variable direction ability and the 4 influencing factors fit well with the measured data. The correlation between variable direction ability and coordination was the highest (r=0.91), followed by moving speed (0.86), reaction (r=0.81), and lower extremity explosive force (r=0.79). CONCLUSIONS: This paper demonstrates the structural equation model of badminton players' ability to change direction from an empirical point of view, which lays a foundation for the study of badminton players' agility and provides a reference for sports practice.


Assuntos
Desempenho Atlético , Esportes com Raquete , Humanos
12.
Biomed Res Int ; 2021: 5555853, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33987438

RESUMO

Objectives: Investigate the effects of integrated neuromuscular training (INT) on injury prevention and the performance of professional female badminton athletes by comparing their preintervention and postintervention tests. The study hypothesized that integrated neuromuscular training can improve the asymmetry and improve the sport performance of female badminton players. Methods: According to pretest value based on functional movement screening, 38 participants were divided into a high-risk group (HG) and a low-risk group (LG) with 22 and 16 people in each group. Two groups of athletes took part in an 8-week INT program consisting of four 90-min sessions each week. The asymmetries in movement, physical fitness, and special abilities were tested before and after the intervention. Independent sample t-test was used for the statistical analysis. Results: This research found indicated that 8 weeks of INT influenced FMS scores in both groups (HG and LG). The change of inline lunge (ES H = 0.42, ES L = 0.21) and trunk stability push-up (ES H = -0.58, ES L = -0.20) showed significant differences (P < 0.05), and the change of the FMS scores (ES H = 0.81, ES L = 0.65), deep squat (ES H = 0.6, ES L = 0.3), and rotation stability (ES H = -0.65, ES L = -0.72) showed very significant differences (P < 0.01). Compared to the pretest, most of the physical fitness parameters improved significantly in the HG and LG groups except strength index, and special abilities of the HG and LG group women badminton athletes showed a substantial increase. Conclusion: Integrated neuromuscular training can effectively improve the asymmetry of female badminton athletes' limbs, prevent sports injury, and improve the athlete's performance ability. However, athletes in different risk groups have certain differences in the degree of improvement in their motor skills.


Assuntos
Traumatismos em Atletas/prevenção & controle , Desempenho Atlético/fisiologia , Condicionamento Físico Humano/métodos , Esportes com Raquete/fisiologia , Adolescente , Atletas , Teste de Esforço , Feminino , Humanos
13.
Res Sports Med ; 29(4): 386-394, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33870819

RESUMO

High-speed running density (HSRd) is the ratio of high-speed efforts and distance covered. This study aimed to evaluate differences in HSRd between training, games, and among positions in collegiate women's lacrosse, and correlate HSRd with other training metrics. Data were collected during a collegiate training year (practices n = 162, games n = 14) through players (n = 25) wearing microtechnology. HSRd differed between training sessions and games (p < .001, d = .281) and by position (p < .001, d = .005-.712). Games (14.7 ± 13.8%) had a higher HSRd than training sessions (13.1 ± 13.7%), and goalies had higher HSRd during games than the other positions. HSRd was moderately inversely correlated (p < .001) with max speed (r = -.395-.543) and had low inverse correlations (p < .001) with distance (r = -.134-.225), accelerations (r = -217-.233), and decelerations (r = -.195-.268). Training did not mimic the HSRd of games. Defenders and goalies perform intense reactionary movements to make a defensive play, resulting in higher HSRd.


Assuntos
Desempenho Atlético/fisiologia , Esportes com Raquete/fisiologia , Corrida/fisiologia , Adolescente , Adulto , Feminino , Sistemas de Informação Geográfica , Humanos , Estudos Prospectivos , Universidades , Adulto Jovem
14.
J Athl Train ; 56(4): 437-445, 2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-33878178

