Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia.
Department of Physical Education and Sports Sciences, University of Limerick, Ireland.
Int J Sports Med. 2014 Jan;35(1):35-40. doi: 10.1055/s-0033-1343410. Epub 2013 Jun 18.
This study sought to (a) compare and contrast the effect of 2 commonly used cryotherapy treatments, 4 min of -110 °C whole body cryotherapy and 8 °C cold water immersion, on knee skin temperature and (b) establish whether either protocol was capable of achieving a skin temperature (<13 °C) believed to be required for analgesic purposes. After ethics committee approval and written informed consent was obtained, 10 healthy males (26.5±4.9 yr, 183.5±6.0 cm, 90.7±19.9 kg, 26.8±5.0 kg/m2, 23.0±9.3% body fat; mean±SD) participated in this randomised controlled crossover study. Skin temperature around the patellar region was assessed in both knees via non-contact, infrared thermal imaging and recorded pre-, immediately post-treatment and every 10 min thereafter for 60 min. Compared to baseline, average, minimum and maximum skin temperatures were significantly reduced (p<0.001) immediately post-treatment and at 10, 20, 30, 40, 50 and 60 min after both cooling modalities. Average and minimum skin temperatures were lower (p<0.05) immediately after whole body cryotherapy (19.0±0.9 °C) compared to cold water immersion (20.5±0.6 °C). However, from 10 to 60 min post, the average, minimum and maximum skin temperatures were lower (p<0.05) following the cold water treatment. Finally, neither protocol achieved a skin temperature believed to be required to elicit an analgesic effect.
(a) 比较和对比两种常用的冷冻疗法治疗，即 4 分钟的-110°C 全身冷冻疗法和 8°C 冷水浸泡，对膝关节皮肤温度的影响；(b) 确定这两种方案是否能够达到一种被认为具有镇痛效果的皮肤温度(<13°C)。在获得伦理委员会批准和书面知情同意后，10 名健康男性（26.5±4.9 岁，183.5±6.0cm，90.7±19.9kg，26.8±5.0kg/m2，23.0±9.3%体脂；平均值±标准差）参加了这项随机对照交叉研究。通过非接触式红外热成像技术评估髌区周围皮肤温度，并在治疗前、治疗后即刻以及此后每 10 分钟记录一次，共 60 分钟。与基线相比，两种冷却方式后即刻以及 10、20、30、40、50 和 60 分钟时，平均、最小和最大皮肤温度均显著降低（p<0.001）。全身冷冻疗法（19.0±0.9°C）后即刻和 10、20、30、40、50 和 60 分钟时的平均和最小皮肤温度均低于冷水浸泡（20.5±0.6°C）（p<0.05）。然而，从 10 分钟到 60 分钟，冷水处理后平均、最小和最大皮肤温度均较低（p<0.05）。最后，两种方案均未达到被认为具有镇痛效果的皮肤温度。
