La activación psicofisiológica en situaciones de competición en jugadores de bádminton / A ativação psicofisiológica em situações de competição em jugadores de bádminton / The psychophysiological activation in competition situations in badminton players

Diversas investigaciones demuestran la importancia de la relación del nivel de activación con el rendimiento deportivo. El objetivo fue analizar el nivel de activación psicofisiológica de la acción de saque y su efecto en el rendimiento, durante situaciones simuladas de competición. Participaron 30 jugadores de bádminton (M= 23.7 años, DE= 7.52), divididos por nivel de rendimiento: alto nivel de habilidad (mujeres=5, hombres=10) y bajo nivel de habilidad (mujeres=4, hombres=11). Variable independiente: simulación de competición con menor y mayor exigencia. Variable dependiente: nivel de activación psicofisiológica, subjetiva y rendimiento. No hubo diferencias significativas en electromiografía y conductancia de la piel por las diferentes condiciones, pero si en la temperatura periférica y la activación subjetiva. El nivel de activación psicofisiológica tuvo un incremento por las acciones, pero no fue significativo. Además, que la simulación imaginando situaciones de partido, es posible que no fue suficiente para generar diferencias significativas por las condiciones. (AU)

Various investigations demonstrate the importance of the relationship between the level of activation and sports performance. The objective was to analyze the level of psychophysiological activation of the serve action and its effect on performance during simulated competition situations. Thirty badminton players participated (M= 23.7 years, SD = 7.52), divided by performance level: high skill level (women=5, men=10) and low skill level (women=4, men=11). Independent variable: competition simulation with lower and higher demand. Dependent variable: level of psychophysiological and subjective activation and performance. There were no significant differences in electromyography and skin conductance for the different conditions, but there were significant differences in peripheral temperature and subjective arousal. The level of psychophysiological activation had an increase due to the actions, but it was not significant. In addition, that the simulation imagining match situations, it is possible that it was not enough to generate significant differences due to the conditions. (AU)

Várias investigações demonstram a importância da relação entre o nível de ativação e o desempenho esportivo. O objetivo foi analisar o nível de ativação psicofisiológica da ação de saque e seu efeito no desempenho durante situações simuladas de competição. Participaram 30 jogadores de badminton (M= 23,7 anos, DP = 7,52), divididos por nível de desempenho: alto nível de habilidade (mulheres=5, homens=10) e baixo nível de habilidade (mulheres=4, homens=11). Variável independente: simulação de competição com menor e maior demanda. Variável dependente: nível de ativação e desempenho psicofisiológico e subjetivo. Não houve diferenças significativas na eletromiografia e condutância da pele para as diferentes condições, mas houve diferenças significativas na temperatura periférica e excitação subjetiva. O nível de ativação psicofisiológica teve aumento devido às ações, mas não foi significativo. Além disso, que a simulação imaginando situações iguais, é possível que não tenha sido suficiente para gerar diferenças significativas devido às condições. (AU)

Effects of instability versus traditional resistance training on strength, power and velocity in untrained men.

The purpose of this study was compare the effects of a traditional and an instability resistance circuit training program on upper and lower limb strength, power, movement velocity and jumping ability. Thirty-six healthy untrained men were assigned to two experimental groups and a control group. Subjects in the experimental groups performed a resistance circuit training program consisting of traditional exercises (TRT, n = 10) or exercises executed in conditions of instability (using BOSU® and TRX®) (IRT, n = 12). Both programs involved three days per week of training for a total of seven weeks. The following variables were determined before and after training: maximal strength (1RM), average (AV) and peak velocity (PV), average (AP) and peak power (PP), all during bench press (BP) and back squat (BS) exercises, along with squat jump (SJ) height and counter movement jump (CMJ) height. All variables were found to significantly improve (p <0.05) in response to both training programs. Major improvements were observed in SJ height (IRT = 22.1%, TRT = 20.1%), CMJ height (IRT = 17.7%, TRT = 15.2%), 1RM in BS (IRT = 13.03%, TRT = 12.6%), 1RM in BP (IRT = 4.7%, TRT = 4.4%), AP in BS (IRT = 10.5%, TRT = 9.3%), AP in BP (IRT = 2.4%, TRT = 8.1%), PP in BS (IRT=19.42%, TRT = 22.3%), PP in BP (IRT = 7.6%, TRT = 11.5%), AV in BS (IRT = 10.5%, TRT = 9.4%), and PV in BS (IRT = 8.6%, TRT = 4.5%). Despite such improvements no significant differences were detected in the posttraining variables recorded for the two experimental groups. These data indicate that a circuit training program using two instability training devices is as effective in untrained men as a program executed under stable conditions for improving strength (1RM), power, movement velocity and jumping ability. Key PointsSimilar adaptations in terms of gains in strength, power, movement velocity and jumping ability were produced in response to both training programs.Both the stability and instability approaches seem suitable for healthy, physically-active individuals with or with limited experience in resistance training.RPE emerged as a useful tool to monitor exercise intensity during instability strength training.