RESUMO

CONTEXT: The National Federation of State High School Associations previously implemented 2 lacrosse rule modifications: Rule 5.4 in the 2012-2013 academic year to heighten the penalty for a head or neck hit to the head, face, or neck (HFN) and Rule 5.3.5 in the 2013-2014 academic year to minimize body checking. OBJECTIVE: To determine if the rates of overall injury, HFN injuries, and concussions due to intentional contact (checking) differed for boys' high school lacrosse players after Rule 5.4 and 5.3.5 modifications were enacted. DESIGN: Descriptive epidemiology study. SETTING: Web-based online surveillance system. PATIENTS OR OTHER PARTICIPANTS: Boys' high school lacrosse players during the 2008-2009 to 2016-2017 seasons whose teams involved athletic trainers participating in the High School Reporting Information Online sports injury-surveillance system. INTERVENTION(S): Rule 5.4 in the 2012-2013 academic year increased the penalty for any intentional hits to the HFN, and Rule 5.3.5 in the 2013-2014 year eliminated body checking to a player in a defenseless position. MAIN OUTCOME MEASURE(S): Overall, HFN, and concussion injury rate ratios (IRRs) by checking mechanism; overall and checking-related injury ratios by competitions and practices. RESULTS: A decrease was shown in checking-related HFN injuries (IRR = 0.29, 95% CI = 0.13, 0.65) and checking-related concussions (IRR = 0.29, 95% CI = 0.12, 0.70) during practices in the seasons after both rule modifications were imposed, but no decreases occurred in any checking-related injuries during competitions. By injury mechanism, no decreases were evident after the Rule 5.4 modification. When both rule modifications (Rules 5.4 and 5.3.5) were enacted together, concussion rates due to delivering body checks (IRR = 0.51, 95% CI = 0.29, 0.91) and overall injury risk due to being body checked (IRR = 0.72, 95% CI = 0.53, 0.97) decreased. CONCLUSIONS: When both Rule 5.4 and 5.3.5 modifications were in effect, concussion and overall injury risks decreased for the body checker and the player being body checked, respectively.


Assuntos
Traumatismos em Atletas/epidemiologia , Traumatismos em Atletas/prevenção & controle , Política Organizacional , Esportes com Raquete/lesões , Esportes , Adolescente , Concussão Encefálica/epidemiologia , Concussão Encefálica/prevenção & controle , Traumatismos Craniocerebrais/epidemiologia , Traumatismos Craniocerebrais/prevenção & controle , Traumatismos Faciais/epidemiologia , Traumatismos Faciais/prevenção & controle , Humanos , Incidência , Masculino , Lesões do Pescoço/epidemiologia , Lesões do Pescoço/prevenção & controle , Instituições Acadêmicas , Estados Unidos/epidemiologia
15.
Clin Biomech (Bristol, Avon) ; 85: 105366, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33915493

RESUMO

BACKGROUND: The aim of this study was to describe the differences in structural and mechanical properties between operated and non-injured Achilles tendons in senior badminton players who had had Achilles tendon surgery and had returned to play. METHODS: Eighteen players (age = 48.9(10.0)years), assigned to the unilateral Achilles tendon rupture group and 177 non-injured players (age = 55.4(9.4)years), assigned to the control group. A Logiq®S8 ultrasound was used to study tendon structure and elastography index values and a Myoton®PRO hand-held myotonometer was used to record the stiffness of the Achilles tendon. FINDINGS: In Achilles tendon rupture group, operated tendons showed higher values than non-injured ones in thickness (Operated = 9.03(2.67)mm vs. non-injured = 5.88(0.88)mm; P < 0.001), width (Operated = 18.44(3.20)mm vs. non-injured = 16.80(1.97)mm; P = 0.039), cross sectional area (Operated = 140.33(60.29)mm2 vs. non-injured = 74.40(17.09)mm2; P < 0.001) and elastography index (Operated = 2.05(1.35)A.U. vs. non-injured = 1.47(0.62)A.U.; P = 0.025). The bilateral differences shown by the Achilles tendon rupture group were greater than the bilateral differences shown by the control group for thickness (P < 0.001), width (P = 0.001), cross sectional area (P < 0.001), tone (P = 0.006) and dynamic stiffness (Achilles tendon rupture group = 10.85(23.90)N∙m-1. vs. control group = 0.18(18.83)N∙m-1; P = 0.031). INTERPRETATION: Surgery on the Achilles tendon and adaptation to the mobilisation and strength training during rehabilitation could provoke structural and mechanical differences compared to the non-injured tendon. Furthermore, the differences between both Achilles tendons in the Achilles tendon rupture group was higher than the asymmetry observed between dominant and non-dominant Achilles tendons in the control group. In addition, the higher logarithmic decrement values showed by non-injured tendons in the Achilles tendon rupture group could be a tendinous injury risk factor.


