As evidências atuais apontam benefícios da dieta vegetariana para a saúde humana. Contudo, a partir da adoção de práticas vegetarianas mais restritivas, confirmam-se os riscos à saúde. As dietas vegetarianas são caracterizadas pelo elevado consumo de carboidratos, fibras, magnésio, potássio, folato e antioxidantes, podendo apresentar deficiências em aminoácidos e ácidos graxos essenciais, cálcio, zinco, ferro e cobalamina. Pesquisas experimentais em humanos indicam que vegetarianos e não-vegetarianos apresentam capacidade aeróbica semelhante. Em relação ao desempenho em atividades de força e potência muscular, as pesquisas são escassas, mas as existentes não apontam diferenças significativas. Situações de risco cardiovascular têm sido confirmadas, devido ao provável quadro de hiperhomocisteinemia, em decorrência da baixa ingestão de cobalamina. As dietas vegetarianas são isentas de creatina, o que resulta em estoques musculares mais baixos nessa população. Possivelmente ocorrem alterações hormonais e metabólicas em resposta às dietas vegetarianas, como baixos níveis de testosterona e androstenediona. A função imune parece não ser prejudicada. Dessa forma, a prática de dietas vegetarianas apresenta-se compatível com a prática esportiva cotidiana, desde que bem planejada para evitar deficiências nutricionais.

Background: The anthropometric profile investigation is considered an important parameter to success in sports, however, there is no available study that investigated biometrics parameters in national level teenage players. In this way the aim of this paper was evaluate the anthropometric characteristics of adolescent tennis players by national level. Methods: The anthropometric and body composition evaluation were recognized on 30 adolescents practicing tennis with at least four years. The following parameters were evaluated: body composition, skin folds, perimeter and fat member. Results: The adolescent tennis players presented eutrophication status according to the mean BMI (kg/m 2 ) and values ​​within normality in relation to the percentage of fat (%). Conclusion: The results of the present study resembled the findings of literature on the anthropometric characteristics of amateur and professional tennis players.

Purpose: The purpose of this study was to evaluate the effects of energy drink ingestion on the performance of running performance in amateur runners with different levels of physical fitness. Material: Sixty healthy subjects were selected and randomized according to the level of physical fitness (Low: <29.9 ml.kg-1 .min-1 ; Moderate: 30-37.9 ml.kg-1 .min-1 ; and High: > 38 ml.kg-1 .min-1). Thereafter, they were further distributed in Placebo (27g glucose) and Energy Drink (27g glucose, 30g sodium, 1000mg taurine, 600mg glucuronolactone, 80mg caffeine, 50mg inositol, 16mg vitamin B3, 5mg vitamin B5, 1,3mg vitamin B2, 3 mg vitamin B6 and 2.4 mg vitamin B12), resulting in six groups according to physical fitness level such Placebo (

Aim: To determine how EMG, anthropometric, and psychological factors, and physical activity levels affect isokinetic peak torque performance (IPT) of multiple set exercise sessions. Methods: 20 participants (27±7 years old), classified as active (A=10) and inactive (I=10), performed 10x10:40secs of maximal unilateral knee flexions and extensions at 120o.s-1. The IPT, EMG, glucose, LDH, and lactate concentrations and perceptions of pain, effort, recovery. Results: Active volunteers showed higher muscularity (52±5 vs 47±4 cm; p<0.05), PTI (262±4 vs 185±4 Nm; p<0.05), relative lower drop in performance (14±2 vs 27±3% ; p<0.05), major MDF (83±1 vs 76±1 Hz; p<0.05), lower log -Fins5 (-12.9±0.3 vs -12.7 ± 0.3 Hz; p<0.05), smaller subjective perception of effort (14.8±0.3 vs 17.0±0.3) and higher subjective perception of recovery (14.2±0.2 vs 12.3±0.3). There was a significant interaction between relative fatigue and the number of sets (F=6.18; p<0.001). Stepwise multiple regressions revealed that subjective perception of recovery best explained the fatigue level generated in the active volunteers [fatigue level= 85.084-5255(SPR)] while for body mass was the best determinant for the inactive group [fatigue level = -21.560 +1.828(BMI)]. Conclusion: Data from the present analysis suggest that physically active individuals show higher torque development and a smaller fatigability index when compared to inactive individuals. Among the fatigue models studied, it is possible that alterations in biochemical components, psychophysiological and EMG are not sensitive to the direct influence of the fatigue dynamics protocol, both in active or inactive individuals.

Introduction: Aging is an irreversible physiological process that promote changes on biological parameters that culminate in limitations in the execution of daily tasks Objective: Evaluate the morphofunctional parameters of the elderly with and without depressive symptomatology. Methods: A cross-sectional descriptive exploratory study was carried out using the protocol of evaluation of the functional autonomy of the Latin American Development Group for Maturity (GDLAN Protocol), consisting of walking 10 meters (C10m), rising from the sitting position (LPS), rising from the ventral position (LPDV) and rising from a chair and moving around the house (LCLC). Results: No significant differences (p>0.05) were found between the groups on functional tests and anthropometric parameters, however, statistical differences (p = 0.001) were found between the groups in the general GDLAM index. Additionally, a positive correlation (r2 : 0.778; p<0.01) was observed between the scores of depressive symptomatology and the general index GDLAM indicating that impairments in functional fitness proportionally higher incidence of depressive symptoms. Conclusion: The results suggest that elderly women with a depressive symptom present lower physical fitness than elderly women without symptoms of depression, and that physical activity is necessary for both samples to contribute to the improvement of daily life activities.