Least Action Principle in Gait

Details Least Action Principle in Gait Least Action Principle in Gait

2009-05-21

arxiv.org/abs/0905.3499v3

EPL, 87 (2009) 58003

Physics

Biological Physics

4 pages, 5 figures

Scientific paper

10.1209/0295-5075/87/58003

We apply the laws of human gait vertical ground reaction force and discover the existence of the phenomenon of least action principle in gait. Using a capacitive mat transducer system, we obtain the variations of human gait vertical ground reaction force and establish a structure equation for the resultant of such a force. Defining the deviation of vertical force as an action function, we observe from our gait optimization analysis the least action principle at half of the stride time. We develop an evaluation index of mechanical energy consumption based upon the least action principle in gait. We conclude that these observations can be employed to enhance the accountability of gait evaluation.

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