Effect of resistance exercise with slow movement, and elucidation of the mechanism

慢速抗阻运动的效果及其机制的阐明

• 批准号: 17300202
• 负责人: TAKAMATSU Kaoru
• 金额: $ 8.83万
• 依托单位: University of Thukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17300202/
• 关键词: resistance exercise; slow lift; noradrenaline; free testosterone; 成長ホルモン; テストステロン; 最大筋力; 筋損傷

This study examined the effects of different exercise duration of concentric and eccentric actions during resistance exercise with slow movement on hormonal responses. Nine adult men performed following four trials on separate days.・Low-intensity resistance exercise with slow movement (5s for lifting action, 1 s for lowering action; 5-1 trial)・Low-intensity resistance exercise with slow movement (Is for lifting action, 5 s for lowering action, 1-5 trial)・Low-intensity resistance exercise with slow movement (3s for lifting action, 3 s for lowering action, 3-3 trial)High-intensity resistance exercise with normal movement (Is for lifting action, Is for lowering action, 1-1 trial)Resistance exercise consisted of 4 sets of bilateral knee extension. Blood samples were collected to determine blood hormone concentrations. Oxygen uptake and heart rate were also measured during each set of exercise and rest periods between sets.The results showed that total work volume throughout four sets of exercise was significantly greater in the 1-1 trial than other three trials. Among the trials using slow lifting, 1-5 trial showed a highest work volume, with significant difference between 1-5 and 5-1 trials. Blood lactate concentration after exercise showed significantly greater values in the 1-1 and 5-1 trials than in the 1-5 trial No significant difference was observed in the exercise-induced increases in hormone concentrations among the trials, but 1-5 trial showed smaller responses of noradrenalin and free testosterone. In addition, 1-1 and 5-1 trials showed greater values of oxygen uptake and heart rate. The exercise-induced strength loss showed no significant difference among the trials.These results indicate that slow-lifting exercise with longer duration of concentric phase augments exercise-induced metabolic stress. Alternatively, the exercise with longer duration of eccentric phase shows smaller secretions of noradrenalin and free testosterone, and respiratory responses.

这项研究考察了缓慢运动阻力运动中不同运动持续时间的同心和离心动作对荷尔蒙反应的影响，九名成年男性在不同的日子进行了四次试验。 ・低强度缓慢运动阻力运动（举重动作 5 秒，下降动作 1 秒；5-1 次尝试）・缓慢运动的低强度阻力运动（提升动作，下降动作 5 秒，1-5 次尝试）・低强度阻力运动慢速运动（举起动作 3 秒，放下动作 3 秒，3-3 次试验）正常运动的高强度阻力运动（举起动作，放下动作，1-1 次试验）阻力运动由 4 组组成双侧膝关节伸展时，还测量了每组运动期间和组间休息期间的血液激素浓度和心率。结果表明，四组运动中的总工作量明显更大。 1-1试验比其他三个试验中，1-5试验显示出最高的工作量，1-5和5-1试验之间的显着差异显示出运动后的血乳酸浓度显着更大的值。在 1-1 和 5-1 试验中，与在 1-5 试验中相比，在试验中运动引起的激素浓度增加没有观察到显着差异，但 1-5 试验显示去甲肾上腺素和游离睾酮的反应较小。加法，1-1 5-1 试验显示，运动引起的力量损失在试验中没有显着差异。这些结果表明，向心阶段持续时间较长的缓慢举重运动会增强运动引起的代谢。或者，离心阶段持续时间较长的运动显示去甲肾上腺素和游离睾酮的分泌较少，呼吸反应也较小。