Potočnik N, Lenasi H
Clin Hemorheol Microcirc. 2016 Nov 4;64(1):65-75. doi: 10.3233/CH-162045.
This study investigated the responses of skin blood flow (SkBF) in glabrous and nonglabrous skin to graded submaximal dynamic exercise and its recovery. We enrolled eight healthy young men with comparable maximal oxygen uptake (VO2max). Laser-Doppler flux (LDF) was assessed on the finger pulp (glabrous site) and the volar forearm (nonglabrous site) simultaneously with skin temperature, heart rate and blood pressure; cutaneous vascular conductance (CVC) was calculated. Subjects were monitored before (baseline), during and 25 minutes after incremental cycling. CVC in the pulp decreased with the onset of exercise (0.53±0.09AUmmHg-1 vs. baseline 1.23±0.25AUmmHg-1, p = 0.006), and persisted low until exercise cessation, whereas CVC in the forearm started to increase at 60% of subjects' VO2max, attaining its maximum at the highest exercise load (0.44±0.11AUmmHg-1 vs. baseline 0.12±0,03AUmmHg-1, p = 0.017). In the recovery, CVC in the pulp attained a higher plateau value compared to baseline (1.51±0.22AUmmHg-1, p = 0.021), interrupted by abrupt transient falls of CVC. On the forearm, CVC subsequently returned to its baseline. SkBF of glabrous and nonglabrous sites adjust in an opposite manner to graded exercise load and also differ during recovery.
本研究调查了无毛皮肤和有毛皮肤的皮肤血流量（SkBF）对分级次最大动态运动及其恢复的反应。我们招募了八名最大摄氧量（VO2max）相当的健康年轻男性。在测量手指腹（无毛部位）和前臂掌侧（有毛部位）的激光多普勒血流（LDF）的同时，测量皮肤温度、心率和血压；计算皮肤血管传导率（CVC）。在递增骑行前（基线）、期间和之后25分钟对受试者进行监测。手指腹的CVC在运动开始时下降（0.53±0.09AUmmHg-1对比基线1.23±0.25AUmmHg-1，p = 0.006），并且一直保持较低水平直到运动停止，而前臂的CVC在受试者VO2max的60%时开始增加，在最高运动负荷时达到最大值（0.44±0.11AUmmHg-1对比基线0.12±0.03AUmmHg-1，p = 0.017）。在恢复过程中，手指腹的CVC达到了一个比基线更高的平稳值（1.51±0.22AUmmHg-1，p = 0.021），期间被CVC的突然短暂下降打断。在前臂，CVC随后恢复到基线水平。无毛和有毛部位的SkBF对分级运动负荷的调整方式相反，并且在恢复过程中也有所不同。
