环境与职业医学2017，Vol.34Issue(10)：864-867,4.DOI:10.13213/j.cnki.jeom.2017.17216
高原体力劳动强度评价指标研究
Study on evaluation index of physical workload in plateau
徐菁佩 1张尧 2王艳 2罗丽霞 3赵立强 1周鼎伦1
作者信息
- 1. 四川大学华西公共卫生学院,四川成都610041
- 2. 四川电力医院,四川成都610065
- 3. 重庆精神卫生中心,重庆401147
- 折叠
摘要
Abstract
[Objective] To assess the relationship among heart rate (HR),minute ventilation (VE),and oxygen uptake (VO2),and choose an optimal fitting function to find simple indicators for the evaluation of physical workload in plateau.[Methods] Seventy-eight healthy males working at different altitudes were recruited in the study.An incremental cycle ergometer test until volitional fatigue was performed on all participants.Physiologic parameters,including VO2,VE,and HR,were recorded in a computerized test system.The optimal regression equation was chosen from fitting curves between VO2 and VE and between VO2 and HR.[Results] Under the same physical workload and at varied altitudes,VO2 (P=0.505) and heart rate (P=0.306) did not show differences,but VE were significantly different (P＜0.001).At the same altitude and under varied physical workloads,VO2,HR,and VE were statistically different among the workers (P＜0.001).The optimal regression equation showed that the relationship between VE and VO2 (R2=0.903) was stronger than that between HR and VO2 (R2=0.583),which indicated that the power function of VE and VO2 was the best in data fitting.Further analysis found that VE under standard temperature and pressure,dry (VESTPD) was better fitted with VO2 than VE.The resulted fitting function was.(y)vO2=0.06x0.861VESTPD,R 2=0.930.[Conclusion] VESTP D could replace VO2 to assess physical workload in plateau.The established function may supplement and improve existing national standard of physical workload.关键词
高原/体力劳动强度/摄氧量/肺通气量/心率Key words
plateau/physical workload/oxygen uptake/minute ventilation/heart rate分类
医药卫生引用本文复制引用
徐菁佩,张尧,王艳,罗丽霞,赵立强,周鼎伦..高原体力劳动强度评价指标研究[J].环境与职业医学,2017,34(10):864-867,4.
