Combat sport in the body composition of the elderly: A systematic review and meta-analysis study.

OBJECTIVE: To analyze possible changes in body composition in elderly individuals with combat sports as an intervention. METHODS: This study is characterized as a systematic review and meta-analysis. The PRISMA criteria were followed, and the study was registered in PROSPERO under the number CRD42023392613. The databases used were MEDLINE (via PubMed), Scopus, SPORTDiscus, Web of Science, and Science Direct. The risk of bias and methodological quality were assessed using Robins-I, Cochrane, and Testex tools. RESULTS: Of the 126 publications found, 9 studies were included (5 controlled and randomized studies and 4 intervention studies). Of these studies, 6 provided data for the meta-analysis. A total of 126 publications were found and, the studies included in this systematic review had an average of 51 weeks, 3 times a week, and 50 min per session. In the results presented by the meta-analysis the variable body fat showed a reduction (SMD: -0.11; 95% CI: -0.99 to 0.09; p = 0.02; I2 = 0%). CONCLUSION: Combat sports showed an improvement in the body composition of the elderly, with a reduction in the percentage of body fat.

The Association between Physical Activity and Anxiety in Aging: A Comparative Analysis.

(1) Background: As the worldwide aging population is growing, there is a need to embrace the role of physical activity in the anxiety of older people. Objectives: To analyze anxiety in older people practitioners and non-practitioners of physical activity; (2) Methods: ample composed of 690 older people of both genders, unselected volunteers, residing in Brazil, present (as participants or observers) in selected street races in the state of Rio de Janeiro, Brazil, between 30 October 2019, and 12 March 2020. An instrument composed of the sociodemographic questionnaire and questions from the Beck Anxiety Inventory, BAI, and the Physical Activity Inventory for older people, Baecke-Old. Design: Ex-post-facto observational analytical descriptive research; (3) Results: The average age of the sample was in the range of 65 to 69y, 74% female, 94% completed high school, 69% living with the family, 84% practicing physical activity. Anxiety levels were 26% (without), 35% (mild), 21% (moderate), and 18% (severe). The comparison of anxiety showed a difference between the groups of active and sedentary elderly. Logistic regression analysis considering anxiety (yes or no; dichotomous variable) and physical activity (yes or no; dichotomous variable) and Odds Ratio were performed to identify possible influences of the independent variables PA, gender, marital status, and education on anxiety. Only physical activity was associated with anxiety. (4) Conclusions: The sample data of this research point to the conclusion that physical activity influences anxiety levels with 98% certainty, and it is suggested that it be enriched in the future with different studies with different designs. The older people practitioners of physical activity with a high level of education presented as 26% without, 35% mild, 21% moderate, and 18% severe anxiety. More active individuals are less likely to develop anxiety.

Hemodynamic and motion demands of soccer referees: a comparison between series A and B of the State Championship of Rio de Janeiro, Brazil / Las demandas hemodinámicas y de movimiento de los árbitros de fútbol: una comparación entre las series A y B del Campeonato Estatal de Río de Janeiro, Brasil

Introduction: Soccer referees need excellent conditioning to withstand the physical and psychological demands of games.Objective: To compare the hemodynamic variables, speed, cadence, and distance coursed of referees during soccer gamesof series A and B in Rio de Janeiro, Brazil. Material and method: The total number of decisions made during the 10 soccer matches evaluated was 1,224 observabledecisions of 10 professional Soccer referees (one per soccer match: 5 in series A and 5 in series B). We used a frequency meter(Polar, model V800, PolarFlow software) and video footage of the games (Sony, model PXW-Z150, 4K). The moments considered were: the decision, 15 seconds that preceded it, and the period from the beginning of each stage to each decision. Were studied the hemodynamic [average heat rate (mean HR), maximum heart rate (HRmax), and minimum heart rate (HRmin)]and motion variables [average speed (Vmed), maximum speed (Vmax), average cadence (cadencemed), maximum cadence(cadencemax), minimum cadence (cadencemin), and distance covered]. Descriptive measures were used to present the resultsof the variables studied and the Student’s T-Test for independent samples to test the study hypotheses. The significance levelwas set at 95% (P <0.05). Results: The matches of series A had a greater number of interventions and greater hemodynamic load at the exact momentof the decision than those of series B. significantly (P <0.05): mean HR, HRmax, HRmin, Vmax, Cadencemed, and Cadencemax in seriesA were higher compared to series B. In the 15 seconds before the decisions: mean HR, HRmax, and HRmin in series A were higherthan in series B, and Vmed in series B was higher in relation to series A. At the exact moment of the decisions: mean HR in seriesA was higher in relation to series B...(AU)

