On the relation between fluctuation in center of body mass and that in step cycle of human walking

本研究旨在探讨人类两足行走过程中质心（COM）波动与步进周期（SC）变化的物理特征之间的相关性。结果表明：1)从时间角度分析质心（COM）和步进周期（SC）变化时，两者之间没有显著的相关性；2)两者之间也没有相关性。从总变异量本身分析，这表明两足行走时COM和SC的控制系统并没有共同的控制机制，也就是说，COM和SC的变异特征反映了两足行走时不同的神经机制。未来的研究将通过对老年人步行时身体波动特征的进一步研究，探索更好的预测跌倒风险的指标。

The purpose of present study was to examine to what extent physical characteristics of center of mass (COM) fluctuation and step cycle (SC) variation during human bipedal walk are related each otherThe results demonstrated that I) when both COM and SC variations were analyzed from chronological point of view, no significant relations were hind, and 2) no relations were found also, when analyzed from total amount of variation itself These results suggest that no common control mechanism underlies control system of both COM and SC. In other words variation characteristics of COM and SC reflect different neural mechanisms working during bipedal walking. Future studies will explore better indexes to predict risk of fall with further studies on body fluctuation characteristics during walking specifically in elderly people.