School of Medicine, University of Pittsburgh, Pittsburgh, USA.
Eur J Appl Physiol. 2022 Nov;122(11):2427-2435. doi: 10.1007/s00421-022-05026-x. Epub 2022 Aug 20.
In sports requiring multiple short bouts of high-intensity exertion, recovery while off the field is an important part of being an effective competitive athlete. This study investigated the potential of vibroacoustic stimulation to aid recovery from athletic stress.
University of Pittsburgh club and varsity athletes (n = 22) pedaled on a stationary bike strenuously, followed by a period of recovery accompanied by vibration using a wearable transducer. Subjective and physiological (skin conductance responses and cardiac measures) were used to determine the extent of recovery with frontal electroencephalographic (alpha/theta) measures indexing brain reactivity.
Vibrations rated as the most calming by each participant were associated with increased high-frequency heart-rate variability, representing parasympathetic tone, particularly in athletes most affected by pedaling. Yet, EEG markers, while related to subjective recovery, were not associated with physiological change.
This work provides support for the idea that vibration, which is subjectively rated as calming, could affect physiological recovery from physical stressors, at least for those individuals whose physiology is affected by exertion. This is likely through direct effects on physiology rather than "top down" effects on the brain.
在需要多次短时间高强度运动的运动项目中，在场下恢复是成为一名高效竞技运动员的重要组成部分。本研究调查了声电刺激在帮助运动员从运动压力中恢复的潜力。
匹兹堡大学的俱乐部和校队运动员（n=22）在固定自行车上剧烈地蹬车，然后在佩戴的换能器的振动下进行一段时间的恢复。使用皮肤电反应和心脏测量等主观和生理指标（皮肤电导反应和心脏测量）来确定恢复的程度，前额脑电图（阿尔法/西塔）指标则反映大脑反应性。
每个参与者评价最能放松的振动与高频心率变异性的增加有关，代表副交感神经活动，尤其是在那些受蹬车影响最大的运动员中。然而，脑电图标志物虽然与主观恢复相关，但与生理变化无关。
这项工作为这样一种观点提供了支持，即振动（被主观评价为放松）可能会影响身体应激后的生理恢复，至少对那些因运动而受到生理影响的人来说是这样。这可能是通过对生理的直接影响，而不是通过对大脑的“自上而下”的影响。
