[1]张钢,李鹏,王开发,等.以相对心率为指标的高原适宜劳动强度评价方法研究[J].第三军医大学学报,2020,42(09):948-952.
 ZHANG Gang,LI Peng,WANG Kaifa,et al.Evaluation of optimal labor intensity with relative heart rate at plateau[J].J Third Mil Med Univ,2020,42(09):948-952.
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《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

卷:
42卷
期数:
2020年第09期
页码:
948-952
栏目:
军事医学
出版日期:
2020-05-15

文章信息/Info

Title:
Evaluation of optimal labor intensity with relative heart rate at plateau
作者:
张钢李鹏王开发高钰琪
陆军军医大学(第三军医大学):高原军事医学系,极端环境医学教育部重点实验室,军队高原医学重点实验室,生物医学工程系
Author(s):
ZHANG Gang LI Peng WANG Kaifa GAO Yuqi

Key Laboratory of High Altitude Medicine of PLA, Key Laboratory of Extreme Environmental Medicine of Ministry of Education, Faculty of High Altitude Military Medicine, 2Faculty of Bioengineering Medicine, Army Medical University (Third Military Medical University), Chongqing, 400038, China

关键词:
相对心率高原适宜运动强度氧耗量运动心率
Keywords:
relative heart rate plateau optimal labor intensity oxygen consumption exercise heart rate
分类号:
R134.1; R331.31; R339.54
文献标志码:
A
摘要:

目的探讨高原环境运动负荷状态下人体心率变化规律,建立高原适宜劳动强度评价方法。方法采用亚极量踏阶运动试验,在平原(海拔300 m)和高原(海拔3 700、4 200、4 600和5 100 m)环境对228例受试者测定了不同运动负荷状态下运动心率和恢复心率,计算了最大氧耗量(VO2max)、心率变化幅度(X)和相对心率综合指标(Z)。结果与平原相比,高原3 700~5 100 m受试者VO2max显著下降(41.74±2.96, 41.25±2.84, 41.08±2.35, 41.60±2.82 vs 46.61±3.74 mL·kg-1·min-1,P<0.05);相对心率综合指标Z值随着心率变化幅度X值的增加而呈线性的增加(Z=0.920+0.006X,R2=0.794);受试者中度劳动强度Z值(1.42±0.21)显著小于重度劳动强度(1.52±0.23,P<0.05)。结论高原环境人体劳动能力显著下降,高原适宜劳动强度宜在中度劳动强度范围内,Z=1.42可作为高原环境中度劳动强度判定依据。

Abstract:

ObjectiveTo explore the law of the change of human heart rate under plateau environmental exercise load and establish an evaluation method of optimal labor intensity at plateau. MethodsSub-polar treadmill exercise test was used to measure the exercise heart rate and recovery heart rate of 228 subjects under different exercise load conditions at plain (altitude 300 m) and plateau (altitude 3 700, 4 200, 4 600 and 5 100 m). The maximum oxygen consumption (VO2max), heart rate change amplitude (X) and relative heart rate comprehensive index (Z) were calculated. ResultsCompared with the plain, VO2max of subjects from 3 700 m to 5 100 m at high altitude was decreased significantly (41.74±2.96, 41.25±2.84, 41.08±2.35, 41.60±2.82 vs 46.61±3.74  mL·kg-1·min-1, P<0.05). The Z value of the relative heart rate comprehensive index was increases linearly with the increase of the X value of the heart rate change amplitude (Z=0.920+0.006X, R2=0.794). The Z value of moderate labor intensity (1.42±0.21) was obviously lower than that of severe labor intensity (1.52±0.23, P<0.05). ConclusionPlateau environment significantly decreases the labor capacity of human body. So, the suitable labor intensity at plateau should be within the range of moderate labor intensity. Z=1.42 can be used as the cut-off value for judging moderate labor intensity in plateau environment. 

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更新日期/Last Update: 2020-05-06