Oganov V S, Skuratova S A, Shirvinskaia M A
Kosm Biol Aviakosm Med. 1981 Jun-Jul;15(4):58-61.
Contractile properties of glycerinated fibers of skeletal muscles of rats flown for 18.5 days on Cosmos-936 were investigated. In slow antigravitational muscles (soleus m. and triceps brachii m.), decrease in the amplitude of isometric tension and performance as well as acceleration of the contraction development were observed. The studies point to a high specificity of reactions of skeletal muscles to the experimental conditions, depending on their functional specialization. It is suggested that changes in contractile properties of myofibrillar proteins may contribute to the adaptive rearrangement of functional properties of antigravitational muscles under the influence of space flight.
