[Blood supply and oxygen consumption in the cat m. gastrocnemius during isometric tetanus in partial occlusion of the artery].

O2 consumption in resting m. gastrocnemius decreases in restriction of blood supply due to partial artery occlusion. This occurs in accordance with the degree of blood flow restriction. A dependence of postcontraction hyperemia on the degree of blood flow restriction was found. No hyperemia occurs in a severe restriction. In a less severe restriction the hyperemia occurs and a stronger one than in the control. The post-load increase of O2 consumption in partial artery occlusion occurs both in absence and in presence of the postcontraction hyperemia, but in the latter case the increase of O2 consumption is related to the degree of postcontraction increase of the blood flow.