Introducción: Los árbitros de fútbol necesitan un excelente acondicionamiento para soportar las exigencias físicas y psicológicas de los partidos. Objetivo: Comparar las variables hemodinámicas [frecuencia cardíaca media (mean HR), frecuencia cardíaca máxima (HRmax)y frecuencia cardíaca mínima (HRmin)] y desplazamiento [velocidad media (Vmed), velocidad máxima (Vmax), cadencia media(cadencemed), cadencia máxima (cadencemax), cadencia mínima (cadencemin) y distancia recorrida] durante intervencionesarbitrales en partidos entre las series A y B en Río de Janeiro, Brasil. Material y método: Se analizaron 1.224 decisiones observables de 10 árbitros profesionales de fútbol cada uno en 1 partido(10 partidos del Campeonato Carioca: 5 en la serie A y 5 en la B). Se utilizaron frecuencímetros (Polar, modelo V800, softwarePolarFlow) y secuencias de video de los juegos (Sony, modelo PXW-Z150, 4K). Los momentos considerados fueron: la decisión,los 15 segundos que la precedieron y el tiempo desde el inicio de cada etapa hasta cada decisión. Resultados: Los partidos de la serie A tuvieron mayor número de intervenciones y mayor carga hemodinámica en el momentoexacto de la decisión que los de la serie B. significativamente (p <0,05): mean HR, HRmax, HRmin, Vmax, cadencemed y cadencemaxin la serie A fueron mayores que en la serie B. En los 15 segundos previos a las decisiones: mean HR, HRmax y HRmin en la serieA fueron mayores con relación a la serie B, la Vmed en la serie B fue mayor en relación a la serie A. Conclusión: Las intervenciones de los árbitros generalmente se realizan bajo presión hemodinámica elevada. Los partidosdisputados en la serie A requieren un número de intervenciones e intensidad hemodinámica superior a los partidos de laserie B...(AU)

Influence of resistance training on muscle architecture in older adults: A systematic review and meta-analysis of randomized controlled trials.

BACKGROUND: Resistance training (RT) consists of planned exercise programs to increase muscle strength capacity through neural and structural adaptations, such as changes in the geometric arrangement of muscle fibers. This study aimed to analyze the influence of RT on muscle architecture in older people. METHODS: This PROSPERO-registered systematic review and meta-analysis (identification number CRD42022340477) followed the PRISMA guidelines. Four electronic databases were searched for eligible randomized controlled trials (RCTs) that observed older individuals submitted to RT programs that reported muscle architecture outcomes. RESULTS: Seventeen RCTs met the eligibility criteria with a total of 488 participants. The main results of the meta-analysis showed that RT interventions had a significant effect on the thickness of the medial gastrocnemius (SMD = 0.12; 95% CI: - 0.07 to 0.17; p < 0.00001; I2 = 0%). CONCLUSION: Based on available evidence, studies included in this review showed improvement in maximum isometric force, pennation angle, fascicle length, thickness, and muscle activation after RT interventions. In turn, the meta-analysis suggested a potential for improving the thickness of the medial gastrocnemius after the intervention. However, any clinical implications drawn from the analyses should be interpreted with caution, as these findings are substantially limited due to a low number of included studies and a potential heterogeneity between studies.

Effects of Multicomponent Exercise Training on the Health of Older Women with Osteoporosis: A Systematic Review and Meta-Analysis.

This study aimed to analyze the effects of multicomponent exercise training in older women with osteoporosis. We conducted a systematic review following the PRISMA guidelines and registered on PROSPERO (number CRD42022331137). We searched MEDLINE (via PubMed), Web of Science, Scopus, and CINHAL databases for randomized experimental trials that analyzed the effects of physical exercise on health-related variables in older women with osteoporosis. The risk of bias in the studies was verified using the Cochrane Collaboration tool and the Jadad scale was used to assess the methodological quality of the studies. Fourteen randomized controlled trials were included, with a total of 544 participants in the experimental group and 495 in the control group. The mean age of all participants was 68.4 years. The studies combined two to four different exercise types, including strength, aerobic, balance, flexibility, and/or functional fitness training. The practice of multicomponent training with an average of 27.2 weeks, 2.6 sessions per week, and 45 min per session showed improvements in strength, flexibility, quality of life, bone mineral density, balance, and functional fitness and reduced the risk of falls in older women with osteoporosis. Multicomponent training was shown to be effective in improving health-related variables in older women with osteoporosis.

Resistance Circuit Training or Walking Training: Which Program Improves Muscle Strength and Functional Autonomy More in Older Women?

To evaluate the effects of two programs (resistance and walking training) on the functional autonomy and muscle strength (isometric and dynamic) of older women, 67 subjects were divided randomly into three groups: resistance training (RTG; Mean = 64.70 ± 6.74 years), walking (WG, Mean = 65.56 ± 7.82 years), and control (CG; Mean = 64.81 ± 4.34). The experimental groups underwent a 16-week intervention. Muscle strength (isometric and dynamic) and functional autonomy were assessed. The subjects participating in the RTG showed improvements in the comparison pre to post-test in the maximal forces of upper limb (MULS) (Δ% = 49.48%; p = 0.001) and lower limb (MLLS) (Δ% = 56.70%; p = 0.001), isometric biceps forces (BIS) (Δ% = 30.13%; p = 0.001) and quadriceps forces (QIS) (Δ% = 65.92%; p = 0.001), and in the general index (GI) of functional autonomy (Δ% = −18.32%; p = 0.002). The WG improved in all functional autonomy tests, except for the standing up from prone position test (SVDP). In strength tests, the WG obtained improvements only in the QIS (Δ% = 41.80%; p = 0.001) and MLLS (Δ% = 49.13%; p = 0.001) tests. The RTG obtained better results (p < 0.05) when compared to the WG and CG. The results allow us to infer that resistance exercise programs are more effective in increasing strength and functional autonomy, a fact that may mitigate the deleterious effects on health of aging.

