Effects of the package holding with one hand on the center of foot pressure

概要

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The purpose of this study was to examine the influence of holding a package with one hand on the center of foot pressure (CFP) during a static upright posture. Fifteen healthy male adults kept the posture for 1 minute while holding a weight corresponding to 0%, 5%, 10%, 20%, 30%, 40%, and 50% of maximal jerk strength with one hand. Body sway during a static upright posture with each weight was evaluated by the CFP deflection. Before the CFP test, the bilateral difference of body weight was measured with each load weight to reveal the shift of the center of gravity. In the results of one-way ANOVA, the bilateral difference of body weight increased significantly between the weight conditions. The four mean factor scores of CFP tended to increase above 30% of maximal jerk strength (factors 1, 3, and 4) or 40% (factor 2). There was no significant difference between mean factor scores in load weights from 0% to 30% in any factor. There is little CFP deflection for upright postural control with package weights up to 30%. However, over 40% there is a large CFP deflection, and the tendency is to keep the posture with high frequency CFP sway. © Springer-Verlag Italia 2007.
Springer Verlag (Germany)の論文
2007-12-00