海拔3680m体力活动时氧耗量及血氧饱和度的观察

发布时间：2018-04-29 03:40

本文选题：高原 + 氧脉搏　；参考：《解放军预防医学杂志》2002年02期

【摘要】：目的 :观察高海拔地区体力活动时的氧耗量 (VO2 )、氧脉搏 (VO2 /HR)及血氧饱和度(Sa % )的变化。方法 :受试者坐于踏车功率计上 ,以 6 0r·min- 1连续踏车 ,每 3min递增 2 5W ,踏车至极量点最后时停止 ,记录每个量级符合最后 5s的心率 ,测量每个量级负荷最后半分钟O2 和CO2 含量及Sa % ,计算VO2 和VO2 /HR。结果 :HR在 10 0～ 170b·min- 1,VO2 随HR的增加而呈线性增加 (Y =10 6 .4 2 0 8- 0 .192 8Xr =0 .9936 ,P 0 .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 140～ 170b·min- 1,VO2 /HR不但不增加反而减少 ;Sa %随HR的增加而呈线性减少 (Y =10 4 .96 4 - 0 .182 1Xr=0 .9981P 0 .0 1) ;Sa %亦随VO2 的增加呈线性减少(Y =10 4 .96 0 8- 2 5 .142Xr=0 .992 8)。结论 :高原低氧环境增加了人体生理负荷 ,造成体力活动时氧耗量的增加 ,血氧饱和度下降 ,这可能是造成人体在高原劳动能力下降的原因
[Abstract]:Aim: to observe the changes of oxygen consumption (VO _ 2), oxygen pulse (VO _ 2 / H _ 2) and blood oxygen saturation (sa%) during physical activity at high altitude. Methods: the subjects were seated on the treadmill power meter, with 60 r min-1 continuous treadmill, each 3min increased by 25 W, the treadmill stopped at the end of the maximum point, and the heart rate of each order of magnitude was recorded at the last 5 s. O 2 and CO2 contents and sa% were measured at the last half minute of each order of magnitude load. VO2 and VO2 / HRs were calculated. Results there was a linear increase of VO2 between 100 ~ 170 bmin-1 VO2 with the increase of HR. The HR was 100 ~ 130 bmin-1 / min ~ (-1) and increased to 140 ~ 170 b / min ~ (-1) VO _ 2 / HR with the increase of 100 ~ 130 b / min ~ (-1) 8Xr / min ~ (-1) VO _ 2 / HR (n = 100 ~ 130 b 路min ~ (-1) 路min ~ (-1) VO _ 2 / HR respectively.) the ratio of VO _ 2 / HR increased to 140 ~ 170 b / min ~ (-1) 8Xr / HR. There was a linear decrease of sa% with the increase of HR, and a linear decrease of sa% with the increase of VO2 (104.964-0.964-0.182 1Xr=0 .9981P0.01) and the linear decrease of sa% with the increase of VO2. Conclusion: high altitude hypoxic environment increases physiological load, increases oxygen consumption and decreases blood oxygen saturation during physical activity, which may be the reason for the decrease of human labor capacity at high altitude.
【作者单位】：乌鲁木齐军医学院军事医学教研室解放军第十八医院高山病研究所乌鲁木齐军医学院军事医学教研室乌鲁木齐军医学院军事医学教研室乌鲁木齐军医学院军事医学教研室
【分类号】：R82

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