Assuntos
Tendão do Calcâneo , Esportes com Raquete , Traumatismos dos Tendões , Tendão do Calcâneo/diagnóstico por imagem , Tendão do Calcâneo/cirurgia , Adaptação Fisiológica , Humanos , Pessoa de Meia-Idade , Ruptura/diagnóstico por imagem , Ruptura/cirurgia , Traumatismos dos Tendões/diagnóstico por imagem , Traumatismos dos Tendões/cirurgia , Ultrassonografia
16.
Comput Biol Med ; 132: 104302, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33677166

RESUMO

Anterior knee pain is a commonly documented musculoskeletal disorder among badminton players. However, current biomechanical studies of badminton lunges mainly report kinetic profiles in the lower extremity with few investigations of in-vivo loadings. The objective of this study was to evaluate tissue loadings in the patellofemoral joint via musculoskeletal modelling and Finite Element simulation. The collected marker trajectories, ground reaction force and muscle activation data were used for musculoskeletal modelling to compute knee joint angles and quadricep muscle forces. These parameters were then set as boundary conditions and loads for a quasistatic simulation using the Abaqus Explicit solver. Simulations revealed that the left-forward (LF) and backward lunges showed greater contact pressure (14.98-29.61%) and von Mises stress (14.17-32.02%) than the right-forward and backward lunges; while, loadings in the left-backward lunge were greater than the left-forward lunge by 13-14%. Specifically, the stress in the chondral layer was greater than the contact interface, particularly in the patellar cartilage. These findings suggest that right-side dominant badminton players load higher in the right patellofemoral joint during left-side (backhand) lunges. Knowledge of these tissue loadings may provide implications for the training of badminton footwork, such as musculature development, to reduce cartilage loading accumulation, and prevent anterior knee pain.


Assuntos
Articulação Patelofemoral , Esportes com Raquete , Fenômenos Biomecânicos , Humanos , Articulação do Joelho , Extremidade Inferior
17.
J Craniofac Surg ; 32(4): 1571-1573, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33654036

RESUMO

INTRODUCTION: Lacrosse is played widely across the United States, as evidenced by growing participation in the sport. The rapid increase in participation suggests that many of the new players are inexperienced. Many coaches might be ill-equipped to deal with player trauma. There are several crucial differences in the way the sports are played between males and females, altering the experience of the game and the injury profiles that may arise. METHODS: A query of the National Electronic Injury Surveillance System database was performed to study the types of craniofacial injuries incurred from lacrosse. RESULTS: Concussions were the most common injury type, and players between 10 and 14 years old were found to be at greater risk of contusions relative to older players. Players between 15 and 19 years old were at a greater risk of sustaining lacerations. In terms of gender, females were more likely to experience concussions than males, and were at increased risk of head injuries relative to face injuries. DISCUSSION: The finding that females are at increased risk of concussion might be subsequent to a lack of adequate training by coaches. Female athletes tend to experience worse outcomes following concussions incurred secondary to playing sports. Recent work has suggested that this may be a consequence of female anatomy; women tend to have shorter neck dimensions, which predisposes them to more deleterious head-neck accelerations, and thus concussions. These results may inform a layperson-friendly algorithm for the workup of craniofacial injuries sustained from lacrosse.


Assuntos
Traumatismos em Atletas , Concussão Encefálica , Traumatismos Craniocerebrais , Esportes com Raquete , Adolescente , Adulto , Algoritmos , Traumatismos em Atletas/epidemiologia , Concussão Encefálica/epidemiologia , Criança , Traumatismos Craniocerebrais/epidemiologia , Traumatismos Craniocerebrais/etiologia , Feminino , Humanos , Masculino , Estados Unidos/epidemiologia , Adulto Jovem
18.
J Strength Cond Res ; 35(5): 1177-1181, 2021 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-33780393

RESUMO

ABSTRACT: Haischer, MH, Krzyszkowski, J, Roche, S, and Kipp, K. Impulse-based dynamic strength index: considering time-dependent force expression. J Strength Cond Res 35(5): 1177-1181, 2021-The dynamic strength index (DSI) is a useful tool to assess an athlete's capacity to effectively use maximum strength during dynamic tasks. Although DSI is traditionally calculated based on peak forces, the ability to express force over time (i.e., impulse) is a better predictor of dynamic performance. The purpose of this study was to investigate the association between DSI calculated based on peak force (fDSI) and impulse (iDSI). Nineteen female collegiate lacrosse players performed countermovement jumps (CMJs) and isometric midthigh pulls (IMTPs). Peak force and impulse were extracted from CMJ and IMTP force-time data. Countermovement jump impulse was calculated by integrating force over the concentric movement time, whereas IMTP impulse was calculated by integrating force over the CMJ-matched movement time. Ratios between CMJ and IMTP peak force and impulse were used to calculate fDSI and iDSI, respectively. A moderate positive correlation existed between iDSI and fDSI (ρ = 0.644 [0.283-0.840], p = 0.003). Based on thresholds established in the literature, the 2 indices suggest conflicting training recommendations for 37% of athletes. Because impulse is a better predictor of dynamic performance, iDSI may represent a more valid method for assessing an athlete's capacity to effectively use maximum strength during dynamic tasks. Practitioners and researchers may want to consider augmenting current training and research practices with an impulse-based DSI.


