Особенности моторного контроля здоровых добровольцев в пассивном экзоскелете нижних конечностей

Abstract

Introduction. In an observation on 24 healthy young male volunteers, the effect of the passive exoskeleton of the lower extremities on motor control was studied. In the exoskeleton, a was studied, which is an intermediate state between standing and sitting - a hybrid Methods. We analyzed the data of surface electromyography from Musculus quadriceps femoris and Musculus tibialis anterior of both legs, data from the force platform, and parameters of instruction execution in a task with visual feedback on the support reaction during alternate manipulation with both hands. One of the conditions influencing the parameters of motor control in the hybrid posture is the predominant type of sensory organization in the usual vertical posture. Results Differences between the “hybrid posture” under the described conditions from a simple vertical were more clearly revealed during rhythmic purposeful swinging of the sample volunteers in the sagittal and frontal planes, as a redistribution of the activity of the muscles under study and differences in the swinging amplitude in the frontal plane for conventional “proprioceptors” and “visuals”. Discussion. The control of the upper limbs (pressure on the fixed handle due to the instruction) practically did not depend on the peculiarities of the sensory organization of the under the conditions of the given visual control. In the variants of the vertical with and without exoskeleton, there was a difference in the complexity of manipulation (more in the hybrid posture) with the same effectiveness.