Department of Athletic Performance, National Taiwan Normal University, Taipei, Taiwan.
J Strength Cond Res. 2012 Dec;26(12):3349-57. doi: 10.1519/JSC.0b013e31824e0eb1.
The purpose of this study was to investigate the effects of 8-week whole-body vibration (WBV) training on running economy (RE) and power performance. Twenty-four male collegiate athletes were recruited and randomly assigned to experimental (WBV) and placebo (PL) groups. The WBV subjects performed semisquat vibration training (30 Hz, ±1-2 mm, 3 times per week), whereas PL subjects performed identical training without vibration. The isometric maximum voluntary contraction tests were used to evaluate maximal isometric force (F(max)) and rate of force development (RFD) of lower extremities, before and after the intervention, and RE was measured on a level treadmill at 3 velocities (2.68, 3.13, and 3.58 m·s(-1)). The F(max) of the lower leg (plantar flexion, from 80.8 ± 24.5 to 99.0 ± 33.9 N·m, p < 0.05, η(2) = 0.567; dorsiflexion, from 38.1 ± 6.5 to 43.0 ± 7.7 N·m, p < 0.05), and the RFD of 0-200 milliseconds during plantar flexion (from 186.0 ± 69.2 to 264.6 ± 87.2 N·m·s(-1), p < 0.05, η(2) = 0.184) were significantly increased in the WBV group after training. The averaged RE values for the 3 running velocities were significantly improved after WBV training (pretraining vs. posttraining, 4.31 ± 0.33 vs. 4.65 ± 0.34 m·ml(-1)·kg(-1), p = 0.001, η(2) = 0.654); however, no significant differences were found in the PL group (pretraining vs. posttraining, 4.18 ± 0.26 vs. 4.26 ± 0.44 m·ml(-1)·kg(-1), p = 0.476). The WBV training significantly improved RE at selected speeds (∼5.0-8.5%, p < 0.05). These results indicated that short-term WBV training could be an effective stimulus to enhance RE and lower extremity power performance in competitive athletes.
本研究旨在探讨 8 周全身振动（WBV）训练对跑步经济性（RE）和功率表现的影响。招募了 24 名男性大学生运动员，并将其随机分配到实验组（WBV）和安慰剂组（PL）。WBV 组进行半蹲振动训练（30 Hz，±1-2 mm，每周 3 次），而 PL 组进行相同的无振动训练。在干预前后，使用等长最大自愿收缩测试评估下肢的最大等长力（F(max)）和力发展率（RFD），并在水平跑步机上以 3 种速度（2.68、3.13 和 3.58 m·s(-1)）测量 RE。小腿的 F(max)（跖屈，从 80.8 ± 24.5 到 99.0 ± 33.9 N·m，p < 0.05，η(2) = 0.567；背屈，从 38.1 ± 6.5 到 43.0 ± 7.7 N·m，p < 0.05）和跖屈时 0-200 毫秒的 RFD（从 186.0 ± 69.2 到 264.6 ± 87.2 N·m·s(-1)，p < 0.05，η(2) = 0.184）在 WBV 组训练后显著增加。3 种跑步速度的平均 RE 值在 WBV 训练后显著提高（训练前 vs. 训练后，4.31 ± 0.33 vs. 4.65 ± 0.34 m·ml(-1)·kg(-1)，p = 0.001，η(2) = 0.654）；然而，PL 组没有发现显著差异（训练前 vs. 训练后，4.18 ± 0.26 vs. 4.26 ± 0.44 m·ml(-1)·kg(-1)，p = 0.476）。WBV 训练显著提高了选定速度下的 RE（约 5.0-8.5%，p < 0.05）。这些结果表明，短期 WBV 训练可能是一种有效的刺激手段，可提高竞技运动员的 RE 和下肢功率表现。
