期刊
JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY
卷 28, 期 -, 页码 61-66出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jelekin.2016.02.007
关键词
Slips; Falls; Muscle activity; Gait; Reactive responses
资金
- National Institute of Occupational Safety and Health [NIOSH R03 OH007533, R01OH007592]
Falls and injuries due to falls are a major health concern, and accidental slips are a leading cause of falls during gait. Understanding how the body reacts to an unexpected slip can aid in developing intervention techniques to reduce the number of injuries due to falls. In this study, muscle activation patterns, specifically those of the trailing (non-slipping) limb, were studied in unexpected slips of 24 young and 24 middle-aged adults. The typical reaction of the trailing limb is swing phase interruption in an attempt to arrest the slip. Variables examined were the reactive muscle activation onset, peak electromyography (EMG) magnitude, and time-to-peak of the vastus lateralis and medial hamstring of the trailing limb. Statistical analysis was performed to determine the effects of slip severity, quantified by peak slip velocity, and age on outcome variables. As slip severity increased, the reactive activation onset of the medial hamstring was significantly faster and there was a trend approaching significance for the onset of the vastus lateralis. Additionally, the peak magnitude and time-to-peak of the vastus lateralis increased with slip severity. No significant effects of age were found on any of the output variables. These findings may aid in development of perturbation-based paradigms, as it may be possible to tune the postural control system to generate an appropriate response to unexpected slips. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据