시· 촉각 되먹임이 넙다리네갈래근 등척성 운동에 미치는 영향

Abstract

Physical therapists have been using biofeedback training to induce improvements invarious circumtances. The purpose of this study was to compare the effects ofvisual and tactile feedback using electrical stjmulation on quadriceps strength. Nineteen women without known impairment of the neuromusculoskeletal systemvolunteered for this study. Subjects were randomly allocated into three groups: visualfeedback, tactile feedback, and control group. The torque of isometric knee extensionforce was measured. Subjects were aked to exert the maximal isometric contractionforce of quadriceps over a 30 second period. The resting period of 10 minutes wasgiven after the maximal isometric contraction to avoid the muscle fatige. In between groups comparison, significant differences of the peak torque and thetorque area were found on the performance of the maximal isometric contraction ofquadriceps (p<.05). The values peak of torque and torque area were significantlyhigher during visual feedback than tactile feedback. The results of this study suggestthat visual feedback is more powerful than tactile teedback (p<.01).