Trunk strength n combined motions of rotation and flexion/ extension in normal young adults

摘要

Thirty-eight normal healthy young subjects (14 males, 24 females) with mean ages of 23 years (males) and 21 years (females), performed 36 functional rotational tasks of the trunk. The subject's lower extremities were stabilized in a stabilizing platform, allowing the entire motion of flexion-rotation and extension-rotation to take place in the trunk. Of these task, 18 were isometric and the other 18 were isokinetic. The isometric tasks consisted of flexion-rotation and extension- rotation from a 20°, 40°and 60° flexed trunk in 20°, 40°and 60°of axial rotation.