Action of testosterone on some biochemical parameters related to the energy metabolism of the skeletal muscle.

The effect of intramuscular administration of testosterone propionate was studied on rat gastrocnemius muscle. Muscular glycolytic substrates and Krebs' cycle metabolites (glycogen, glucose, glucose-6-phosphate, pyruvate, lactate, citrate, alpha-ketoglutarate, succinate, malate), related aminoacids (glutamate, alanine, ammonia), energy store and mediators (creatine phosphate, ATP, ADP, AMP) and the energy charge potential were evaluated. The influence of the factors: testosterone dose, time course of treatment and sex of animals was investigated, no relevant changes being noticed.