[Oxygen tension in rat mixed skeletal muscle at a low diffusion coefficient].

Numerical simulation of the oxygen low diffusion coefficient (1.3.10-6 cm/sec) in a skeletal muscle with three types of fibres with different oxygen demands, has revealed: 1) an enlarged vascularisation of a fibre with high oxygen demand prevents the development of hypoxia because of shortening of the ways of oxygen diffusion from capillaries; 2) in a muscle with external layers consisting mainly of white fibres with low oxygen demand and deep layers of red fibres, the pO2 in the tissue and in the blood flowing from the layers, decrease with the depth.