期刊
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
卷 40, 期 9, 页码 1637-1644出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1249/MSS.0b013e318178465d
关键词
drink temperature; core temperature; preexercise cooling; thermoregulation
Purpose: To investigate the effect of drink temperature oil cycling capacity in the heat. Methods: Oil two separate trials, eight males cycled at 66 +/- 2% VO2peak(mean +/- SD) to exhaustion in hot (35.0 +/- 0.2 degrees C and humid (60 +/- 1%) environments. Participants ingested three 300-mL aliquots of either it cold (4 degrees C) or a warm (37 degrees C) drink during 30 min of seated rest before exercise and 100 mL of the same drink every 10 min during exercise. Rectal and skin temperatures, heart rate, and sweat rate were recorded, Ratings of thermal sensation and perceived exertion were assessed. Results: Exercise time was longer (P < 0.001) with the cold drink (63.8 +/- 4.3 min) than with the warm drink (52.0 +/- 4.1 min). Rectal temperature fell by 0.5 +/- 0.1 degrees C (P < 0.001) at the end of the resting period after ingestion of the cold drinks. There was no effect of drink temperature on mean skin temperature at rest (P = 0.870) but mean skin temperature was lower from 20 min during exercise with ingestion of the cold drink than with the warm drink (P < 0.05). Heart rate was lower before exercise and for the first 35 min of exercise with ingestion of the cold drink than with the warm drink (P < 0.05). Drink temperature influenced sweat rate (1.22 +/- 0.34 and 1.40 +/- 0.41 L.h(-1) for the cold and the warm drink, respectively; P < 0.05). Ratings of thermal sensation and perceived exertion (P < 0.01) during exercise were lower when the cold drink was ingested. Conclusion: Compared with a drink at 37 degrees C, the ingestion of a cold drink before and during exercise in the heat reduced physiological strain (reduced heat accumulation) during exercise, leading to ail improved endurance capacity (23 +/- 6%).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据