Assuntos
Força Muscular , Esportes com Raquete , Atletas , Feminino , Humanos , Movimento
19.
J Sports Sci Med ; 20(1): 101-109, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33707993

RESUMO

This study investigated the relationships between internal and external training load metrics across a 2-week 'in-season' microcycle in squash. 134 on-court and 32 off-court 'conditioning' sessions were completed by fifteen elite squash players with an average (±SD) of 11 ± 3 per player. During every session, external load was captured using a tri-axial accelerometer to calculate Playerload; i.e., the instantaneous rate of change of acceleration across 3-dimensional planes. Internal load was measured using heart rate (HR), global (sRPE) and differential RPE (dRPE-Legs, dRPE-Breathing). Additionally, HR was used to calculate Banister's, Edward's and TEAM TRIMPs. Across 166 training sessions, Playerload was moderately correlated with TRIMP-Banister (r = 0.43 [95% CI: 0.29-0.55], p < 0.001) and TRIMP-Edwards (r = 0.50 [0.37-0.61], p < 0.001). Association of Playerload with TRIMP-TEAM (r = 0.24 [0.09-0.38], p = 0.001) was small. There was a moderate correlation between sRPE and Playerload (r = 0.46 [0.33-0.57], p < 0.001). Association of sRPE was large with TRIMP-Banister (r = 0.68 [0.59-0.76], p = 0.001), very large with TRIMP-Edwards (r = 0.79 [0.72-0.84], p < 0.001) and moderate with TRIMP-TEAM (r = 0.44 [0.31-0.56], p < 0.001). Both dRPE-Legs (r = 0.95 [0.93-0.96], p < 0.001) and dRPE-Breathing (r = 0.92 [0.89-0.94], p < 0.001) demonstrated nearly perfect correlations with sRPE and with each other (r = 0.91 [0.88-0.93], p < 0.001). Collection of both internal and external training load data is recommended to fully appreciate the physical demands of squash training. During a training microcycle containing a variety of training sessions, interpreting internal or external metrics in isolation may underestimate or overestimate the training stress a player is experiencing.


Assuntos
Atletas , Frequência Cardíaca/fisiologia , Condicionamento Físico Humano/métodos , Esportes com Raquete/fisiologia , Taxa Respiratória/fisiologia , Aceleração , Acelerometria , Desaceleração , Feminino , Humanos , Malásia , Masculino , Monitorização Fisiológica/métodos , Movimento/fisiologia , Músculo Esquelético/fisiologia , Condicionamento Físico Humano/fisiologia , Fatores de Tempo , Dispositivos Eletrônicos Vestíveis , Adulto Jovem
20.
J Am Podiatr Med Assoc ; 111(1)2021 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-33690809

RESUMO

A 34-year-old female recreational badminton player presented with left ankle pain 1 week after a recreational badminton game. She reported experiencing a similar pattern of pain in her right ankle 4 months before that had persisted for 3 months. On plain radiography, callus formation was evident on the right distal fibula, and a subtle lesion was observed on the left side. Ultrasound was performed with the clinical suspicion of bilateral, nonsimultaneous, distal fibular stress fracture. Focal hyperechoic thickening of the periosteum with irregularity and hypoechoic periosteal edema over the left distal fibula were identified. These findings were consistent with stress fracture, and an early phase of distal fibular stress fracture was diagnosed. This case report highlights that ultrasound can be an alternative modality to magnetic resonance imaging or bone scan scintigraphy for the early diagnosis of stress fracture.


Assuntos
Fraturas Ósseas , Fraturas de Estresse , Esportes com Raquete , Adulto , Diagnóstico Precoce , Feminino , Fíbula/diagnóstico por imagem , Fraturas de Estresse/diagnóstico por imagem , Humanos , Radiografia
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