常温环境递增负荷运动中人体核心体温预测

Prediction of Core Body Temperature during a Load-incremental exercise in a Normal Temperature Environment

DOI：

英文关键词:core body temperature heart rate blood lactic acid prediction

基金项目:2013年辽宁省教育厅科学研究一般项目（L2013440）

作者	单位
汪宏莉	沈阳体育学院运动人体科学学院
陈涛	辽宁省体育科学研究所
韩延柏	沈阳体育学院运动人体科学学院
任雪	上海体育科学研究所
程杨	沈阳体育学院运动人体科学学院

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中文摘要:

目的：探讨常温环境人体运动中核心体温的预测方法，为预防运动型热损伤提供依据。方法：9名男性耐力性运动员在23℃、40%相对湿度的环境中进行递增负荷力竭自行车运动，起始负荷为100 W，增加20 W/10 min，维持60 转/分；连续监控核心体温、心率、血乳酸。结果：核心体温升高值与心率（r=0.906）、血乳酸（r=0.835）正相关（均P＜0.001）。核心体温升高值的预测模型：线性方程为：核心体温升高值=0.008×心率+0.00035×心率×血乳酸－0.670（R2=0.842，P＜0.001）；二次曲线方程为：核心体温升高值=0.221-0.007×心率+6.899×10-5×心率2（R2=0.827，P＜0.001）。结论：常温环境运动中人体的核心体温可应用心率和血乳酸进行预测。

英文摘要:

Objective: To explore a method of predicting core body temperature in a normal temperature environment in order to provide reference for preventing heat injury in exercise. Method: Nine male endurance athletes performed a load-incremental exercise to exhaustion on a cycle ergometer in a room with the temperature of 23℃ and the relative humidity of 40%. The exercise started with the load of 100W, which was increased by 20W every 10min at a pedaling cadence of 60rmp. During the experiment, the core body temperature, heart rate and blood lactic acid were monitored continuously. Result: The increased value of core body temperature correlates positively with heart rate (r=0.906) and blood lactic acid (r=0.835) (both P<0.001). The predictive model of the increased value of core body temperature is as follows：Linear equation: increased value of core body temperature=0.008×heart rate+0.00035×heart rate×blood lactic acid-0.670 (R2=0.842, P<0.001). Quadratic curve equation: increased value of core body temperature=0.221-0.007×heart rate +6.899×10-5×heart rate 2 (R2=0.827, P<0.001). Conclusion: In normal temperature environment, core body temperature can be predicted by heart rate and blood lactic acid during exercise.

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