Can Recovery Foot Placement Affect Older Adults' Slip-Fall Severity?
Can Recovery Foot Placement Affect Older Adults' Slip-Fall Severity?
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恢复足部放置会影响老年人滑倒的严重程度吗？
DOI：
10.1007/s10439-017-1834-4
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发表时间：
2017
影响因子：
3.8
通讯作者：
Pai,Yi-Chung
中科院分区：
文献类型：
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作者：
Wang,Shuaijie;Liu,Xuan;Lee,Anna;Pai,Yi-Chung
在地上行走时发生滑倒后，跌倒可分为两类：脚前跌倒或劈裂跌倒。本研究的目的是调查恢复脚的放置是否会决定滑倒类型、跌倒的可能性以及与每次跌倒相关的严重程度。跌倒严重程度是根据跌倒停止时身体各部分的撞击速度或躯干方向来估计的。195名参与者在7米长的人行道上行走时经历了一次新奇的、未经宣布的滑倒。通过与测力板和测力传感器同步的运动捕捉系统收集全身标记集的运动学。结果表明，恢复脚着地位置相对于恢复脚着地时的投影质心位置对滑移类型有90.8%的决定作用。脚向前滑动导致的福尔斯跌倒率明显低于分开滑动（47.6%比67.8%，p < 0.01）。然而，脚向前福尔斯跌倒更危险，因为与分开式福尔斯跌倒相比，脚向前跌倒与显著更大的估计最大髋部撞击速度（p< 0.001）和躯干后倾角（p< 0.001）相关。
Following a slip occurred in the overground walking, a fall can be classified into two exclusive categories: feet-forward fall or split fall. The purposes of this study were to investigate whether the placement of the recovery foot would determine the slip types, the likelihood of fall, and the severity associated with each fall. The fall severity was estimated based on the impact velocity of body segments or trunk orientation upon fall arrest. One hundred ninety-five participants experienced a novel, unannounced slip while walking on a 7-m walkway. Kinematics of a full-body marker set was collected by a motion capture system which was synchronized with the force plates and loadcell. The results showed that the recovery foot landing position relative to the projected center of mass position at the recovery foot touchdown determined the slip type by 90.8%. Feet-forward slips led to significantly lower rate of falls than did split slips (47.6 vs. 67.8%,p< 0.01). Yet, feet-forward falls were much more dangerous because they were associated with significantly greater estimated maximum hip impact velocity (p< 0.001) and trunk backward leaning angle (p< 0.001) in comparison to split falls.