海拔4100m人体体力活动时氧耗量及血氧饱和度的观察

发布时间：2018-03-24 00:10

本文选题：高原　切入点：心率　出处：《解放军预防医学杂志》2002年01期

【摘要】：目的 :观察海拔 4 10 0m人体体力活动时氧耗量 (VO2 )和氧脉搏 (VO2 /HR)及血氧饱和度 (SaO2 )的关系。方法 :受试者坐于踏车功量机上 ,以 6 0r·min 1连续蹬车 ,每 3min递增 2 5W ,蹬车至衰竭时停止 ,用心电图机记录每个负荷最后 5s的心率 (HR) ,用O2 CO2 气体测定仪及掌式血氧仪分析每个负荷最后 0 .5min的O2 和CO2 含量及SaO2 ,计算VO2 和VO2 /HR。结果 :HR在10 0～ 170b·min 1时 ,VO2 随着HR的增加而呈线性的增加 (y =- 0 .1345 + 0 .0 0 77x ,r =0 .96 92 ,P0 .0 1) ;HR为 10 0～ 130b·min 1时 ,VO2 /HR也随HR的增加而增加 ;HR增加到 14 0～ 170b·min 1时 ,VO2 /HR不但不增加反而减少 ,SaO2 随VO2 的增加而减少。结论 :高原低氧环境增加了人体生理负荷 ,致使人体在高原的劳动能力下降
[Abstract]:Objective: to observe the relationship between oxygen consumption (VO _ 2), oxygen pulse (VO _ 2 / H _ 2) and oxygen saturation (O _ 2) during human physical activity at 4100m above sea level. Methods: the subjects were seated on a treadmill and pedaled continuously with 60 r min _ 1. Each 3min increased by 25 W, stopped at the time of pedal to exhaustion, recorded the heart rate at the last 5 seconds of each load by electrocardiograph (ECG), analyzed the contents of O2 and CO2 and SaO2 at the last 0. 5 min of each load by O2 CO2 gas analyzer and palmar oximeter. VO2 and VO2 / HR were calculated. Results VO _ 2 increased linearly with the increase of HR between 100 ~ 170b / min _ 1. The ratio of VO2 / HR = 100 ~ 130b / min _ 1 / VO _ 2 / HR also increased with the increase of HR. At 140-170b min 1, VO2 / HR not only did not increase, but decreased with the increase of VO2. Conclusion: high altitude hypoxic environment increases physiological load of human body. Causing the human body's ability to work on the plateau to decline
【作者单位】：解放军第十八医院解放军第十八医院解放军第十八医院解放军第十八医院解放军第十八医院军事医学科学院卫生学环境医学研究所军事医学科学院卫生学环境医学研究所解放军第十八医院
【基金】：国家自然科学重点基金资助项目 (No .39730 190 )
【分类号】：R82

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