This study investigated the effect of push-off facilitation by protrusions attached to the insole tip (PRT This study investigated the effect of push-off facilitation by protrusions attached to the insole tip (PRT insole) on lower limb joint range of motion (ROMs) and step length (SL) during brisk gait. Sixteen healthy insole) on lower limb joint range of motion (ROMs) and step length (SL) during brisk gait. Sixteen healthy males performed treadmill walking under three different conditions: CONTROL walked as usual, INST males performed treadmill walking under three different conditions: CONTROL walked as usual, INST was instructed to extend SL with an enhancing push-off at the terminal stance phase, and PRT was asked was instructed to extend SL with an enhancing push-off at the terminal stance phase, and PRT was asked to extend SL while attempting to step on protrusions of PRT insoles. A 3D-motion capture system with to extend SL while attempting to step on protrusions of PRT insoles. A 3D-motion capture system with infrared cameras was used to analyze the gait. In the INST condition, the hip and ankle ROMs and SL infrared cameras was used to analyze the gait. In the INST condition, the hip and ankle ROMs and SL increased only during push-off attention. In the PRT condition, although the hip joint ROM increased only increased only during push-off attention. In the PRT condition, although the hip joint ROM increased only during the use of PRT insoles, the ankle joint ROM and SL increased significantly during and immediately during the use of PRT insoles, the ankle joint ROM and SL increased significantly during and immediately after the use of the insoles compared to before use. This increase in ROM may be due to increased plantar after the use of the insoles compared to before use. This increase in ROM may be due to increased plantar flexion during the terminal stance phase. Therefore, the present results suggest that the PRT insole may flexion during the terminal stance phase. Therefore, the present results suggest that the PRT insole may be used to extend SL by enhancement of push-off during warm-up exercises, and that the effect of SL be used to extend SL by enhancement of push-off during warm-up exercises, and that the effect of SL extension may remain even without the insole during subsequent exercises. extension may remain even without the insole during subsequent exercises.
本研究は,インソール先端部に取付けた突起物(突起インソール)による速歩時の蹴出しが,下肢関 節可動域や歩幅に及ぼす影響を検討した.健常男性16名に3条件でトレッドミル歩行を実施した:普通 条件はいつも通り歩行し,指示条件は立脚終期の蹴出しにより幅を伸ばすよう指示し,突起条件は突起 インソールの突起を蹴出しながら歩幅を伸ばすよう指示した.指示条件では,蹴出しによる歩幅延長の 指示時のみ,股関節および足関節可動域と歩幅が増加した.突起条件でも股関節可動域は突起インソー ル使用時のみ増加したが,足関節可動域と歩幅は,突起インソール使用前に比べて,使用時および使用 直後で増加した.この関節可動域増加は立脚終期の足関節底屈増加によるものと考えられる.これらの 結果は,準備運動などで突起インソールにより歩幅延長を促すことで,その後の運動では,突起インソー ルを使用せずとも歩幅延長効果が残存する可能性を示している. (キーワード:歩行,足関節,足関節底屈,立脚終期,触覚)