Effects of two training programs on health variables in adults with chronic low back pain: a randomized clinical trial.

Aim: To analyze the effects of two training programs on health variables in adults with low back pain (LBP). Methods: Thirty-eight adults were randomly divided into three groups: resistance training (RG); resistance training with core training (RCG) and control (CG). Results: There were reductions in body mass index (BMI) in RG and RCG, waist circumference in RG and RCG, pain in RG, RCG and CG, CK in RCG, stress in RG and RCG, functional deficiency in RG and RCG and increases in trunk flexor and extensor strength in the RG and RCG. Conclusion: Resistance training, with or without core training exercises, reduced the levels of LBP, functional disability, stress and CK, and increased the strength of trunk flexors and extensors. Trial registration: Brazilian Clinical Trials Registry: ReBEC (RBR-5khzxz).

Resistance and core exercises can be an alternative treatment for adults with low back pain (LBP) that does not require any medicines. This study was designed to test the effectiveness of different exercise regimens on the health of people with low back pain. We divided adults with LBP into three groups: resistance training, resistance training with core training and a control group. We assessed the health of the participants by measuring certain chemicals in their blood samples, pain intensity, functional disability, perceived stress level and muscle strength. After 4 weeks, there were reductions in body mass index, waist circumference, pain, creatine kinase (CK ­ a natural chemical found in the bloodstream that may be higher when muscles are stressed or damaged), stress, functional impairment and increases in the strength of muscles involved in flexing the trunk (torso) in both intervention groups. Therefore, resistance training, with or without basic training exercises, is an effective form of treatment to reduce LBP.

Philosophy of physical education and sports in Brazil: an analysis of the philosophical foundations in the work of Inezil Penna Marinho / Filosofia da educação física e do esporte no Brasil: uma análise dos fundamentos filosóficos na obra de Inezil Penna Marinho

ABSTRACT The present study aimed to investigate the historical origins of the Philosophy of Physical Education and Sports in Brazil. The writings of Inezil Penna Marinho, former Professor of the University of Brazil between 1945 and 1984, were the first on this specific content in Brazil. Data collection resulted in six thematic categories, namely "Comments on Translated Fragments", "Philology of Physical Education and Sports", "Games, Hedonism and Transfiguration", "Leisure and Axiology", "Philosophy of Curricular Physical Education", and "Metaphysics of Brain". Marinho was an Eclectic, Foundationalist, and Casuistic philosopher. In his texts, Physical Education got ethical, axiological, aesthetical, epistemic, psychoanalytical, educational, political, and metaphysical attributes. Additionally, Marinho developed dialogues with authors from Aristotelianism, Platonism, Renaissance, Enlightenment, Evolutionism, Empirism, Freudism, Critical Theory, Hedonism, Platonic Theology, Stoicism, Cartesianism, and Bergsonism. Five classical issues appeared in his production: happiness as a transcendental demand; nature of the correspondence between language and reality; duality mind-body; historical conflict between freedom and domination; constitution of the subject. For him, gymnastics seemed to be higher in axiological importance than sports, games, and general physical activity. This result shows that the Philosophy of Physical Education and Sports in Brazil has its own traditions.

RESUMO O presente estudo objetivou investigar as origens históricas da Filosofia da Educação Física e do Esporte no Brasil. Os escritos de Inezil Penna Marinho, ex-professor da Universidade do Brasil entre 1945 e 1984, foram os primeiros sobre esse conteúdo específico no Brasil. A coleta de dados resultou em seis categorias temáticas, nomeadamente "Comentários sobre Fragmentos Traduzidos", "Filologia da Educação Física e Desporto", "Jogos, Hedonismo e Transfiguração", "Lazer e Axiologia", "Filosofia da Educação Física Curricular" e "Metafísica do cérebro". Marinho foi um filósofo eclético, fundacionalista e casuístico. Nos textos de Marinho, a Educação Física tem atributos éticos, axiológicos, estéticos, epistêmicos, psicanalíticos, educacionais, políticos e metafísicos. Adicionalmente, Marinho desenvolveu diálogos com autores do Aristotelismo, Platonismo, Renascimento, Iluminismo, Evolucionismo, Empirismo, Freudismo, Teoria Crítica, Hedonismo, Teologia Platônica, Estoicismo, Cartesianismo e Bergsonismo. Cinco questões clássicas apareceram em sua produção: a felicidade como demanda transcendental; natureza da correspondência entre linguagem e realidade; dualidade mente-corpo; conflito histórico entre liberdade e dominação; constituição do sujeito. Para Marinho, a ginástica parecia ter maior importância axiológica do que esportes, jogos e atividade física geral. Esse resultado mostra que a Filosofia da Educação Física e do Esporte no Brasil possui tradições próprias.

The acute effect of two massage techniques on functional capability and balance in recreationally trained older adult women: A cross-over study.

