Strength increase after whole-body vibration compared with resistance training
Strength increase after whole-body vibration compared with resistance training
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DOI：
10.1249/01.mss.0000069752.96438.b0
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发表时间：
2003-06-01
期刊：
影响因子：
--
通讯作者：
Verschueren, S
中科院分区：
文献类型：
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作者：
Delecluse, C;Roelants, M;Verschueren, S
目的：本研究的目的是调查和比较12周的全身振动训练和阻力训练对人类膝关节伸肌力量的影响。方法：67名未经训练的女性（21.4 +/- 1.8岁）参加了这项研究。全身振动组（WBV, N = 18）和安慰剂组（PL, N = 19）在振动平台上进行静态和动态膝伸肌锻炼。振动平台的加速度在2.28 ~ 5.09 g之间，而PL条件下仅为0.4 g。振动（35-40 Hz）导致肌电活动增加，但在PL条件下肌电信号保持不变。阻力训练组（RES, N = 18）通过动态压腿和伸腿运动（10-20 R-M）训练膝关节伸肌。所有训练组每周锻炼3次（-1）。对照组（CO, N = 12）不参加任何训练。通过电机驱动的测力仪测量前后、动态和弹道膝关节伸肌强度。爆炸强度是通过反向跳跃来确定的。结果：WBV组（16.6 +/- 10.8%;9.0 +/- 3.2%）和RES组（14.4 +/- 5.3%;7.0 +/- 6.2%）的膝关节等长和动态伸肌强度均显著升高（P < 0.001），而PL和CO组无显著升高（P < 0.05）。仅WBV组的反动作跳高（7.6 +/- 4.3%）显著提高（P < 0.001）。通过弹道试验测量，任何干预措施都没有对最大运动速度产生影响。结论：WBV及其引发的反身性肌肉收缩，有可能诱导未受过训练的女性膝关节伸肌的力量增加，其程度与中等强度的阻力训练相同。研究清楚地表明，WBV训练后力量的增加不能归因于安慰剂效应。
Purpose: The aim of this study was to investigate and to compare the effect of a 12-wk period of whole-body vibration training and resistance training on human knee-extensor strength, Methods: Sixty-seven untrained females (21.4 +/- 1.8 yr) participated in the study. The whole-body vibration group (WBV, N = 18) and the placebo group (PL, N = 19) performed static and dynamic knee-extensor exercises on a vibration platform. The acceleration of the vibration platform was between 2.28 g and 5.09 g, whereas only 0.4 g for the PL condition. Vibration (35-40 Hz) resulted in increased EMG activity, but the EMG signal remained unchanged in the PL condition. The resistance-training group (RES, N = 18) trained knee extensors by dynamic leg-press and leg-extension exercises (10-20 R-M). All training groups exercised 3X wk(-1). The control group (CO, N = 12) did not participate in any training. Pre- and postisometric, dynamic, and ballistic knee-extensor strength were measured by means of a motor-driven dynamometer. Explosive strength was determined by means of a counter-movement jump. Results: Isometric and dynamic knee-extensor strength increased significantly (P < 0.001) in both the WBV group (16.6 +/- 10.8%; 9.0 +/- 3.2%) and the RES group (14.4 +/- 5.3%; 7.0 +/- 6.2%), respectively, whereas the PL and CO group showed no significant (P > 0.05) increase. Counter-movement jump height enhanced significantly (P < 0.001) in the WBV group (7.6 +/- 4.3%) only. There was no effect of any of the interventions on maximal speed of movement, as measured by means of ballistic tests. Conclusions: WBV, and the reflexive muscle contraction it provokes, has the potential to induce strength gain in knee extensors of previously untrained females to the same extent as resistance training at moderate intensity. It was clearly shown that strength increases after WBV training are not attributable to a placebo effect.