Gogia P, Schneider V S, LeBlanc A D, Krebs J, Kasson C, Pientok C
AMI Park Plaza Hospital, Houston, TX 77004.
Arch Phys Med Rehabil. 1988 Dec;69(12):1030-2.
The purpose of this study was to assess the effect of bed rest on appendicular muscle torque. Fifteen healthy male volunteers between the ages of 21 and 54 participated in the study. The subjects were put on five weeks of strict horizontal bed rest. They were allowed to sit up for bowel movements only; however, no lower extremity weight-bearing was allowed. During bed rest, the subjects were required to ingest a fixed nutritionally adequate diet. Data for muscle torque were obtained using a Cybex II dynamometer, Upper Body Exercise Table (UBXT), and a data analysis computer (HUMAC). The subjects were tested on Cybex at the speed of 60 degrees/sec during the week before starting bed rest and the day after starting reambulation. The muscle groups tested were soleus, gastrocnemius-soleus, dorsiflexors, knee flexors, knee extensors, elbow flexors, and elbow extensors. The torque in all groups but elbow extensors was reduced by 24%, 26%, 8%, 8%, 19%, and 7%, respectively. Student's t-test for paired means demonstrated significant loss of torque in all muscle groups except elbow extensors (p less than 0.05). The results of this study suggest that a strengthening exercise program should be administered to these patients while they are on bed rest, and that the earliest possible attempt should be made to ambulate patients after prolonged bed rest to minimize the loss of muscle torque.
本研究的目的是评估卧床休息对附属肌肉扭矩的影响。15名年龄在21至54岁之间的健康男性志愿者参与了该研究。受试者进行了为期五周的严格水平卧床休息。他们仅被允许坐起来进行排便；然而，不允许下肢负重。在卧床休息期间，受试者被要求摄入固定的营养充足的饮食。使用Cybex II测力计、上身运动台（UBXT）和数据分析计算机（HUMAC）获取肌肉扭矩数据。在开始卧床休息前一周和开始恢复行走后一天，以60度/秒的速度在Cybex上对受试者进行测试。测试的肌肉群包括比目鱼肌、腓肠肌-比目鱼肌、背屈肌、屈膝肌、伸膝肌、屈肘肌和伸肘肌。除伸肘肌外，所有组的扭矩分别降低了24%、26%、8%、8%、19%和7%。配对均值的学生t检验表明，除伸肘肌外，所有肌肉群的扭矩均有显著损失（p小于0.05）。本研究结果表明，应在这些患者卧床休息期间为其实施强化锻炼计划，并且在长期卧床休息后应尽早尝试让患者行走，以尽量减少肌肉扭矩的损失。
