Features of the Visuomotor Tracking Skill Formation Using Isometric Regulatory Organs in Orthopedic Patients at Different Stages after Elimination of Asymmetry in Lower Extremity Length.

Abstract In orthopedic patients, the formation of the motor skill of rapid and precise reproduction of an effort by the anterolateral muscles of the shin of the elongated extremity was significantly decelerated as compared to the intact one when tested at 5–50% of the maximum muscular force of the intact extremity. A correlation was observed between the tracking square error, which is an index of precision of instrumental motor reactions, and the dynamic activation indices (the ratios between the electromyogram integrals and the force momentum impulse), which characterize energy expenses, and was assumed to reflect specific optimization of sensorimotor reactions at different power loadings. Both with the elongated and the intact extremities, the interactive search for and fixation of the optimal motor program was most effective in a certain range of muscular loading. The results can serve as a basis for choosing specific rehabilitation programs for orthopedic patients. [ABSTRACT FROM AUTHOR]