新型抗荷裤返回状态下神经–肌肉活动影响研究  

The Neuromuscular Effects of New Anti-G Suit under Reentry Posture

作　　者：王林杰[1] 戴小倩 李志利[1] 李文炯[1] 王惠娟[1] 刘书娟[1] 张剑锋[1] 王颜晴[1] 刘洪静[2] 贾蕊溪 席林斌[2] 

机构地区：[1]中国航天员科研训练中心航天医学基础与应用国家重点实验室,北京 [2]中国航天员科研训练中心人因工程全国重点实验室,北京

出　　处：《国际航空航天科学》2023年第1期1-9,共9页Journal of Aerospace Science and Technology

摘　　要：针对返回座椅工况,研究了新型抗荷裤在返回坐位下对神经–肌肉活动的影响。急性实验中5名受试者在平卧位、返回坐位、着抗荷裤平卧位、着抗荷裤返回坐位下检测了腓总神经(CPN)节段性运动神经传导;慢性实验中2名受试者分别在返回坐位下着抗荷裤4小时,定时检测了节段性运动神经传导。研究发现:着抗荷裤后,返回坐位相比于平卧位CPN踝复合肌肉动作电位(CMAP)波幅降低13.4 ± 3.1%且潜伏期缩短;相比于不着服,返回坐位着服后腓骨头CMAP波幅升高7.8 ± 1.3%。返回坐位下着抗荷裤2小时,CPN远端和近端CMAP波幅分别降低28.0%和45.4%,4小时后降低增加至78.2%和75.2%,但小腿和足部主动运动可缓解不适。返回坐位下长时着抗荷裤CPN远端和近端CMAP波幅降低,主动运动有利于耐受。To simulate reentry scenario, the neuromuscular control was studied under reentry posture with and without new anti-g suit. In the short-term experiment, five subjects adapted to the supine or reentry posture and with or without anti-g suit. Then segment motor nerve conduction of common peroneal nerve (CPN) was tested. In the long-term experiment, two subjects sat in the reentry chair wearing anti-g suit for 4 hours. And the CPN motor nerve conduction was monitored periodically. Wearing anti-g suit, the amplitudes of ankle compound muscle action potential (CMAP) under reentry posture were 13.4 ± 3.1% lower than that under supine and had shorter latencies. Under reentry posture, wearing anti-g suit increased the amplitudes of head of fibula CMAP by 7.8 ± 1.3%. After sitting in the reentry chair with anti-g suit for 2 hours, the amplitudes of the distal and proximal CMAP decreased by 28.0% and 45.4%. And the drop increased to 78.2% and 75.2% after 4 hours. The discomfort can be relieved by active calf and foot movements. Long lasting sitting in the reentry chair with anti-g suit induced the decrease of distal and proximal CAMP amplitudes. Periodic active movements benefitted for the tolerance.

关 键 词：返回坐位 抗荷裤 腓总神经 节段性运动神经传导 肌肉复合动作电位 

分 类 号：R54[医药卫生—心血管疾病]