Prior endurance exercise attenuates growth hormone response to subsequent resistance exercise
Prior endurance exercise attenuates growth hormone response to subsequent resistance exercise
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DOI：
10.1007/s00421-004-1296-x
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发表时间：
2005-06-01
影响因子：
3
通讯作者：
Takamatsu, K
中科院分区：
文献类型：
--
作者：
Goto, K;Higashiyama, M;Takamatsu, K
本研究考察了先前的耐力运动对随后的阻力运动的激素反应的影响。10名男性在循环测力仪上以最大摄氧量的50%运动60分钟，随后完成阻力训练（卧推和腿推，4组，最多重复10次，兴趣休息时间90秒）。或者，受试者在单独的一天执行该方案，之前的耐力运动限制为5分钟。分别于耐力运动前后、阻力运动后10、20、30分钟采血。在耐力和阻力运动前后测量的最大等距扭矩在试验之间没有显着差异。两组小鼠葡萄糖、乳酸、睾酮和皮质醇的浓度无显著差异，但游离脂肪酸（FFA）和生长激素（GH）在耐力运动60 min后显著升高（P < 0.01和P < 0.05）。相反，阻力运动后，生长激素在先前运动60 min后有所减弱（P < 0.05）。这些结果表明，生长激素对阻力运动的反应被先前的耐力运动减弱。这种影响可能是由于抗阻运动开始时血液中FFA浓度升高引起的。
This study examined the influence of prior endurance exercise on hormonal responses to subsequent resistance exercise. Ten males exercised on a cycle ergometer at 50% of maximal oxygen uptake for 60 min and subsequently completed a resistance exercise (bench and leg press, four sets at ten repetitions maximum with an interset rest period of 90 s). Alternatively, the subjects performed the protocol on a separate day with prior endurance exercise limited to 5 min. Blood was obtained before and after the endurance exercise, and 10, 20, and 30 min after the resistance exercise. Maximal isometric torque measured before and after endurance and resistance exercises showed no significant difference between trials. No significant difference was seen in the concentrations of glucose, lactate, testosterone, and cortisol between the trials, but free fatty acids (FFA) and growth hormone (GH) increased (P < 0.01 and P < 0.05, respectively) after 60 min of endurance exercise. Conversely, after the resistance exercise, GH was attenuated by 60 min of prior exercise (P < 0.05). These results indicate that the GH response to resistance exercise is attenuated by prior endurance exercise. This effect might be caused by the increase in blood FFA concentration at the beginning of resistance exercise.