With aging comes a reduction in neuromuscular and neuromotor function. Different strategies have been used to mitigate these functional losses. Certain manual therapy techniques and interventions have been explored with regard to their ability to improve functional capability and balance in an older adult population. The purpose of this study was to analyze the acute effects of two massage techniques on functional capability and balance performance in recreationally trained older adult women. Twenty-eight older adult women (66.74 ± 4.61 years) completed three interventions: a) stick massage followed by functional capability and balance performance tests (MMS), b) manual massage followed by functional capability and balance performance tests (MM), c) no MMS or MM (control condition (CC)) - only performed the functional capability and balance performance tests. Functional capability was assessed by four tests that are part of the Senior Fitness Test: the 6-min walk (W6), the chair sit-and-reach (CSR), the 8-foot up-and-go (8FUG), and the 30s-chair stand (30s-CS). Balance was assessed using the Berg Balance Scale (BBS). Significant differences (p < 0.001) were observed between MM and MMS compared to CC among 30s-CS, W6, CSR, and 8FUG. BBS showed a significant difference between MM and CC (p = 0.041). Both MM and MMS demonstrated significant acute improvements in the functional capability of recreationally trained elderly women and may be included in an exercise program.

Effects of Motor Imagery as a Complementary Resource on the Rehabilitation of Stroke Patients: A Meta-Analysis of Randomized Trials.

BACKGROUND: Stroke is the second leading cause of death and a leading cause of disability worldwide. Motor imagery is a technique that can be utilized in the rehabilitation process to improve the lives of patients with a functional disability acquired by this pathology. AIM: To evaluate the effects of motor imagery as a complementary intervention for the rehabilitation of stroke patients. METHODS: We conducted a systematic review in MEDLINE/PubMed, Scopus, Web of Science, and PEDro databases. We included randomized controlled trials (RCTs) that used motor imagery as a complementary resource for the rehabilitation of patients affected by stroke, who had motor function and functional independence as outcomes. RESULTS: Of the 1,473 studies found, ten RCTs were included. Regarding the interventions, motor imagery was associated with traditional rehabilitation, virtual reality, physical practice, structured progressive circuit class therapy, and electromyography. The upper and lower extremity performance were accessed through the Fugl-Meyer Assessment (FMA) and gait speed, respectively. Although the practice of motor imagery at least twice a week during three weeks showed to be effective in improving the motor performance of post-stroke patients, the studies' protocols present a high heterogeneity, with training session times lasting between 30 to 180 minutes and a post-stroke invention window of one to 12 months. CONCLUSIONS: Motor imagery has been shown to be an efficacious technique in the treatment of post-stroke patients when used as a complement to traditional rehabilitation techniques. However, greater standardization of interventions and studies with higher methodological quality are required to determine further conclusions.

Crawl technique observation sheet for beginning swimmers: an evaluation proposal for swimming teachers

Abstract Aims: This study aimed to present a technical evaluation proposal for the crawl stroke that can be used with large groups of swimmers, based on an observation sheet. Methods: Fifteen healthy university students aged between 18 and 30 years were chosen to participate in the study. The subjects were recorded swimming at a distance of 50 meters using the crawl technique at a comfortable and self-determined speed. The recordings simulated docent observation capacity. Five swimming teachers were selected to evaluate the proposed checklist and the subjects' technique. An observation sheet was created based on references present in literature containing ten items that are considered fundamental for swimming movements. The study was divided into (i) checklist validation, (ii) intra-evaluator consistency, and (iii) inter-evaluator consistency. Results: The proposed checklist fulfilled the validity criteria, with intra-evaluator consistency varying between reasonable and substantial, with k varying between 0.36 and 0.73 respectively, while inter-evaluator consistency was deemed reasonable (k = 0.24). Conclusion: According to the results that were obtained, the suggested list is valid and adequate for what it proposes to do.

Kinesiophobia and functionality perception in postmenopausal women with chronic low back pain / Cinesiofobia e percepção de funcionalidade em mulheres na pós-menopausa portadoras de lombalgia crônica

ABSTRACT BACKGROUND AND OBJECTIVES: Low back pain is the main cause of global disability and is prevalent in women, tending to increase after menopause. The present study aimed to analyze the correlation between body mass index, muscle strength, kinesiophobia, estradiol, functional disability, and low back pain perception in postmenopausal women with chronic low back pain. METHODS: Twenty-two postmenopausal women with chronic low back pain were evaluated. Abdominal and lower back strength were assessed using isometric tests. Basal serum estradiol levels were analyzed using the chemiluminescence method. Kinesiophobia, low back pain perception, and low back functional disability were determined using the Tampa Scale for Kinesiophobia, the visual analog scale, and the Roland Morris Questionnaire, respectively. RESULTS: The Spearman correlation test showed correlations between the levels of kinesiophobia and the value of body mass (rho= -0.513; p=0.015) and the levels of kinesiophobia and the values of body mass index (rho= -0.576; p=0.005). There was correlation between the levels of kinesiophobia and perception of lumbar functional disability (rho= 0.434; p=0.043). No significant correlations were found between the variables of muscle strength, estradiol, and low back pain perception. CONCLUSION: Postmenopausal women with low back pain who have higher body mass and body mass index values tend to present lower levels of kinesiophobia. There is a direct relationship between the fear of moving or maintaining a specific position and the perception of the functionality and safety of the lumbar spine.

