Lopez Rebecca M, Cleary Michelle A, Jones Leon C, Zuri Ron E
Department of Kinesiology, University of Connecticut, 2095 Hillside Road, Unit 1110, Storrs, CT 06269, USA.
J Athl Train. 2008 Jan-Mar;43(1):55-61. doi: 10.4085/1062-6050-43.1.55.
Athletic trainers must have sound evidence for the best practices in treating and preventing heat-related emergencies and potentially catastrophic events.
To examine the effectiveness of a superficial cooling vest on core body temperature (T(c)) and skin temperature (T(sk)) in hypohydrated hyperthermic male participants.
A randomized control design with 2 experimental groups.
Participants exercised by completing the heat-stress trial in a hot, humid environment (ambient temperature = 33.1 +/- 3.1 degrees C, relative humidity = 55.1 +/- 8.9%, wind speed = 2.1 +/- 1.1 km/hr) until a T(c) of 38.7 +/- 0.3 degrees C and a body mass loss of 3.27 +/- 0.1% were achieved.
Ten healthy males (age = 25.6 +/- 1.6 years, mass = 80.3 +/- 13.7 kg).
INTERVENTION(S): Recovery in a thermoneutral environment wearing a cooling vest or without wearing a cooling vest until T(c) returned to baseline.
MAIN OUTCOME MEASURE(S): Rectal T(c), arm T(sk), time to return to baseline T(c), and cooling rate.
During the heat-stress trial, T(c) significantly increased (3.6%) and, at 30 minutes of recovery, T(c) had decreased significantly (2.6%) for both groups. Although not significant, the time for return to baseline T(c) was 22.6% faster for the vest group (43.8 +/- 15.1 minutes) than for the no-vest group (56.6 +/- 18.0 minutes), and the cooling rate for the vest group (0.0298 +/- 0.0072 degrees C/min) was not significantly different from the cooling rate for the no-vest group (0.0280 +/- 0.0074 degrees C/min). The T(sk) during recovery was significantly higher (2.1%) in the vest group than in the no-vest group and was significantly lower (7.1%) at 30 minutes than at 0 minutes for both groups.
We do not recommend using the cooling vest to rapidly reduce elevated T(c). Ice-water immersion should remain the standard of care for rapidly cooling severely hyperthermic individuals.
运动训练师必须有充分的证据来支持治疗和预防与热相关的紧急情况及潜在灾难性事件的最佳实践。
研究浅表冷却背心对水分流失的高温男性参与者的核心体温（T(c)）和皮肤温度（T(sk)）的影响。
有两个实验组的随机对照设计。
参与者在炎热潮湿的环境（环境温度 = 33.1 ± 3.1摄氏度，相对湿度 = 55.1 ± 8.9%，风速 = 2.1 ± 1.1千米/小时）中通过完成热应激试验进行锻炼，直到达到38.7 ± 0.3摄氏度的T(c)和3.27 ± 0.1%的体重减轻。
10名健康男性（年龄 = 25.6 ± 1.6岁，体重 = 80.3 ± 13.7千克）。
在热中性环境中穿着冷却背心或不穿冷却背心进行恢复，直到T(c)恢复到基线水平。
直肠T(c)、手臂T(sk)、恢复到基线T(c)的时间以及冷却速率。
在热应激试验期间，两组的T(c)均显著升高（3.6%），且在恢复30分钟时，T(c)均显著下降（2.6%）。虽然不显著，但背心组恢复到基线T(c)的时间比无背心组快22.6%（43.8 ± 15.1分钟对56.6 ± 18.0分钟），且背心组的冷却速率（0.0298 ± 0.0072摄氏度/分钟）与无背心组的冷却速率（0.0280 ± 0.0074摄氏度/分钟）无显著差异。恢复期间，背心组的T(sk)显著高于无背心组（2.1%），且两组在30分钟时均显著低于0分钟时（7.1%）。
我们不建议使用冷却背心来快速降低升高的T(c)。冰水浸泡仍应是快速冷却严重高温个体的护理标准。
