[Change in the content of free amino acids in rat organs and tissues during hypokinesia].

Variations in the content of free amino acids in the gastrocnemius muscle, myocardium and plasma of rats were measured during hypokinetic and post-hypokinetic periods. It was shown that 35-day hypokinesia led to an increase of almost all amino acids in the gastrocnemius muscle and 60-day hypokinesia resulted in their decrease. Similar changes were followed in the myocardium. Variations in the content of free amino acids in the plasma were identified at every experimental stage. Changes in the protein metabolism persisted long after an exposure of the animals to prolonged hypokinesia.