[Changes in the enzyme-active region of the neuromuscular synapse of the gastrocnemius muscle in rats during hypokinesis].

Restraint of white rats in fight cages leads to diminution of the area of neuromuscular synapse with an intricate structure of the enzyme-active region and reduction of the number of neuromuscular synapses per one fiber in the gastrocnemius muscle. Signs of dystrophy of neuromuscular synapses with the intricate enzyme-active region are observed. These changes arise by day 14 of hypokinesia and become more pronounced by day 28.