RESUMO JUSTIFICATIVA E OBJETIVOS: A dor lombar é a principal causa de incapacidade global e possui prevalência em mulheres, tendendo a aumentar após a menopausa. O presente estudo objetivou analisar as associações entre índice de massa corporal, força muscular, cinesiofobia, estradiol, incapacidade funcional e percepção de dor lombar em mulheres na pós-menopausa com dor lombar crônica. MÉTODOS: Foram avaliadas 22 mulheres na pós-menopausa diagnosticadas com dor lombar crônica. A força abdominal e dos extensores da coluna foi avaliada por meio de testes isométricos. Os níveis séricos basais de estradiol foram analisados pelo método de quimiluminescência. A cinesiofobia, a percepção de dor e a incapacidade funcional lombar foram determinadas pela Tampa Scale for Kinesiophobia, escala analógica visual e Roland Morris Questionnaire, respectivamente. RESULTADOS: O teste de correlação de Spearman mostrou associações entre os níveis de cinesiofobia e os valores de massa corporal total (rho=-0,513; p=0,015) e os níveis de cinesiofobia e os valores de índice de massa corporal (rho=-0,576; p=0,005). Foi encontrada correlação entre os níveis de cinesiofobia e de percepção de incapacidade funcional lombar (rho=0,434; p=0,043). Não houve correlações significativas entre as variáveis força muscular, estradiol e percepção de dor. CONCLUSÃO: Mulheres na pós-menopausa com dor lombar crônica que apresentam maiores valores de massa corporal total e índice de massa corporal tendem a apresentar menores níveis de cinesiofobia. Existe relação direta entre o medo de se movimentar ou permanecer em uma posição específica e a percepção de funcionalidade e segurança da coluna lombar.

Cortisol and serotonin levels in schizophrenic inpatients undergoing aerobic training / Níveis de cortisol e serotonina em pacientes esquizofrênicos submetidos a treinamento aeróbico / Niveles de cortisol y serotonina en pacientes esquizofrénicos sometidos a entrenamiento aeróbico

ABSTRACT Introduction Individuals with schizophrenia tend to have high levels of cortisol and changes in the serotonergic mechanism. However, the effects of aerobic exercises on cortisol and serotonin levels in schizophrenic inpatients are not well established. Objective To evaluate the effects of an aerobic training program on serotonin and cortisol levels in schizophrenic inpatients. Methods Thirty schizophrenic subjects were randomly assigned to an exercise group (EG; n = 15; age: 29 ± 9.08 years; BMI: 23.57 ± 4.33 kg/m2) or a control group (CG; n = 15; age: 33.17 ± 12.8 years; BMI: 22.89 ± 5.68 kg/m2). EG performed an aerobic training program in a cycle ergometer (57% to 67% of the maximum heart rate) for 30 minutes, five days a week, with a total of twenty sessions. The analysis of cortisol (Chemiluminescence Method) and serotonin (High Performance Liquid Chromatography) was performed before and after testing in both groups. The level of significance was of p<0.05. Results After the exercise sessions, EG showed a significant reduction in cortisol levels (Δ = -5.68 mcg/dl%, p < 0.0001) and a significant increase in serotonin levels (Δ = 47.63 ng/ml, p = 0.015) compared to CG. Conclusion The aerobic training program was effective in reducing cortisol levels and increasing serotonin levels in schizophrenic inpatients. Level of evidence I; Randomized clinical trial.

RESUMO Introdução Indivíduos com esquizofrenia tendem a apresentar níveis elevados de cortisol e alterações no mecanismo serotoninérgico. Entretanto, os efeitos dos exercícios aeróbicos sobre os níveis de cortisol e serotonina em pacientes esquizofrênicos não estão bem estabelecidos. Objetivos Avaliar os efeitos de um programa de treinamento aeróbico sobre os níveis de serotonina e cortisol em pacientes esquizofrênicos internados. Métodos Trinta indivíduos esquizofrênicos foram randomicamente designados para um grupo de exercícios (GE; n = 15; idade: 29 ± 9,08 anos; IMC: 23,57 ± 4,33 kg/m2) ou para um grupo controle (GC; n = 15; idade: 33,17 ± 12,8 anos, IMC: 22,89 ± 5,68 kg/m2). O GE realizou um programa de treinamento aeróbico em cicloergômetro (57% a 67% da frequência cardíaca máxima) por 30 minutos, cinco dias por semana, totalizando 20 sessões. A análise de cortisol (método quimioluminescente) e serotonina (cromatografia líquida de alta eficiência) foi realizada antes e depois do teste em ambos os grupos. O nível de significância foi de p < 0,05. Resultados Depois das sessões de exercício, o GE mostrou redução significativa do nível de cortisol (Δ = -5,68 mcg/dl%, p < 0,0001) e aumento significativo do nível de serotonina (Δ = 47,63 ng/ml, p = 0,015) em comparação com o GC. Conclusão O programa de treinamento aeróbico foi efetivo para a redução dos níveis de cortisol e aumento dos níveis de serotonina em pacientes esquizofrênicos. Nível de evidência I; Estudo clínico randomizado.

