摘要
探讨不同海拔高度和不同步速条件下的适宜负重，对于确定高原作业人员合理负重有指导意义。本工作通过高原模拟负重步行试验（跑台）提出适宜负重。在海拔３７００ｍ，步行速度分为４．０、４．５和５．０ｋｍ／ｈ；负重分别为体重的０、１４％、２１％、２８％、３５％和４２％。在海拔４３００ｍ，步行速度分别为３．０、３．５和４．０ｋｍ／ｈ；负重分别为体重的Ｏ、１４％、２１％、２８％、３５％。在海拔５２００ｍ，步行速度分别为２．０、２．５和３．０ｋｍ／ｈ；负重分别为体重的０、７％、１４％、２１％、２８％和３５％。在每个海拔高度上选择移居半年以上的青年学生１２人作为受试对象。每人参加不同速度与不同负重步行试验。根据很累感发生率、ＶＥ、ＨＲ、恢复ＨＲ和Ｅ的改变确定适宜负重。结果表明，在海拔３７００ｍ，速度为４．０、４．５和５．０ｋｍ／ｈ时的适宜负重分别为２０．８、１７．４和１４．１ｋｇ。在海拔４３００ｍ，速度为３．０、３．５和４．０ｋｍ／ｈ时的适宜负重分别为１８．４、１４．３和１０．２ｋｇ。在海拔５２００ｍ，速度为２．０、２．５和３．０ｋｍ／ｈ时的适宜负重分别１７．３、１４．２和１１．４ｋｇ。
A study on optimum carriage load was made in twelve healthy youngmen at altitudes of 3 700,4
300 and 5 200m , the subjects marched on a treadmill for30min according to the following
design; 1 ) Walking speed 0,.5,5, 0km/h; car-riage load 0%, 14%, 2l%, 29%, 35%, and 42%body
weight at each speed at3700m; 2) Walking speed 3.0,3.5,4. 0km/h; carriage load
0%,14%,21%,28%,and 35%body weight at each speed at 4300m; 3) Walking speed
.0,2.5,3.0km/h,carriage load0%,7%, 14%, 21%, 28%, and 35%body weight at each speed
at5200m。 Ventilation(VE), heart rate(HR), recovery pulse rate, energy expenditure,and grade
of fatigue during marching were measured。 The optimum carriage load was es-timated by
finding the break point of the systematic increase in VE, HR, energy expendi-ture and rate of
over-fatigue, The results showed that the corresponding optimum carriageload for the subjects
walking at speeds of 4.0,4.5,5. 0km/h were 20.8, 17.4, 14.lkg at 3 700m, and at speeds of 3.0,3.
5,4. 0km/h were l8.4, 14.3,10.2kg at4300m, and at speeds of 2.0,2.5,3. 0km/h were l7.3, 14.2,l1.
4kg at 5 200m。
出处
《航天医学与医学工程》
CAS
CSCD
1994年第3期202-208,共7页
Space Medicine & Medical Engineering
关键词
高原
工作负荷
疲劳
能量代谢
mountain inhabitants, workload, fatigue(physiology),
walking,ener-gy metabolism, ventilation(physiology), heart rate, load carriage
