Thorsson O, Lilja B, Ahlgren L, Hemdal B, Westlin N
Med Sci Sports Exerc. 1985 Dec;17(6):710-3. doi: 10.1249/00005768-198512000-00016.
Local blood flow was measured with 133Xe clearance technique in eight male distance runners, where one leg was cooled for 20 min by applying two "instant cold packs" on the quadriceps muscle. An initial cooling period after resting was followed by a second cooling period 10 min after running. Skin temperature was maximally reduced after 4.5 min of cooling, both at rest and after running, by 15 degrees C and 14.9 degrees C, respectively. During the first 5 min of cooling no reduction of blood flow was seen. After 10 min of cooling blood flow was significantly reduced in the cooled compared to the control leg by 49% (P less than 0.05) after resting and 34% (P less than 0.05) after running. A maximum reduction of blood flow by 66 and 69% (P less than 0.01), respectively, was seen 10 min after the cooling period. In the event of an acute injury, this delayed reaction of cryotherapy on intramuscular blood flow should be carefully considered.
采用¹³³Xe清除技术对8名男性长跑运动员的局部血流进行了测量，其中一条腿通过在股四头肌上放置两个“速冷包”进行20分钟的冷却。休息后的初始冷却期之后是跑步后10分钟的第二个冷却期。在休息和跑步后，冷却4.5分钟时皮肤温度均降至最低，分别降低了15℃和14.9℃。在冷却的前5分钟内，未观察到血流减少。冷却10分钟后，与对照腿相比，休息后冷却腿的血流显著减少49%（P<0.05），跑步后减少34%（P<0.05）。冷却期10分钟后，血流分别最大减少66%和69%（P<0.01）。在急性损伤的情况下，应仔细考虑冷冻疗法对肌肉内血流的这种延迟反应。
