健常人における両脚跳躍動作の跳躍高を決定する因子の分析

• Published in: 理学療法学 Vol. 41; no. 5; pp. 290 - 300
• Main Authors: 中俣 修, 新田 收, 古川 順光
• Format: Journal Article
• Language: Japanese
• Published: 日本理学療法士学会 2014; Japanese Society of Physical Therapy
• Subjects: 下肢; 両脚跳躍動作; 体幹
• ISSN: 0289-3770; 2189-602X
• DOI: 10.15063/rigaku.kj00009469688

Purpose: The purpose of this study was to reveal correlations between the posture and movement of the trunk and lower limbs and the hopping height in the ground contact phase of two-legged hopping in the place and to clarify factors influencing the hopping height. Methods: The subjects were 19 healthy males. The hopping at 130 of motion pitch per minute was measured by using a three-dimensional motion analysis system and a force plate. The ground contact phase was divided into the first-half and latter-half phases on the basis of a point of the time when the hip reached its lowest level in a vertical direction (point of lowest hip joint level), then correlations between the following parameters and the hopping height were analyzed: Postures at the ground contact point, point of lowest hip joint level, and takeoff point; motion range in the first-half and latter-half phases; and timing of motion direction change-over (motion change-over time). Results: There were correlations of the hopping height with the heights of the hip at point of lowest hip joint level, the motion range of the thorax and hip joint in the first-half phase, the moving range of the hip joint in the first-half and latter-half phases, and with motion change-over time for the thorax and the knee joint. Two parameters, i.e., motion change-over times for the knee joint and the moving range of the hip joint in the latter-half phase, were extracted as predictive factors for the hopping height. Conclusion: The factors of determination of the hopping height were revealed to be only the parameters involved with lower limb, though movement of the thorax and lower limb was correlated with the hopping height. 【目的】本研究では両脚跳躍動作の接地相における体幹と下肢の姿勢・運動と跳躍高との関連性,跳躍高を決定する因子をあきらかにすることを目的とした。【方法】対象は健常男性19名とした。動作ピッチ130回/分での両脚跳躍動作を三次元動作解析装置と床反力計を用い計測した。股関節が鉛直方向最下点となった時点(股最下時点)をもとに接地相を前半・後半相に分け分析した。接地時点・股最下時点・離地時点の姿勢,前半・後半相の運動範囲,運動方向の切り換えのタイミング(運動切り換え時間)と跳躍高との関係を分析した。【結果】跳躍高と関連を認めた項目は,股最下時点での股関節の高さ,前半相での胸郭と股関節の運動範囲,前半・後半相での股関節の移動範囲,胸郭と膝関節の運動切り換え時間であった。跳躍高を予測する項目は,膝関節の運動切り換え時間,後半相での股関節の移動範囲の2項目であった。【結論】胸郭と下肢の運動が跳躍高と関連するものの,跳躍高を決定する因子は下肢の項目に集約された。