Standing long jump refers to the long jump starting from a standing position without running up. It is a sport that integrates physical qualities such as bounce, explosiveness, physical coordination and technique.
Standing long jump is a sport to develop the explosive power and jumping ability of lower limbs. It requires the muscles of the lower limbs and buttocks to cooperate with the swing of the upper limbs, so it also needs some dexterity.
Influencing factors:
(1) power factor. Especially the explosive force of lower limb muscles, put forward higher requirements for the strength of ankle joint. Because the last force point of standing long jump is the forefoot (even toes), ankle plantarflexion needs considerable strength.
(2) the ability to coordinate efforts. Refers to the ability of pelvic muscle group and lower limb muscle group to coordinate exertion (including ankle joint). The correct sign of coordinated exertion is that the hips, knees and ankles can be pushed straight quickly and forcefully, and the upper limbs can swing harmoniously to play the role of belt, collar and lift.
(3) the swing of the arm. The standing long jump must swing straight arm, and the greater the swing amplitude, the stronger the action of taking, leading, lifting and pulling. Please pay attention to the observation that anyone who bends his arm and swings will inevitably cause the fluctuation of his upper body, thus affecting the jumping distance.
(4) Energy conversion. From standing to squatting, potential energy is converted into kinetic energy, which is equivalent to a certain run-up, which can effectively improve the initial speed and increase the distance of long jump.