Cross-transfer effects of resistance training with blood flow restriction
Cross-transfer effects of resistance training with blood flow restriction
复制标题
DOI：
10.1249/mss.0b013e31815c6d7e
复制
发表时间：
2008-02-01
期刊：
影响因子：
--
通讯作者：
Ishii, Naokata
中科院分区：
文献类型：
--
作者：
Madarame, Haruhiko;Neya, Mitsuo;Ishii, Naokata
目的：本研究探讨了肌肉肥大促进效应是否在阻力训练中交叉传递，血流限制训练已被证明引起强烈的内分泌激活。方法：15名未经训练的男性被随机分为闭塞训练组（OCC，N=8）和常规训练组（NOR，N=7）。两组都进行了相同的单侧手臂运动（手臂弯曲），最大重复次数（1 RM）为50%，无闭塞（三组，10次重复）。随机选择优势臂或非优势臂进行训练（OCC-T，NOR-T）或作为对照（OCC-C，NOR-Q）。在手臂运动后，OCC进行血流限制的腿部运动（1 RM的30%，三组，15-30次重复），而NOR进行相同的腿部运动而不闭塞。每周进行两次训练，共10周。在一组单独的实验中，在具有（N=5）和不具有（N=5）闭塞的相同腿部锻炼后测量血液激素浓度的急性变化。结果如下：OCC-T组肘屈肌横截面积（CSA）和等长力矩显著增加，而OCC-C、NOR-T和NOR-C组无显著变化。股肌CSA和等长扭矩在OCC组显著增加，而NOR组无显著变化。去甲肾上腺素浓度显示出显着较大的增加后，腿部运动与闭塞比运动后，没有闭塞，虽然生长激素和睾酮浓度并没有表现出显着差异，这两种类型的运动。结论：结果表明，低强度的阻力训练增加肌肉的大小和力量时，结合阻力运动与血流限制的其他肌肉群。这表明任何循环因素都参与了运动对肌肉大小的这种远程影响。
Purpose: This study investigated whether muscle hypertrophy-promoting effects are cross-transferred in resistance, training with blood flow restriction, which has been shown to evoke strong endocrine activation. Methods: Fifteen untrained men were randomly assigned into the occlusive training group (OCC, N=8) and the normal training group (NOR, N=7). Both groups performed,the same unilateral arm exercise (arm curl) at 50% of one-repetition maximum (1RM) without occlusion (three sets, 10 repetitions). Either the dominant or nondominant arm was randomly chosen to be trained (OCC-T, NOR-T) or to serve as a control (OCC-C, NOR-Q. After the arm exercise, OCC performed leg exercise with blood flow restriction (30% of 1RM, three sets, 15-30 repetitions), whereas NOR performed the same leg exercise without occlusion. The training session was performed twice a week for 10 wk. In a separate set of experiments, acute changes in blood hormone concentrations were measured after the same leg exercises with (N=5) and without (N=5) occlusion. Results: Cross-sectional area (CSA) and isometric torque of elbow flexor muscles increased significantly in OCC-T, whereas no significant changes were observed in OCC-C, NOR-T, and NOR-C. CSA and isometric torque of thigh muscles increased significantly in OCC, whereas no significant changes were observed in NOR. Noradrenaline concentration showed a significantly larger increase after leg exercise with occlusion than after exercises without occlusion, though growth hormone and testosterone concentrations did not show significant differences between these two types of exercises. Conclusion: The results indicate that low-intensity resistance training increases muscular size and strength when combined with resistance exercise with blood flow restriction for other muscle groups. It was suggested that any circulating factor(s) was involved in this remote effect of exercise on muscular size.