[The effect of the dynamic component in the mechanical deformation of the vessels on the blood supply to the skeletal muscles]. / Vliianie dinamicheskogo komponenta mekhanicheskoi deformatsii sosudov na krovosnabzhenie skeletnykh myshts.

Dynamic and static distension of the cat m. gastrocnemius by 10-20% of initial length induced similar hyperemia provided the same amplitude of the distension and a common impulse of passive strength are preserved. The post-elongation hyperemia did not depend on changes in the blood flow during distension or on increase in the number of dynamic components of the distension. Isolated application of muscle vibration induced post-vibration hyperemia whereas the combination of the 8-24 Hz vibration with continuous distension of the muscle exerted no effect on the parameters of the post-elongation hyperemia.

Activity evoked in hand muscles by the stretch reflex of m. biceps in man.

Experiments were performed on six volunteers, in order to investigate the effect of the activity of the m. biceps branchii on the median and ulnar nerves. The reflex of the m. biceps brachii was evoked by a sudden stretch and the EMG responses of the m. biceps brachii, m. abductor dig. V. and thenar muscles were recorded. Hand muscles produced early EMG potentials, the latency between them, as well as the onset of the electrical response recorded from the m. biceps brachii, being about the same as the conduction time of nerve excitation from biceps to the hand muscles. The possible mechanisms of the origin of the early EMG activity recorded from the hand muscles are discussed.