Chapman A E
Can J Appl Sport Sci. 1980 Dec;5(4):215-9.
Subjects performed supination and pronation of the forearm against an inertial load with maximal voluntary effort, from either rest or when arresting the opposite motion of the load (a wind-up). The angular velocities produced at the mid-range of forearm movement were significantly greater with wind-up than without. The angle from which the movement began was significantly increased by wind-up. Isometric contractions produced torques which varied a great deal through the range of motion. While it was not possible to identify the physiology effects of wind-up, consideration was given to techniques which would achieve this aim. Wind-up was discussed in the context of skilled activity where sustained maximal contractions are unlikely throughout the activity.
受试者以最大自主努力，在静止状态或阻止负荷的反向运动（预拉伸）时，进行前臂的旋后和旋前对抗惯性负荷。与无预拉伸相比，在前臂运动的中间范围产生的角速度在有预拉伸时显著更大。预拉伸显著增加了运动开始的角度。等长收缩产生的扭矩在整个运动范围内变化很大。虽然无法确定预拉伸的生理效应，但考虑了实现这一目标的技术。在不太可能在整个活动中持续进行最大收缩的熟练活动背景下讨论了预拉伸。
