Energy Analysis of the Human Gait: A Comparison Between Natural Gait and with Jumping Stilts
The purpose of this work is to evaluate the mechanical energy exchange during the gait cycle of a subject equipped with energy storage devices (jumping stilts). For comparison, the same evaluation was carried out in a gait cycle with no jumping stilts (natural gait). First, a video of the motion was recorded, then the video frames were post-processed to obtain the sagittal plane trajectories of eleven markers (geometric points) placed onto the subject and finally a numerical code was developed to build up a multi-bodies model able to compute the mechanical energy during the gait. Further, the results from the multi-bodies model were compared with those from a simplified model based on the motion of the centre of mass of the subject.
KeywordsGait cycle mechanical energy Motion capture Multi-bodies model
Thanks are due to engineer Matteo Lecca for the help given during the tests.
The study was carried out in compliance with the ethical principles for research involving human subjects expressed in the Declaration of Helsinki. The subject who used the device (participant) signed an informed consent agreeing to participate. The study carried out does not fall in the field of Life Sciences, instead being in the field of Mechanics and Robotics. The device used is available in the market and it is subject to current safety regulations. The device has been strictly used according to the operation mode as indicated by the manufacturer for a recreational use. Neither sensors nor other devices were placed on the subject. The test conducted has been motion video-camera capturing test.
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