RESUMEN Introducción Las personas con esquizofrenia tienden a tener altos niveles de cortisol y cambios en el mecanismo serotoninérgico. Sin embargo, los efectos del ejercicio aeróbico sobre los niveles de cortisol y serotonina en pacientes esquizofrénicos no están bien establecidos. Objetivos Evaluar los efectos de un programa de entrenamiento aeróbico sobre los niveles de serotonina y cortisol en pacientes esquizofrénicos internados. Métodos Treinta individuos esquizofrénicos fueron asignados aleatoriamente a un grupo de ejercicio (GE; n = 15; edad: 29 ± 9,08 años; IMC: 23,57 ± 4,33 kg/m2) o a un grupo control (GC; n = 15; edad: 33,17 ± 12,8 años, IMC: 22,89 ± 5,68 kg/m2). GE realizó un programa de entrenamiento aeróbico en cicloergómetro (57% a 67% de la frecuencia cardíaca máxima) durante 30 minutos, cinco días a la semana, totalizando 20 sesiones. El análisis de cortisol (método quimioluminiscente) y serotonina (cromatografía líquida de alta resolución) se realizó antes y después de la prueba en ambos grupos. El nivel de significación fue p < 0,05. Resultados Después de las sesiones de ejercicio, el GE mostró una reducción significativa en el nivel de cortisol (Δ = -5,68 mcg/dl٪, p < 0,0001) y un aumento significativo en el nivel de serotonina (Δ = 47,63 ng/ml, p = 0,015) en comparación al GC. Conclusión El programa de entrenamiento aeróbico fue efectivo para reducir los niveles de cortisol y aumentar los niveles de serotonina en pacientes esquizofrénicos. Nivel de evidencia I; Estudio clínico aleatorizado.

Analysis of pain symptoms, flexibility and hydroxyproline concentration in individuals with low back pain submitted to Global Postural Re-education and stretching.

Aim: To evaluate pain, flexibility and hydroxyproline (HP) urinary levels in patients with nonspecific low back pain submitted to Global Postural Re-education (GPR) and stretching. Materials & methods: 39 individuals who reported low back pain were randomly assigned to a group submitted to GPR (GPRG) or stretching exercises (SG) for 8 weeks. Pain and flexibility were assessed using the Borg CR10 scale and goniometry, respectively. Results: The GPR group showed a significant reduction in the HP levels and significant improvements in flexibility after the intervention when compared with SG. Both groups presented a significant reduction in HP and pain after the intervention. Conclusion: Both interventions were effective in the treatment of low back pain. However, the GPR method presented better responses than stretching.

A systematic review of load control in football using a Global Navigation Satellite System (GNSS)

Abstract Aim: This systematic review aimed to evaluate various Global Navigation Satellite Systems (GNSS) receivers, based on the frequency applied, the number of satellites available, and the dilution of precision (DOP) presented to measure football player load control. Method: The systematic review followed the PRISMA recommendations. Four hundred and eighty-five articles were selected from two online databases (Scopus and ISI Web of Science) over five years, with 21 studies selected for this review. In these studies, the GNSS frequency ranged from 5 to 18 Hz, with 10 Hz as the most commonly used frequency. Results: Of the 21 selected studies, 20 presented the ideal horizontal dilution of precision (HDOP), and the number of satellites available varied from 5 to 20. There was no consensus on defining speed, acceleration, or deceleration zones. Conclusion: There was no uniformity in data collected from the devices. Most GNSS receivers do not adopt the international system of units (SI).

Dermatoglyphic traits of brazilian golfers / Traços dermatoglíficos dos golfistas brasileiros

ABSTRACT Played all over the world, golf has gained popularity, for it is a sport that depends on individual abilities. For this reason the search for tools that aim to seek and guide its respective talented players has become very important. Therefore, this study had the objective of comparing the distribution of the dermatoglyphic indicators of high performance golfers and of a group control of non-athletes. The sample was composed of 46 individuals with paired age and gender, divided into two groups: the Group Golf (GG), composed of 23 golfers, and the Group Control (GC), composed of 23 individuals control randomly selected. The golfers, part of the Project Golf Brazil of the Brazilian Golf Confederation, were between 11 and 21 years old. The results demonstrated that the number of lines in the pattern was of six possible variables of fingerprint (MESQL1, MESQL2, MESQL4, MESQL5, SQTLE, SQTL) is significantly higher in the golfers (GG) when compared to the group control (GC). When observed the qualitative variables, i. e., the pattern type, significant diferences where observed between the groups, since the golfers (GG) presented more Radial Loops (RL) in MDT5 when compared to the group control (GC). The results found in this study demonstrated that the dermatoglyphic profile of high performance golfers differ from the non-athlete population.

RESUMO Jogado em todo o mundo, o golfe está ganhando popularidade, sendo um esporte que depende das habilidades individuais, tornando-se importante a busca por ferramentas que visem buscar e orientar seus respectivos talentos. O presente estudo teve por objetivo comparar a distribuição dos indicadores dermatoglíficos de golfistas de alto rendimento e de um grupo controle de não atletas. A amostra foi composta por 46 indivíduos com idade e sexo pareados, divididos em dois grupos: o Grupo Golf (GG), composto por 23 golfistas e o Grupo Controle (GC), composto por 23 indivíduos controle aleatoriamente selecionados. Os golfistas, parte do Projeto Golf Brasil da Confederação Brasileira de Golfe, tinham idade entre 11 e 21 anos. Os resultados demonstram que o número de linhas no padrão de seis possíveis variáveis de impressão digital (MESQL1, MESQL2, MESQL4, MESQL5, SQTLE, SQTL) é maior nos golfistas (GG) quando comparado ao grupo controle (GC). Quando observadas as variáveis qualitativas, ou seja, o tipo de figura, observaram-se diferenças significativas entre os grupos, visto que os Golfistas (GG) apresentaram maior quantidade de Presilha Radial (LR) no MDT5 quando comparados ao grupo controle (GC). Os resultados encontrados neste estudo demonstraram que o perfil dermatoglífico de golfistas de alto rendimento difere da população não atleta.

