对高水平训练受试者运动性低氧血症发生率的重新审视。

Re-examination of the incidence of exercise-induced hypoxaemia in highly trained subjects.

作者信息

Brown D D, Knowlton R G, Sanjabi P B, Szurgot B T

机构信息

Department of Health, Physical Education, Recreation and Dance, Illinois State University, Normal 61761.

出版信息

Br J Sports Med. 1993 Sep;27(3):167-70. doi: 10.1136/bjsm.27.3.167.

DOI:10.1136/bjsm.27.3.167

PMID:8242272

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1332180/

Abstract

The purpose of this study was to examine the occurrence of exercise-induced hypoxaemia (EIH) during maximal exercise in highly trained athletes. Eleven trained cyclists (mean(s.d.) age 23(3.5) years; mean(s.d.) VO2max 66.9(4.8) ml kg-1min-1) performed a continuous, multistage (270 kpm min-1) cycle ergometer test to exhaustion. Measurements of arterial oxygen-haemoglobin saturation (%HbO2) were obtained simultaneously at rest, every 2 min during exercise, and at maximum exercise capacity from arterial blood sampling (%SaO2) and ear oximetry (%SpO2). Exercise induced hypoxaemia (%HbO2 < or = 91%) was present in 64% of the athletes examined when EIH was determined using pulse oximetry, whereas none of the subjects exhibited EIH when %HbO2 was determined using arterial blood. At rest the values for %HbO2 were similar with mean(s.d.) %SaO2 being 97.3(0.6)% and mean(s.d.) %SpO2 being 96.5(1.6)%. During exercise, statistically significant differences were found for %HbO2 between arterial blood and ear oximetry at the 6-min, 8-min, and maximal exercise sampling times (repeated measures analysis of variance, P < 0.05). The results indicate that ear oximetry overestimates the incidence of EIH and underestimates the oxyhaemoglobin saturation in highly trained cyclists during exercise in comparison with those measurements made from arterial blood.

摘要

本研究的目的是检测高水平运动员在最大强度运动期间运动诱发的低氧血症（EIH）的发生情况。11名受过训练的自行车运动员（平均（标准差）年龄23（3.5）岁；平均（标准差）最大摄氧量66.9（4.8）ml·kg⁻¹·min⁻¹）进行了一项持续的、多阶段（270 kpm·min⁻¹）的自行车测力计测试，直至力竭。在静息状态、运动期间每2分钟以及运动能力达到最大值时，通过采集动脉血（%SaO₂）和耳部血氧饱和度测定（%SpO₂）同时测量动脉血氧血红蛋白饱和度（%HbO₂）。当使用脉搏血氧饱和度测定法确定EIH时，64%接受检查的运动员出现运动诱发的低氧血症（%HbO₂≤91%），而当使用动脉血测定%HbO₂时，没有受试者出现EIH。静息时，%HbO₂的值相似，平均（标准差）%SaO₂为97.3（0.6）%，平均（标准差）%SpO₂为96.5（1.6）%。在运动期间，在6分钟、8分钟和最大运动采样时间点，动脉血和耳部血氧饱和度测定法之间的%HbO₂存在统计学显著差异（重复测量方差分析，P<0.05）。结果表明，与通过动脉血进行的测量相比，耳部血氧饱和度测定法高估了高水平自行车运动员在运动期间EIH的发生率，并低估了氧合血红蛋白饱和度。