[Functional plasticity of mammalian skeletal muscles under microgravity]

In the retrospective analysis of own experimental data and the literary overview of the slow-to-fast transformation of skeletal muscles (essentially postural and locomotor) in animals due to microgravity the authors scrutinize the muscle functional plasticity given heterodromous changes in the external mechanic field. Adaptation of the myofiber phenotype is ensured by polymorphism of muscle isoproteins and lability of the system providing energy for muscle contraction.