Klabunde R E, Johnson P C
Am J Physiol. 1977 Apr;232(4):H411-7. doi: 10.1152/ajpheart.1977.232.4.H411.
Reactive hyperemia was examined in individual capillaries of the red anterior (ALD) and white posterior (PLD) latissimus dorsi muscles of the anesthetized chicken following total blood flow occlusion of 3.5-180 s in length. Capillary red cell velocities were measured by the dual-slit photometric technique. The control capillary velocities in the ALD and PLD were 0.56 +/- .03 (SE) and 0.34 +/- .03 mm/s, respectively. With increasing occlusion lengths, the reactive hyperemia peak velocity, hyperemia duration, and excess flow were found to increase progressively in both muscles suggesting a metabolic origin for the response. The ALD showed a greater peak reactive hyperemia flow than the PLD following occlusion lengths of 7-60 s and a greater excess flow following occlusion lengths of 15 s and longer. However, when these data were normalized to control velocities by calculating the peak-to-control velocity ratio and percent flow debt repayment, no significant differences were found between the two muscles. Furthermore, the reactive hyperemia durations were similar in the two muscles at each occlusion length. These data demonstrate that reactive hyperemia is similar in two muscle types which are known to differ considerably in resting metabolism and anaerobic capacity.
在麻醉鸡的红色前背阔肌（ALD）和白色后背阔肌（PLD）的单个毛细血管中，在3.5 - 180秒的全血流阻断后检测反应性充血。通过双缝光度测量技术测量毛细血管红细胞速度。ALD和PLD中的对照毛细血管速度分别为0.56±0.03（SE）和0.34±0.03毫米/秒。随着阻断时间的增加，发现反应性充血峰值速度、充血持续时间和过量血流在两块肌肉中均逐渐增加，提示该反应具有代谢起源。在7 - 60秒的阻断时间后，ALD的反应性充血峰值流量高于PLD，在15秒及更长的阻断时间后，ALD的过量血流更多。然而，当通过计算峰值与对照速度比和血流亏欠偿还百分比将这些数据归一化至对照速度时，两块肌肉之间未发现显著差异。此外，在每个阻断时间下，两块肌肉的反应性充血持续时间相似。这些数据表明，反应性充血在两种已知在静息代谢和无氧能力上有显著差异的肌肉类型中是相似的。
