Muscle atrophy occurs in human musculature system due to inactivity of muscles in microgravity environment. Herein, a novel designed countermeasure gravitational load modulation bodygear is developed to enhance muscle activity. The bodygear is devised to compress the body through axial loading from shoulder to feet. The time and frequency domain parameters of electromyography (EMG) signals showed that the activity of gastrocnemius and soleus muscle was increased by 87% and 90% respectively in comparison to without bodygear during stepping. The enhanced muscle activity might be due to the increase in the recruitment of extra motor units, increase in contraction and more potential firing in muscles with bodygear. The results of analysis of variance confirmed that the root mean square, peak and mean frequency values were increased significantly (p < 0.05). Overall, the present bodygear is simple yet highly efficient to enhance muscle activity by providing enough loading during exercise. The bodygear demonstrates potential as a exercise countermeasure device by providing axial loading and can mimic the muscle activity of standing position in bed ridden patients. Further, it may serve as an rehabilitation device for speedy recovery of patients after further design refinement.

由于微重力环境中的肌肉不活动，在人体肌肉系统中发生肌肉萎缩。在本文中，开发了新颖设计的对策重力负载调节身体装备以增强肌肉活动。防身衣设计用于通过从肩部到脚部的轴向载荷来压缩身体。肌电图（EMG）信号的时域和频域参数表明，与不使用身体装备的人相比，腓肠肌和比目鱼肌的活动分别增加了87％和90％。肌肉活动的增强可能是由于增加了额外的运动单位，收缩的增加以及带有档位的肌肉可能产生的更多击发。方差分析的结果证实了均方根，峰值和平均频率值显着增加（p <0.05）。总体而言，本发明的装备简单而高效，通过在运动过程中提供足够的负荷来增强肌肉活动。该防身衣通过提供轴向载荷展示出作为运动对策设备的潜力，并且可以模仿卧床不起患者的站立姿势的肌肉活动。此外，它还可以用作康复设备，以便在进一步改进设计后迅速恢复患者的生命。