Strydom N B, Kotze H F, van der Walt W H, Rogers G G
J Appl Physiol. 1976 Aug;41(2):202-5. doi: 10.1152/jappl.1976.41.2.202.
There is some indication in the literature that ascorbic acid (vitamin C) may reduce the physiological responses to heat stress. Consequently, the effect of ascorbic acid ingestion on heat-strain indicators has been studied on a group of 60 mining recruits undergoing climatic room acclimatization. Of the 60 men, 19 received a daily dose of 250 mg ascorbic acid; 21 a daily dose of 500 mg ascorbic acid; and 20 received a placebo daily. Measurements of rectal temperature, heart rate, and hourly sweat rate were made on all subjects during the 4 h of heat exposure per day for 10 days. The wet bulb temperature was 32.2 degrees C, the dry bulb 33.9 degrees C, the air movement 0.4 m/s, and the work rate 35 W. The results indicate that the rate and degree of acclimatization, as assessed by 4th-h rectal temperature, is enhanced by ascorbic acid supplementation and that no differences in response could be shown between daily dosages of 250 and 500 mg of vitamin C.
文献中有一些迹象表明，抗坏血酸（维生素C）可能会降低对热应激的生理反应。因此，对一组60名正在进行气候室适应性训练的新矿工进行了研究，以探讨摄入抗坏血酸对热应激指标的影响。这60名男性中，19人每天服用250毫克抗坏血酸；21人每天服用500毫克抗坏血酸；20人每天服用安慰剂。在为期10天的每天4小时热暴露期间，对所有受试者进行直肠温度、心率和每小时出汗率的测量。湿球温度为32.2摄氏度，干球温度为33.9摄氏度，空气流速为0.4米/秒，工作速率为35瓦。结果表明，通过第4小时直肠温度评估的适应速率和程度，因补充抗坏血酸而提高，并且每日250毫克和500毫克维生素C剂量之间在反应上未显示出差异。
