Measurement and Analysis on Enduring Ability of Jump Leg as Adopting Deep-jump and Vertical-jump by High Jumpers

This article employed the kinematics and kinetics methods to study the enduring ability of low limb muscle strength of high jumpers.The results reveals:First,it is possible to use the deep-jump and vertical-jump as the expert exercise to improve the jumping ability of high jump athlete.Second,the enduring ability of jump leg will affect the support and stroke phase directly,and it will do much harm to the jump performance eventually.Third,the enduring ability of knee joint and ankle joint is weak for the second-level high jump athlete,especially the ankle joint.Meanwhile the knee joint is the key joint to the support phase.Fourth,the suitable height is(35.0±4.56)cm and the most height is(48.00±3.78)cm.Fifth,the impact load and touch height produce the suitable deep-jump height,meanwhile,the bounce height and run up touch height produce the suitable vertical-jump height.They are high correlation.Both are important guidelines to estimate the jump ability of the high jump athlete.