Correlation of structural and functional properties of leg muscles under hypo- and hyperdynamia

Normal men at the age of 17-18 years were studied – non-sportsmen (18), track and field athletes (22) and wrestlers (20). Moreover, 8 adult patients at the age of 18-44 years with congenital disorders of the leg longitudinal growth in one of the limbs before and after surgical equalization of limb lengths has been studied as well. As it has been found, the indices of the thickness of muscle contractile part, those of the slope of muscular fascicles and the indices of dynamometry are closely correlated and are determined by the level and character of limb functional loading. Muscular hypotrophy of the limb involved in patients leads to principal decrease of the slope of muscular fascicles, that means to decrease of muscular physiological diameter.