MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University Amsterdam, The Netherlands.
Gait Posture. 2012 Jul;36(3):527-31. doi: 10.1016/j.gaitpost.2012.05.016. Epub 2012 Jun 27.
Gait parameters that can be measured with simple instrumentation may hold promise for identifying individuals at risk of falling. Increased variability of gait is associated with increased risk of falling, but research on additional parameters indicates that local dynamic stability (LDS) of gait may also be a predictor of fall risk. The objective of the present study was to assess the association between gait variability, LDS of gait and fall history in a large sample of elderly subjects. Subjects were recruited and tested at a large national fair. One hundred and thirty four elderly, aged 50-75, who were able to walk without aids on a treadmill, agreed to participate. After subjects walked on a treadmill, LDS (higher values indicate more instability) and variability parameters were calculated from accelerometer signals (trunk worn). Fall history was obtained by self-report of falls in the past 12 months. Gait variability and short-term LDS were, individually and combined, positively associated with fall history. In conclusion, both increased gait variability and increased short-term LDS are possible risk factors for falling in the elderly.
可以通过简单仪器测量的步态参数可能有望识别易跌倒的个体。步态变异性增加与跌倒风险增加相关，但对其他参数的研究表明，步态局部动态稳定性 (LDS) 也可能是跌倒风险的预测指标。本研究的目的是评估步态变异性、步态 LDS 与跌倒史在大量老年受试者中的相关性。研究对象在一个大型全国博览会上招募并进行测试。134 名年龄在 50-75 岁之间、能够在跑步机上无辅助行走的老年人同意参与。在受试者在跑步机上行走后，从佩戴在躯干上的加速度计信号中计算出 LDS（值越高表示越不稳定）和变异性参数。通过过去 12 个月的自我报告获取跌倒史。步态变异性和短期 LDS 单独和联合与跌倒史呈正相关。总之，步态变异性增加和短期 LDS 增加都是老年人跌倒的可能危险因素。
