Generalization of Gait Adaptation for Fall Prevention: From Moveable Platform to Slippery Floor
Generalization of Gait Adaptation for Fall Prevention: From Moveable Platform to Slippery Floor
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DOI：
10.1152/jn.91004.2008
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发表时间：
2009-02-01
影响因子：
2.5
通讯作者：
Pai, Y. C.
中科院分区：
文献类型：
--
作者：
Bhatt, T.;Pai, Y. C.
Bhatt T，派YC.预防跌倒的步态适应的推广：从可移动平台到光滑地板。神经生理学杂志101：948-957，2009年。首次发表于2008年12月10日; doi：10.1152/jn.91004.2008。一个人的能力转移获得的质量中心（COM）状态稳定性控制的改善，在日常条件下引起的滑倒，可以有深刻的理论和实践意义的跌倒预防。这项研究调查了这种泛化的程度。训练组（n = 8）最初经历了24次右侧滑动，顺序为阻塞和随机（从第一次未通知的新滑动，S-1到最后一次，S-24），这是由于在行走中释放低摩擦可移动平台造成的。然后，他们在油润滑的乙烯基地板表面（V-T）上行走时经历了一次突然的滑倒。对照组（n = 8）仅接受一次在同一光滑地板上的突然滑倒（V-C）。结果表明，V-T的平衡丧失和跌倒发生率与S-24相当。在这两个试验中，下降和平衡损失的发病率显着减少相比，S-1或V-C，导致COM状态稳定性的显着改善。观察到的泛化表明，COM稳定性的控制可以最佳地获得，以适应环境约束的变化，它可以广泛编码，容易修改的CNS内。由于这种机制，有可能在低摩擦可移动平台的帮助下获得的运动平衡技能可以转化为日常生活中遇到的抵抗福尔斯。
Bhatt T, Pai YC. Generalization of gait adaptation for fall prevention: from moveable platform to slippery floor. J Neurophysiol 101: 948-957, 2009. First published December 10, 2008; doi: 10.1152/jn.91004.2008. A person's ability to transfer the acquired improvements in the control of center of mass (COM) state stability to slips induced in everyday conditions can have profound theoretical and practical implications for fall prevention. This study investigated the extent to which such generalization could take place. A training group (n = 8) initially experienced 24 right-side slips in blocked-and-random order (from the 1st unannounced, novel slip, S-1 to the last, S-24) resulting from release of a low-friction moveable platform in walking. They then experienced a single unannounced slip while walking on an oil-lubricated vinyl floor surface (V-T). A control group (n = 8) received only one unannounced slip on the same slippery floor (V-C). Results demonstrated that the incidence of balance loss and fall on V-T was comparable to that on S-24. In both trials, fall and balance-loss incidence was significantly reduced in comparison with that on S-1 or on V-C, resulting from significant improvements in the COM state stability. The observed generalization indicates that the control of COM stability can be optimally acquired to accommodate alterations in environmental constraints, and it may be broadly coded and easily modifiable within the CNS. Because of such mechanisms, it is possible that the locomotor-balance skills acquired with the aid of low-friction moveable platforms can translate into resisting falls encountered in daily living.