在这些患者模仿步行动作，进行屈膝运动时，研究者检查其脑MRI的变化。
Researchers checked brain MRIs while participants did knee-flexing exercises that mimic walking.
滑冰时的屈膝姿势意味着大腿在不停地运动。
The bent knee position means that the thighs are working continuously.
少年女子跳远运动员在着板瞬间的起跳腿膝角、起跳腿髋角、以及起跳过程中起跳腿的最大屈膝角都小于高水平女子跳远运动员。
The take-off leg knee joint, hip joint Angle when they get to the board and the most keen Angle in the take-off process are all smaller than those of high level female long jumpers.
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