Does resistance training improve body image satisfaction among the elderly? A cross-sectional study

OBJECTIVE: This study aims to evaluate whether body image satisfaction improves with practice in resistance training in elderly women. METHODS: Forty women were selected and randomly divided into an untrained group (UN) group and a group trained in resistance exercises (RT). To evaluate body image satisfaction, the silhouette matching task was used. RESULTS: No differences were found between current (5.45±0.24) and ideal (4.7±0.12) silhouettes in the RT group. However, the UN group showed a significant difference (po0.01) between current (10.4±0.43) and ideal (5.6±0.26) silhouettes. The current silhouette was significantly different between the UN and RT groups (po0.002). However, the ideal silhouette value did not differ between them. Body satisfaction was present in 90% of the participants in the RT group, and the difference was 15% less than that in the UN group (x2 test, po0.001). CONCLUSION: Resistance training in elderly women can promote satisfaction with their body image

Effects of previous carbohydrate supplementation on muscular fatigue: double-blind, randomized, placebo-controlled crossover study

Abstract AIMS The aim of this study was to examine the effects of previous carbohydrate supplementation on high-volume resistance exercise performance METHODS Twenty males physically independent adults aged ≥18 years participated in a double-blind randomized placebo-controlled crossover study. Sixty minutes before the experimental protocol, each participant ingested 0,6 g.kg of body mass-1 of carbohydrate supplementation or placebo. Maximum voluntary isometric contraction tests were performed before and after the dynamic fatigue induction protocol consisting of 10 sets of 8 repetitions of right leg knee extensors at 120º s-1. RESULTS Lower decrement of the isometric peak torque (p<0,001) and of the rate of torque development (p<0,001) was observed in carbohydrate supplementation after the dynamic protocol. Both concentric and eccentric peak torque differed significantly (p<0,001) between carbohydrate supplementation and placebo treatments from the second set, although the slope of the force-repetitions curve was not different between them. Additionally, the carbohydrate supplementation resulted in a lower session rating of perceived exertion (p<0,05). CONCLUSIONS Previous carbohydrate supplementation attenuates muscle fatigue and internal load exercise in a high-volume isokinetic leg protocol

Description of training loads using whole body exercise during high-intensity-interval-training

OBJECTIVES: To describe external training load and internal training load through sets of a single session of high-intensity interval training (HIIT) body work. METHODS: Twenty male individuals (24±3 years) performed a HIIT body work protocol consisting of a single bout of exercise with 1:1 stimuli. The exercises used were 30 min in duration with “all-out” intensity. The exercises included jumping jacks, mountain climbers, burpees and squat jumps, totaling 20 min of exercise. During exercise, total movement capacity, blood lactate measurement, ratings of perceived exertion and recovery, training load and intensity were monitored. RESULTS: The single bout examined showed a total of 382±89 movements. Differences (p<0.01) in the total amount of movement for each exercise were noted, reflecting the difficulty of maintaining exercise over time. Increases in lactate concentrations (before: 0.98±0.16, after: 14.10±1.66; mmol/L) were found postexercise. Significant differences (p<0.01) were found after the fifth set, and the values for movement capacity remained higher than the values of the first set, demonstrating high load in a single session. No differences in ratings of perceived exertion (RPE) during the sets were found. However, the ratings of perceived recuperation from the second set were significantly (p<0.01) lower than those from the first set. CONCLUSIONS: The exercise protocol used in this study was of high intensity and produced large values for stress during performance, with increases recorded for the internal load indicators

Correlação entre o estilo de vida e o perfil antropométrico de jogadores de futebol americano

As características antropométricas são determinantes para a performance esportiva, especialmente em modalidades que exijam diferentes funções para cada jogador. Devido a essa especificidade, é importante conhecer como o estilo de vida interfere nos componentes do peso. Objetivo: Correlacionar o estilo de vida de jogadores de futebol americano à sua composição corporal. Materiais e métodos: Trata-se de um estudo transversal, onde foi avaliada a antropometria de jogadores de futebol americano do sexo masculino e aplicado o “questionário Estilo de Vida Fantástico” para determinar os padrões comportamentais. Discussão: O presente estudo mostrou que existe uma correlação significativa entre o estilo de vida do atleta e sua composição corporal, demonstrando que atletas com hábitos saudáveis possuem composição corporal mais próxima da desejada. Resultados: Foram avaliados 29 atletas de um time de Vinhedo-SP. As análises apontam que existe correlação positiva entre o comportamento individual e a composição corporal. Conclusão: o comportamento do atleta pode determinar sua composição corporal, fator que está diretamente ligado à performance esportiva. Determinar os hábitos dos atletas pode favorecer a criação de estratégias visando aumentar o rendimento do time.  ABSTRACT Correlation between lifestyle and the anthropometric profile of american football playersThe anthropometric characteristics are determinant for the sport performance, especially in modalities that require different functions for each player. Because of this specificity, it is important to know how lifestyle interferes with weight components. Objective: To correlate the lifestyle of American Football players with their body composition. Materials and methods: This is a cross-sectional study where the anthropometry of male football players was evaluated and the "Fantastic Lifestyle Questionnaire" was used to determine the behavioral patterns. Discussion: The present study showed that there is a significant correlation between the athlete's lifestyle and body composition, demonstrating that athletes with healthy habits have a body composition that is closer to the one desired. Results: 29 athletes from Vinhedo-SP team were evaluated. The analyzes indicate that there is a positive correlation between individual behavior and body composition. Conclusion: Athlete behavior can determine body composition, a factor that is directly related to sports performance. Determining athletes' habits can favor the creation of strategies to increase team performance