Análise do exercício agachamento com e sem o uso de physioball e banda elástica em diferentes intensidades / Analysis of the squat exercise with and without physioball and elastic band in different intensities

RESUMO O objetivo do presente estudo foi analisar a atividade mioelétrica (EMG), o tempo sob tensão (TST) e a projeção dos joelhos no exercício agachamento sem o uso de implementos (SI) e com o uso de physioball (PH) e banda elástica (BE) em diferentes intensidades de esforço. Dez homens realizaram o exercício nos três protocolos com a intensidade de 50 e 100% de 10 RM. A distância entre joelhos no protocolo controle (51,25cm) foi menor quando comparada com o SI 50% (84,38cm; p < 0,001), com o SI 100% (88,80cm; p < 0,001) e com BE 100% (67,41cm; p = 0,014). A distância entre os joelhos também foi menor para os protocolos PH 100% (53,10cm; p < 0,001) e BE 100% (67,41cm; p < 0,001) comparada ao SI 100% (88,80cm). O Vasto Medial Oblíquo (VMO) apresentou maior ativação nos protocolos SI 50% (p = 0,035) e PH 50% (p = 0,028) quando comparados ao protocolo BE 50%. A realização do agachamento com cargas submáximas parece aumentar e diminuir a ativação do VMO quando realizado com PH e BE, respectivamente.

ABSTRACT The objective of the present study was to analyze the myoelectric activity (EMG), the time under tension (TST) and the knee projection in the squat exercise without the use of implements (SI) and with the use of physioball (PH) and elastic band (EB) at different intensities of effort. Ten men performed the exercise in the three protocols with the intensity of 50 and 100% of 10 RM. The distance between knees in the control protocol (51.25 cm) was lower when compared to SI 50% (84.38 cm, p <0.001), with SI 100% (88.80 cm, p <0.001) and with EB 100% (67.41cm, p = 0.014). The distance between the knees was also lower for the protocols PH 100% (53.10cm, p <0.001) and EB 100% (67.41, p <0.001) compared to the SI 100% (88.80 cm) protocols. The Vasto Medial Oblique (VMO) presented greater activation in the SI 50% protocols (p = 0.035) and PH 50% (p = 0.028) when compared to the EB 50% protocol. The accomplishment of squatting with submaximal loads seems to increase and decrease the activation of VMO when performed with physioball and BE, respectively.

Pilates training induces changes in the trunk musculature of adolescents / Treinamento com pilates induz alterações na musculatura do tronco de adolescentes / Entrenamiento de pilates induce cambios en la musculatura del tronco de adolescentes

ABSTRACT Introduction The Pilates Method may be an appropriate form of exercise for improving trunk muscle strength, which can be a predictor of pain and musculoskeletal problems. Objective The objective of this study was to assess the effects of the Pilates Method on muscle strength and endurance of the extensor and flexor muscles of the trunk in a group of adolescents. Methods The sample consisted of 101 high-school students divided into two groups: an experimental group (EG=81) and a control group (CG=20). The intervention was carried out twice a week for six weeks. Each session lasted 55 minutes, and was divided into three parts: warm-up, main part, and cool down. Muscle strength was assessed by the Sörensen Test and the Bench Trunk-curl Test. The paired sample T-test, the T- test for independent samples, and Pearson's correlation coefficient were applied. The size of the effect (d) was determined. Results The EG showed significant improvements in both tests (+34.77 points; +18.55 points, respectively). No changes were observed in the CG. The effect size was high (d>1.15) for both tests, which means that the results were improved in a large proportion of the participants. The control group showed a decline in strength of the trunk musculature. In the experimental group, both boys and girls showed significant improvements in both tests. This strength increase was enhanced for a large proportion of boys and girls (d>1.15). The effect size was high (d>1.15) for both tests and for both sexes. Conclusion Six-weeks after implementing the Pilates Method in Physical Education lessons, the muscle strength of the flexor and extensor muscles of the trunk in adolescents was improved. Level of Evidence II; Therapeutic studies-Investigation of treatment results.

RESUMO Introdução O método Pilates pode ser uma forma adequada de exercício para melhorar a força dos músculos do tronco, que podem ser um preditor de dor e problemas musculoesqueléticos. Objetivo O objetivo deste estudo foi avaliar os efeitos do método Pilates sobre a força muscular e resistência dos músculos extensores e flexores do tronco em um grupo de adolescentes. Métodos A amostra foi composta de 101 estudantes do ensino médio divididos em dois grupos: um grupo experimental (GE = 81) e um grupo controle (GC = 20). A intervenção foi realizada duas vezes por semana durante seis semanas. Cada sessão durou 55 minutos e foi dividida em três partes: aquecimento, parte principal e relaxamento. A força muscular foi avaliada com o teste de Sörensen e o teste de flexão abdominal com apoio de pernas. Para a análise de dados, foram empregados o teste t de amostras pareadas, o teste t para amostras independentes e o coeficiente de correlação de Pearson. O tamanho do efeito (d) foi determinado. Resultados O GE apresentou melhoras significativas em ambos os testes (+34,77 pontos; +18,55 pontos, respectivamente). Não foram observadas alterações no GC. O tamanho do efeito foi alto (d > 1,15) para ambos os testes, o que significa que os resultados foram melhores em uma grande proporção de participantes. O grupo controle apresentou declínio da força muscular do tronco. No grupo experimental, meninos e meninas apresentaram melhoras significativas em ambos os testes. Esse aumento de força foi atingido por uma alta proporção de meninos e meninas (d > 1,15). O tamanho do efeito foi alto (d > 1,15) nos dois testes e sexos. Conclusão Seis semanas depois da implantação do método Pilates nas aulas de educação física, a força muscular dos flexores e extensores do tronco aumentou nos adolescentes. Nível de Evidência II; Estudos Terapêuticos - Investigação dos resultados do tratamento.

