Harichaux P, Gorin J, Viel E
Phlebologie. 1980 Jul-Sep;33(3):461-74.
The authors use Doppler examination to study the functional hyperaemia of healthy muscle during muscle contraction. In the leg, isometric contraction of the gastrocnemii produces: 1) a flush effect, rapid but transient (1 to 2 sec.); 2) next a speed intermediate between that at peak and that at rest; 3) finally, a post-contractile hyperaemia. In the case of isotonic contractions, the same type of tracing is oberved more clearly for dorsal flexion of the foot (dorsiflexion) than for plantar flexion (extesion), and this occurs whether the mode of movement is active or passive. In the normal untrained subject, fatigue due to repetition of movement occurs very quickly, whatever the conditions, and results in a diminution of the venous flush. But in the trained subject, this effect does not appear, or not till much later.
作者们使用多普勒检查来研究肌肉收缩期间健康肌肉的功能性充血。在腿部，腓肠肌的等长收缩会产生：1）一种充血效应，迅速但短暂（1至2秒）；2）接着是介于峰值速度和静息速度之间的中间速度；3）最后是收缩后充血。在等张收缩的情况下，对于足背屈（背屈）比足底屈（伸展）能更清楚地观察到相同类型的描记图，并且无论运动模式是主动还是被动都会出现这种情况。在未经训练的正常受试者中，无论在何种情况下，由于重复运动导致的疲劳都会很快出现，并导致静脉充血减少。但在经过训练的受试者中，这种效应不会出现，或者直到很久以后才会出现。
