The differences of Isokinetic test results of knee muscle groups is the reason made different levels of elite or sub-elite highjumpers.
结论：跳高运动员膝关节肌群等速测试结果的差异是造成一、二级跳高运动员成绩差异的原因之一。
2
BASE jumpers take a flight off an 876-foot-high bridge over the New River Gorge.
低空跳伞者从876英尺高的新河峡大桥跳下。
3
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.