Department of Physiology, Yong Loo Lin School of Medicine, National -University of Singapore, Singapore.
Int J Sports Med. 2013 Dec;34(12):1037-42. doi: 10.1055/s-0033-1337906. Epub 2013 May 13.
There is limited information on the ingestion of cold drinks after exercise. We investigated the thermoregulatory effects of ingesting drinks at 4°C (COLD) or 28°C (WARM) during work-rest cycles in the heat. On 2 separate occasions, 8 healthy males walked on the treadmill for 2 cycles (45 min work; 15 min rest) at 5.5 km/h with 7.5% gradient. Two aliquots of 400 mL of plain water at either 4°C or 28°C were consumed during each rest period. Rectal temperature (T re ), skin temperature (T sk ), heart rate and subjective ratings were measured. Mean decrease in T re at the end of the final work-rest cycle was greater after the ingestion of COLD drinks (0.5±0.2°C) than WARM drinks (0.3±0.2°C; P<0.05). Rate of decrease in T sk was greater after ingestion of COLD drinks during the first rest period (P<0.01). Mean heart rate was lower after ingesting COLD drinks (P<0.05). Ratings of thermal sensation were lower during the second rest phase after ingestion of COLD drinks (P<0.05). The ingestion of COLD drinks after exercise resulted in a lesser than expected reduction of T re . Nevertheless, the reduction in T re implies a potential for improved work tolerance during military and occupational settings in the heat.
关于运动后饮用冷饮的信息有限。我们研究了在热环境中工作-休息周期内饮用 4°C（冷）或 28°C（温）饮料对体温调节的影响。在 2 个不同的场合，8 名健康男性以 5.5 公里/小时的速度在跑步机上行走 2 个周期（45 分钟工作；15 分钟休息），坡度为 7.5%。在每个休息期间，分别饮用 400 毫升的普通水，温度为 4°C 或 28°C。测量直肠温度（T re ）、皮肤温度（T sk ）、心率和主观评分。最后一个工作-休息周期结束时，T re 的平均下降量在饮用冷饮料（0.5±0.2°C）后大于温饮料（0.3±0.2°C；P<0.05）。在第一个休息期间，饮用冷饮料后 T sk 的下降速度更快（P<0.01）。平均心率在饮用冷饮料后较低（P<0.05）。在饮用冷饮料后的第二个休息阶段，热感觉评分较低（P<0.05）。运动后饮用冷饮料导致 T re 的下降幅度低于预期。然而，T re 的降低意味着在热环境中，在军事和职业环境中工作的耐受性可能会提高。
