MOTOR CONTROL ABILITY OF MIDDLE AND HIGH AGES ON PURSUIT TRACKING OF LEG / 体力科学

ABSTRACT

The purpose of this study was to clarify compensating element of motor control system on the leg, and to analyze the effect of the variation in various loads on pursuit movement in the exercise of flexion and extension of the leg. The subjects for this study were sixteen healthy males, from 22 years of to 64.<BR>As the means of the experiment, the pursuit movement of the leg was used and the sitting position was applied.<BR>The experiment conditions were dicided to sinu waves of 0.4 Hz of exercise rhythm and 1, 2, 4, and 8kg loads attached on the leg.<BR>The following results were obtaind.<BR>1. About amplitude ratio of pursuit movement, the optimal control was young ages (22-29 years) of extension, but middle and high ages were shown lower than command amplitude. When leg is flexed, the pursuit amplitude of all subjects were larger than command amplitude.<BR>2. About exercise rhythm, both flexion and extension, young ages were shown about 5-10 degree slower than that of command wave, but middle and high ages were shown both slow and quick on -15-20 degree.<BR>3. About error of between command and response waves, both young and middle ages were shown about 5-15cm<SUP>2</SUP>. The high ages were shown a value two times as much young and middle ages.