RESUMO
The current study aimed to analyze the psychological alterations resulting from rapid weight loss in the mood states and burnout of male Brazilian jiu-jitsu athletes. For the purpose of this study, 31 Brazilian jiu-jitsu athletes participated, divided into two groups (RWLG: rapid weight loss group and CG: control group). Data collections were performed at three moments (1: baseline, before weight loss; 2: weigh-in, during the official competition; and 3: recovery, 7 to 10 days after the competition), with application of the Brunel Mood Scale (BRUMS) and Athlete Burnout Questionnaire (ABQ). Considering the outcomes, for body mass, the athletes from RWLG presented mean reductions of 3.5 kg (4.2% of the initial body mass). For mood states, both groups (RWLG and CG) presented a moment effect for tension and confusion, with higher levels during weigh-in compared to baseline and recovery (p < 0.05). For burnout, both groups showed low levels of burnout, with no effect of moment, group, or interaction in the analyses (p > 0.05). Based on these results, it is concluded that weight loss, in the magnitude performed in this study, did not generate an additional impact on mood or level of burnout in Brazilian jiu-jitsu athletes during a competitive process.
RESUMO
Introdução: Atualmente, vem crescendo a utilização de diferentes métodos de treinamento de força (TF) como drop-set e bi-set, com intuito de maximizar gasto energético (GE). Porém, não há evidências que comprovem este fato. Objetivos: Mensurar e comparar o gasto energético (GE) em sessões de TF empregando os métodos drop-set, bi-set e TF tradicional (TRAD). Métodos: Nove homens recreacionalmente ativos realizaram três protocolos de exercícios em dias distintos, separados por intervalos de uma semana. O drop-set e o TRAD seguiram ordem fixa de execução dos exercícios; o bi-set foi realizado com dois exercícios sem intervalo entre eles. Todos os protocolos foram desempenhados a 80% de 1RM e, durante as sessões de treinamento, foi mensurado o consumo de oxigênio (VO2) e o GE. Resultados: Os resultados indicam que, durante a sessão de treino, o método drop-set gerou maiores valores de VO2 (13,6 ± 6,8 > 11,2 ± 5,9 kg/ml/min), GE (5,2 ± 2,3 > 4,5 ± 2,3 kcal/min -1), frequência cardíaca (128 ± 27,1 > 113 ± 22,4 bpm -1) e razão de trocas gasosas (1,2 ± 0,2 > 1,1 ± 0,1) quando comparado ao bi-set e TRAD (p<0,05). Conclusão: Maiores valores de frequência cardíaca durante o treino e gasto calórico superior foram observados no TF realizado com o método drop-set em relação ao bi-set e TRAD.
Introduction: It is currently growing use of different strength training methods (ST) as a drop-set and bi-set, in order to maximize energy expenditure (EE). However, there is no evidence to prove this fact. Objective: The aim of this study was to compare the EE of training sessions of methods drop-set, bi-set and traditional ST (TRAD). Methods: Nine men recreationally assets had performed three protocols of exercises on different days separated by a break of week between each. The drop-set and the TRAD followed a fixed order of the exercises; the bi-set were two exercises without a break followed the other, forming combinations which were: squat-flexor and extensor chair - plantar flexion. All protocols were performed at 80% of 1RM and during the training sessions were measured oxygen consumption and the calorie expenditure. Results: The results indicate during the training session the drop-set promoted higher values of VO2 (13.6 ± 6.8> 11.2 ± 5.9 kg / ml / min), EE (5.2 ± 2.3 ± 4.5 ± 2.3 kcal / min-1), heart rate (128 ± 27.1> 113 ± 22.4 bpm-1) and gas exchange ratio (1.2 ± 0.2> 1.1 ± 0.1) when compared to bi-set and TRAD (p<0.05). Conclusion: Briefly, the incorporation of the protocol drop-set can benefit the practitioners that aim at maximizing the consumption of EE.
