Acute Effects of Whole-Body Vibration on Peripheral Blood Flow, Vibrotactile Perception and Balance in Older Adults
Acute Effects of Whole-Body Vibration on Peripheral Blood Flow, Vibrotactile Perception and Balance in Older Adults
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DOI：
10.3390/ijerph17031069
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发表时间：
2020-02-01
影响因子：
--
通讯作者：
Tanabe, Tsuyoshi
中科院分区：
文献类型：
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作者：
Mahbub, M. H.;Hase, Ryosuke;Tanabe, Tsuyoshi
背景：全身振动(WBV)的非侵入性应用有可能改善老年人受损的外周循环、皮肤感觉和平衡。然而，相关研究经常应用高幅度的振动，并显示出相互矛盾和不确定的结果。因此，我们试图确定30名老年受试者暴露于ISO 2631-1(1997)定义的三种不同程度的WBV后，这些参数中的急性反应。方法：每个受试者随机接受4次干预(3次1分钟暴露，1分钟休息)：15、20或25赫兹的WBV，峰间位移4 mm，或对照条件。结果：在干预过程中和干预后，足背皮肤血流量在20和25 Hz暴露条件下均显著增加，且在25 Hz暴露条件下反应更明显，其幅度略高于推荐值。足底振动触觉在WBV暴露后显著增加，总体上在更高的振动频率下有更大的反应。相反，没有观察到WBV引起的平衡变化。结论：20赫兹的WBV，其幅度在推荐的限度内，可以有效地诱导外周血流的增强；然而，相同幅度的振动似乎不足以改善老年人的平衡。
Background: Non-invasive application of whole-body vibration (WBV) has the potential for inducing improvements in impaired peripheral circulation, cutaneous sensation and balance among older adults. However, relevant studies have frequently applied high magnitudes of vibration and show conflicting and inconclusive results. Therefore, we attempted to ascertain the acute responses in those parameters from exposure of thirty older subjects to WBV of three different magnitudes, defined according to ISO 2631-1 (1997). Methods: Each subject randomly underwent four sessions of intervention (three bouts of 1 min exposure with 1 min between-bout rests): WBV at 15, 20, or 25 Hz with a peak-to-peak displacement of 4 mm, or control condition. Results: Both during and after intervention, dorsal foot skin blood flow increased significantly under 20 and 25 Hz exposure conditions with greater responses under the latter condition, the magnitude of which slightly exceeded the recommended value. Plantar vibrotactile perception showed significant increases after WBV exposure with overall greater responses under higher frequencies of vibration. In contrast, no WBV-induced change in balance was observed. Conclusions: WBV at 20 Hz with a magnitude within the recommended limit can be effective in inducing enhancements in peripheral blood flow; however, the same magnitude of vibration seems insufficient in improving balance among older adults.