训练对于步伐周期长程相关性的影响研究

为研究普通人群和受训人群步伐特征的差异,设计静电探测器对两种不同人群样本踏步静电信号进行采集,采用消除波动趋势分析法对步伐周期及其相关序列进行分析,研究步伐训练对于步伐相关性的影响. 研究结果表明,步伐训练使受训人员比普通人员的步伐周期增量幅度序列具有更强的长程相关性,而符号序列具有更强的长程反相关性. 

Impact of Training on Long-Range Correlation of Gait Cycle

In order to study the difference of gait cycle characteristic between ordinary people and trained people, human gait signal was measured by an electrostatic sensor instead of accelerometer. Self correlation algorithm was applied to obtain the gait cycle series, further to calculate the increment series. The increment series was decomposed into magnitude series and sign series. A detrended fluctuation analysis algorithm was applied to analyze these series for 5 subjects without training and 5 others trained. It is found that the magnitude series of trained subjects show stronger long-range correlation than those without training, and the sign series of trained subjects show stronger long-range anti-correlation than the other.