作者测定了三名男性在环境温度为20、26、和36℃时,从事中等(VO_(2max)40%)和重(VO_(2max)70%)活动(踏功率脚踏车)20～25分钟中的食道温、皮温(8个点)、心率、搏出量、心输出量、前臂血流量、血浆量等。并用最优直线回归分析了食道温与前臂血流的相关关系。实验结果表明:1.中等劳动时,心率和搏出量于劳动2～3分钟已达稳定状态。整个劳动过程中,搏出量的相对稳定与环境(或皮肤)温度、食道温无关。心输出量和心率在气温36℃时则比常温分别增加1.3升/分和15次/ The authors measured 20 to 25 minutes of activities (riding a power bicycle) of medium (VO 2max 40%) and heavy (VO 2max 70%) activities at three ambient temperatures of 20, 26, and 36 ° C Of esophageal temperature, skin temperature (8 points), heart rate, stroke volume, cardiac output, forearm blood flow, plasma volume and so on. The optimal linear regression was used to analyze the correlation between esophageal temperature and forearm blood flow. The experimental results show that: 1. When working in middle class, the heart rate and stroke volume have reached steady state within 2 to 3 minutes of labor. Throughout the labor process, stroke volume relative stability and environmental (or skin) temperature, esophageal temperature has nothing to do. Cardiac output and heart rate at room temperature 36 ℃ were increased by 1.3 liters / min and room temperature 15 times /