抄録
The purpose of this study is to investigate the change of the electromyogram (EMG) and the heart rate (HR) during static work on the different body surface pressure areas by wearing a pressure suit which can apply pressures to the human body surface by the individual regions. The EMG of the m. flexor carpi ulnaris, m. biceps brachii during the upper extremity work (UEW) and the m. vastus lateralis during the lower extremity work (LEW) were measured for 4min.. The subjects flexed their arms (UEW) or legs (LEW) at the elbow or knee joints angle to 90 degrees with the load of 25%MVC of the m. biceps brachii or m. vastus lateralis respectively. The pressure applied was 10mmHg in both works and 30mmHg (UEW) or 40mmHg(LEW). The pressure time intervals before work was 3min. and 40min., The EMG of the working muscle in the both works was increased when high pressure was applied to the region containing the working muscle. When pressure was applied to the whole body, the increase of the EMG was not siguificant compared with that of the control value (non -pressure). The HR was not increased in every condition compared with that of control.
