Hormonal and metabolic responses to slow movement resistance exercise with different durations of concentric and eccentric actions
Hormonal and metabolic responses to slow movement resistance exercise with different durations of concentric and eccentric actions
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DOI：
10.1007/s00421-009-1075-9
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发表时间：
2009-07-01
影响因子：
3
通讯作者：
Takamatsu, Kaoru
中科院分区：
文献类型：
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作者：
Goto, Kazushige;Ishii, Naokata;Takamatsu, Kaoru
我们检查了激素对慢速运动的反应，包括同心运动（CON）和偏心运动（ECC）。9名男性进行膝关节伸展运动：(1)低强度运动，缓慢收缩（5-1，CON组5 s， ECC组1 s）；(2)低强度运动，ECC收缩缓慢（1 ~ 5 s, CON 1 s, ECC 5 s）；(3)低强度运动，CON和ECC缓慢收缩（3-3次，每次收缩3 s）；(4)正常速度下的高强度运动（1-1，每次收缩1秒）。5-1阶段的乳酸浓度显著高于1-5阶段（P < 0.05）。慢速运动显著提高血浆肾上腺素、血清生长激素和游离睾酮浓度（P < 0.05）。与正常运动试验相比，三次慢速运动试验后血清生长激素浓度升高幅度更大（1-1）。血清皮质醇浓度在5-1后显著高于1-5和1-1 （P < 0.05）。平均(V)超过dotO(2)在整个运动阶段（除以完成运动阶段的时间）在1-1中显著更高（P < 0.05），缓慢运动试验之间无显著差异。总之，低强度运动和慢速运动能显著增加合成代谢激素浓度，与完成CON和ECC动作的时间无关。相比之下，与ECC作用较慢的低强度运动相比，ECC作用较慢的低强度运动对乳酸和皮质醇的刺激较小。
We examined hormonal responses to slow movement exercise involving concentric (CON) and eccentric (ECC) actions. Nine men performed knee extension exercises: (1) low-intensity exercise with slow CON contractions (5-1; 5 s for CON and 1 s for ECC); (2) low-intensity exercise with slow ECC contractions (1-5; 1 s for CON and 5 s for ECC); (3) low-intensity exercise with slow CON and ECC contractions (3-3; 3 s for each contraction); and (4) high-intensity exercise at normal velocity (1-1; 1 s for each contraction). Lactate concentration was significantly higher after the 5-1 than after the 1-5 (P < 0.05). Slow movement exercises significantly raised the concentrations of plasma epinephrine, serum growth hormone, and free testosterone (P < 0.05). Serum growth hormone concentration increased to a greater extent after the three slow movement trials compared with the normal movement trial (1-1). However, serum cortisol concentration was significantly higher after the 5-1 than after the 1-5 and 1-1 (P < 0.05). Average (V) over dotO(2) throughout the exercise session (divided by the time to complete exercise session) was significantly higher in the 1-1 (P < 0.05), with no significant difference among the slow movement trials. In conclusion, low-intensity exercises with slow movement acutely increased anabolic hormone concentrations regardless of the time to complete CON and ECC actions. In contrast, low-intensity exercise with slower ECC action stimulated smaller changes in lactate and cortisol compared with low-intensity exercise with slower CON action.