Influence of cold-water immersion on limb blood flow after resistance exercise
Influence of cold-water immersion on limb blood flow after resistance exercise
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DOI：
10.1080/17461391.2017.1279222
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发表时间：
2017-06-01
影响因子：
3.2
通讯作者：
Gregson, Warren
中科院分区：
文献类型：
--
作者：
Mawhinney, Chris;Jones, Helen;Gregson, Warren
本研究确定了冷水（8 摄氏度）和凉水（22 摄氏度）浸泡对抗阻运动后下肢和皮肤血流的影响。 12 名男性完成 4 组 10 次重复的最大深蹲运动，然后在不同日期以随机顺序浸入、半躺于 8 摄氏度或 22 摄氏度水中 10 分钟，或以坐姿休息（对照）。浸泡前后测量直肠和大腿皮肤温度、肌肉温度、大腿和小腿皮肤血流量和股浅动脉血流量。计算血管电导指数（流量和血流量/平均动脉压）。较冷的水最大程度地降低了大腿皮肤温度和深层肌肉温度 (P < .001)。所有三项试验中直肠温度的降低程度相似（0.2-0.4 摄氏度）（P = 0.69）。在两种冷却条件下浸泡后，股动脉电导率相似，两种条件下的股动脉电导均显着低于浸泡后的对照 (55%) (P < .01)。同样，与对照组相比，在两种冷却条件下浸泡后，大腿和小腿皮肤血管收缩更大（40-50%）（P < .01），冷却条件之间没有差异。这些发现表明，冷水和凉水同样会降低股动脉和皮肤血流反应，但不会降低抗阻运动后的肌肉温度。
This study determined the influence of cold (8 degrees C) and cool (22 degrees C) water immersion on lower limb and cutaneous blood flow following resistance exercise. Twelve males completed 4 sets of 10-repetition maximum squat exercise and were then immersed, semi-reclined, into 8 degrees C or 22 degrees C water for 10-min, or rested in a seated position (control) in a randomized order on different days. Rectal and thigh skin temperature, muscle temperature, thigh and calf skin blood flow and superficial femoral artery blood flow were measured before and after immersion. Indices of vascular conductance were calculated (flux and blood flow/mean arterial pressure). The colder water reduced thigh skin temperature and deep muscle temperature to the greatest extent (P < .001). Reductions in rectal temperature were similar (0.2-0.4 degrees C) in all three trials (P = .69). Femoral artery conductance was similar after immersion in both cooling conditions, with both conditions significantly lower (55%) than the control post-immersion (P < .01). Similarly, there was greater thigh and calf cutaneous vasoconstriction (40-50%) after immersion in both cooling conditions, relative to the control (P < .01), with no difference between cooling conditions. These findings suggest that cold and cool water similarly reduce femoral artery and cutaneous blood flow responses but not muscle temperature following resistance exercise.