Endocrine responses to upper- and lower-limb resistance exercises with blood flow restriction
Endocrine responses to upper- and lower-limb resistance exercises with blood flow restriction
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DOI：
10.1556/aphysiol.97.2010.2.5
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发表时间：
2010-06-01
影响因子：
--
通讯作者：
Ishii, N.
中科院分区：
文献类型：
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作者：
Madarame, H.;Sasaki, K.;Ishii, N.
为了比较上肢（UL）和下肢（LL）肌肉对低强度阻力运动和血流限制（BFR）的内分泌反应，我们测量了血乳酸、血浆去甲肾上腺素和血清生长激素（GH）、睾酮，皮质醇和胰岛素样生长因子-I（IGF-I）在UL前后（二头肌卷曲和三头肌下压）和LL（腿伸展和腿卷曲）与BFR在9名男子（26.3 +/- 3.1岁）。在所有的练习中使用了一次重复最大值（1 RM）的30%的负荷，其中第一组30次重复，然后是第二组和第三组失败。在每个锻炼计划中，他们的上臂（UL）或大腿（LL）的近端部分由弹性带双侧压缩。UL和LL导致乳酸，去甲肾上腺素，GH，睾酮，皮质醇和IGF-I浓度显着增加时，与运动前的值相比。仅在血清GH浓度曲线下面积（AUC）中观察到UL和LL之间的显著差异，表明LL诱导的GH反应大于UL。LL后更大的GH分泌可能更有利于长期训练引起的肌肉肥大。
To compare endocrine responses to low-intensity resistance exercise with blood flow restriction (BFR) for upper-limb (UL) and lower-limb (LL) muscles, we measured blood lactate, plasma noradrenaline, and serum growth hormone (GH), testosterone, cortisol and insulin-like growth factor-I (IGF-I) before and after the UL (biceps curl and triceps press down) and LL (leg extension and leg curl) exercises with BFR in nine men (26.3 +/- 3.1 yr). The load of 30% of one-repetition maximum (1RM) was used in all the exercises, in which the first set of 30 repetitions was followed by the second and third sets to failure. In each exercise program, the proximal portions of their upper arms (UL) or thighs (LL) were compressed bilaterally by elastic belts. Both the UL and LL caused significant increases in lactate, noradrenaline, GH, testosterone, cortisol, and IGF-I concentrations when compared to the pre-exercise values. A significant difference between the UL and LL was observed only in the area under the curve (AUC) of serum GH concentration, indicating that the LL induced greater GH response than did the UL. The greater GH secretion following the LL may be more advantageous for muscle hypertrophy induced by a long-term training period.