足底への荷重と頸部への振動刺激が立位時の重心動揺に及ぼす影響―busy-line effectの影響―

DOI IR Web Site Open Access

Bibliographic Information

Other Title
  • ソクテイ エ ノ カジュウ ト ケイブ エ ノ シンドウ シゲキ ガ リツイジ ノ ジュウシン ドウヨウ ニ オヨボス エイキョウ : busy-line effect ノ エイキョウ

Search this article

Abstract

The purpose of this study was to investigate the effects of changes in forefoot pressure on postural responses to vibrations of the neck muscles in healthy humans. Previous studies showed that balance instability in upright posture alters the role of proprioceptive information and the state of system balance. For example, it was reported that proprioceptive information resulting from vibrational stimulation is blocked during dynamic motor tasks. In this study, we hypothesized that proprioceptive information would be blocked during static movement tasks on receiving multiple sensory inputs, affecting postural responses. Subjects consisted of 15 healthy individuals, standing upright on a force platform for 30 seconds with their eyes closed. To change the pressure of the forefoot as cutaneous sensor information, the posture response without heel lift, with 7 cm heel lift, and with 14 cm heel lift to one side vibration stimulation or bilateral stimulation of the neck muscles given as proprioceptive information was compared with muscle stimulation. In this study, a root mean square value was calculated from the center of pressure as a measure of body sway, and a two-way repeated-measures ANOVA was performed. There was a significant interaction between the heel height and vibration stimulation, indicating that increasing the forefoot pressure on both sides of the muscle resulted in a decrease in the root mean square value. The results of this study suggest that increasing the forefoot pressure and location of vibration stimuli causes vibration-induced suppression of sensory information input and reduces body sway.

Journal

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top