RESUMEN Introducción El método Pilates puede ser una forma apropiada de ejercicio para la mejora de la fuerza de la musculatura del tronco, la cual puede ser un predictor de dolor y problemas musculoesquéticos. Objetivo El objetivo de este estudio fue evaluar los efectos del método Pilates sobre la fuerza muscular y la resistencia de los músculos extensores y flexores del tronco en un grupo de adolescentes. Métodos La muestra consistió en 101 estudiantes de secundaria divididos en dos grupos: un grupo experimental (GE = 81) y un grupo control (GC = 20). La intervención se realizó dos veces a la semana durante seis semanas. Cada sesión duró 55 minutos y se dividió en tres partes: calentamiento, parte principal y relajación. La fuerza muscular se evaluó mediante la prueba de Sörensen y la prueba de flexión abdominal con apoyo de piernas. Se aplicaron pruebas t de muestras pareadas t de muestras independientes y el coeficiente de correlación de Pearson. Se determinó el tamaño del efecto (d). Resultados El GE mostró mejoras significativas en ambas pruebas (+34,77 puntos; +18,55 puntos, respectivamente). No se observaron cambios en el GC. El tamaño del efecto fue alto (d > 1,15) para ambas pruebas, lo que significa que los resultados mejoraron en una gran proporción de participantes. El grupo control mostró una disminución en la fuerza de la musculatura del tronco. En el grupo experimental, tanto los niños como las niñas mostraron mejoras significativas en ambas pruebas. Este aumento de la fuerza fue mayor para una alta proporción de niños y niñas (d > 1,15). El tamaño del efecto fue alto (d > 1,15) para ambas pruebas y para ambos sexos. Conclusión Después de seis semanas de implementar el método Pilates en las clases de educación física, se mejoró la fuerza muscular de los flexores y extensores del tronco en adolescentes. Nivel de evidencia II; Tipo de estudio: Estudios terapéuticos - Investigación de resultados de tratamiento.

Effects of a moderate-to-high intensity resistance circuit training on fat mass, functional capacity, muscular strength, and quality of life in elderly: A randomized controlled trial.

Physical exercise is considered an important intervention for promoting well-being and healthy aging. The objective was to determine the effects of moderate-to-high intensity resistance circuit training on different parameters of body composition, functional autonomy, muscular strength and quality of life in elderly. A randomized controlled trial was conducted. A total of 45 subjects (27 females, 18 males) aged between 65-75 years old from Murcia (Spain) were divided by sex, and randomly to experimental group (n = 33, mean age 69 ± 3.2 years old) receiving 12 weeks of moderate-to-high intensity resistance circuit training and control group (n = 33, mean age 70 ± 4.1 years old) receiving no exercise intervention. Intra-group comparison, the experimental group showed a significant increment of lean body mass in women and men, which also presented a decrease of fat mass. Both sex presented a significant improve in functional autonomy, and significately higher values of muscular strength. But no changes were observed regarding quality of life in these groups. The control group did not show any differences pre and post-intervention in women, but in men presented an increment of body mass index and total weight post-intervention. No changes were showed in the other variables. Similar results were founded at inter-group comparison. The moderate-to-high intensity resistance circuit training showed increase in total lean body mass, improvements in functional capacity and significantly increase in upper and lower muscular strength in women and men. Progressive resistance circuit training should be promoted for the elderly as it has the potential to improve physical performance, thereby prolonging healthy independent aging.

Analysis of the relationship between personality traits and leadership characteristics of handball coaches of school teams in the state of Rio de Janeiro, Brazil

Aim: This study aimed to investigate the relationship between personality traits and leadership characteristics of handball coaches of school teams in the state of Rio de Janeiro, Brazil. Method: The sample was composed of 31 male individuals (41.71 ± 9.61 years) registered as coaches at the Federation of Student Sports of Rio de Janeiro (FEERJ). The data collection instruments were the Eysenck Personality Questionnaire, the Revised Leadership Scale for Sport and a sociodemographic questionnaire. Results: The Pearson correlation test showed a moderate negative correlation between working time as a coach and coach ages and Psychoticism (P); a moderate positive correlation between Extroversion (E) and Positive Feedback (PF) behavior; a moderate positive correlation between Neuroticism (N) and PF; a moderate positive correlation between N and autocratic behavior. The ANOVA revealed that coaches in the infantile category exhibited higher levels of N than those in the juvenile category. The Social Support (SS) given by the coaches of the junior categories presented superior levels to those of the juvenile category. The SS of the coaches of the infantile category showed higher levels than those of the juvenile category. Conclusion: It was concluded that certain personality traits are associated with the leadership characteristics of the investigated coaches.(AU)