flexor muscle
2.After analyzing the key technique of sprint-wiggling motion, specially analyzing the feature of hipbone motion of sprint-high-speed swing and level motion of having the hip as the axle in process of, the author considered that developing swing specific power be the first and developing general power be the second in power training of sprint surrounding tightly the power of groups of muscles of swing motion, and on the basis of initiatively developing muscle power of hip flexor and the equilibrium and harmony of upper limb power and lower limb power to improve the sprint technique, finally the author afforded the according means of swing specific power in training of sprint.
