小児の姿勢制御機構について

抄録

Postural stability in children was investigated from the point of postural strategy (visual, vestibular, somatosensory) in response to the change of position, velocity and acceleration on the foot pressure of the soul and distension of the muscle spindles, and head position. In order to clarify this study, we investigated the degree of contribution o f the input from each receptor in maintaining postural control and the kind of receptor synergy in children and adults. Postural stability was analyzed by the change of displacement of the foot pressure on the force platform. The subjects were applied vibration stimulations to the calf muscles to deprive informationfrom proprioceptive organs or give misleading information to the central nervous system. The analysis was performed with variability of the cumulative distribution in position, velocity and accerelation data. The variability of velocity in children was high in vibration. The variability acceleration was highly significant for both vibration and non-vibration.
In conclusion, postural stability in children was attributed to prematurity of the central nervous and musculoskeletal systems and unbalanced body mass.