Walking to the beat of different drums: Practical implications for the use of acoustic rhythms in gait rehabilitation
Walking to the beat of different drums: Practical implications for the use of acoustic rhythms in gait rehabilitation
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DOI：
10.1016/j.gaitpost.2011.03.001
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发表时间：
2011-04-01
期刊：
影响因子：
2.4
通讯作者：
Beek, Peter J.
中科院分区：
文献类型：
--
作者：
Roerdink, Melvyn;Bank, Paulina J. M.;Beek, Peter J.
声节律常用于步态康复中，对各种步态特征具有正的瞬时和延长的传递效应。声节律的步态修正能力取决于步态与节拍的关系，这可以通过测量步态-运动协调的相对时间来评估。我们研究了20名健康老年人在节拍器节拍下行走时的运动协调性，起搏频率慢于、等于和快于他们喜欢的节奏。我们发现，需要更多的步骤来调整步态的节拍，更多的节拍器率偏离首选的节奏。此外，参与者会根据节拍器的速率，在不同程度上用脚步来预测节拍;克里思越快，相位提前或相位领先就越小。最后，在脚步和节拍之间的相对时间的变化是较小的节拍器率接近首选的节奏，反映了优越的上级运动协调。这些意见有三个实际意义。首先，考虑到将步态调整到节拍所需的相当多的步数以及通常的短走道，声学刺激对步态特征的瞬时影响通常可能被低估。第二，脚步与节拍的系统性相位超前并不一定反映步态与节拍器耦合的能力降低。第三，声学节律改变步态的功效取决于节拍器速率。步态是最好的节拍器率附近的首选节奏的节拍。(C)2011爱思唯尔有限公司版权所有。
Acoustic rhythms are frequently used in gait rehabilitation, with positive instantaneous and prolonged transfer effects on various gait characteristics. The gait modifying ability of acoustic rhythms depends on how well gait is tied to the beat, which can be assessed with measures of relative timing of auditory-motor coordination. We examined auditory-motor coordination in 20 healthy elderly individuals walking to metronome beats with pacing frequencies slower than, equal to, and faster than their preferred cadence. We found that more steps were required to adjust gait to the beat, the more the metronome rate deviated from the preferred cadence. Furthermore, participants anticipated the beat with their footfalls to various degrees, depending on the metronome rate; the faster the tempo, the smaller the phase advance or phase lead. Finally, the variability in the relative timing between footfalls and the beat was smaller for metronome rates closer to the preferred cadence, reflecting superior auditory-motor coordination. These observations have three practical implications. First, instantaneous effects of acoustic stimuli on gait characteristics may typically be underestimated given the considerable number of steps required to attune gait to the beat in combination with the usual short walkways. Second, a systematic phase lead of footfalls to the beat does not necessarily reflect a reduced ability to couple gait to the metronome. Third, the efficacy of acoustic rhythms to modify gait depends on metronome rate. Gait is coupled best to the beat for metronome rates near the preferred cadence. (C) 2011 Elsevier B.V. All rights reserved.