The Cross-Correlation Analysis of Trunk Rotation with Increased Gait Speed during Walking and Running

Abstract

This study investigated the trunk motion (including the pelvis) while walking and running in order to provide instruction regarding trunk motion during walking and running for rehabilitation.
The subjects were six male sprinters. Walking and running conditions were as follows: 1.3m/s and 1.9m/s for walking, 2.5m/s, 4.5m/s, 6.5m/s and the maximum speed for running. Walking and running were recorded using three high speed video cameras. The pelvic and trunk angles were measured during pelvic and trunk rotation (transverse plane).
The amplitude of pelvic and trunk rotation during one gait cycle in walking increased significantly with an increase in gait speed (r=0.71, p<0.01, r=0.60, p<0.05), and in running (r=0.72, p<0.005, r=0.87, p<0.005). The relationship of pelvic rotation and trunk rotation showed asymmetry while walking, and the symmetry increased with an increase in speed while running.