Waking Adaptation Associated with Elongation of Step Length at the Usual Walking Speed of Healthy Men

NISHIMORI Takashi, ITO Akira

doi:10.1589/rika.29.51

[Purpose] The present study investigated whether moving the front extremity forward over the center of mass at the moment of initial contact or moving the rear extremity backward at the moment of pre-swing affects the elongation of step length. [Subjects and Method] Subjects were 6 healthy men. Each subject walked with an adjustable-speed pacemaker. The subject’s motion during walking was measured by a three dimensional analysis system. In this study, step length (SL) was divided into two components for examination: touch-down distance (TD) using body inertia parameters at initial contact; and release distance (RD). Each subject performed two walking tasks at 1.3 m/s (usual walking speed). The free walking task was walking at the subjects’ preferred speeds, and the restrained walking task was walking with elongation of SL to 1 m. This research examined the variance of TD and RD, including pelvic rotation and extremity angles, in increasing the SL, by comparing free walking with restrained walking using the t-test. [Results] Although TD and RD increased significantly in restrained walking, the joint motion associated with the elongation of TD was not consistent. On other hand, hip extension and pelvic rotation were found to be associated with the elongation of RD. [Conclusion] RD could reasonably be expected to cause elongation of SL. <br>

Waking Adaptation Associated with Elongation of Step Length at the Usual Walking Speed of Healthy Men

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