Applied anatomy and kinesiology; the mechanism of muscular movement . Fig. 180Figs. 179 and 180.—The headspring. Start and finish. 298 GYMNASTIC MOVEMENTS should be balanced on the head and hands with hips fully flexed andknees nearly straight (Fig. 179). When this position is gained theelbows should be gradually extended by action of the triceps untilthe body begins to fall backward. A sudden and strong extensionof arms, trunk and hips should now be made by use of all theextensor muscles, projecting the body into the air feet first, in adirection diagonally upward and backward. If this is fol
Applied anatomy and kinesiology; the mechanism of muscular movement . Fig. 180Figs. 179 and 180.—The headspring. Start and finish. 298 GYMNASTIC MOVEMENTS should be balanced on the head and hands with hips fully flexed andknees nearly straight (Fig. 179). When this position is gained theelbows should be gradually extended by action of the triceps untilthe body begins to fall backward. A sudden and strong extensionof arms, trunk and hips should now be made by use of all theextensor muscles, projecting the body into the air feet first, in adirection diagonally upward and backward. If this is followed bya quick flexion of trunk and limbs the body will turn enough tocome to the mat with head up and feet on the mat, and erect posi-tion can be gained by use of the extensor muscles again (Fig. 180).. Fig. 181.—-The handstand. The handspring resembles the headspring but is taken with armsextended up at vertical position beside the head. A run is usuallyneeded to give the required momentum for turning completelyover. Ending the run by bending completely at the hips andwith the hands on the floor, with a jimip as in any running jump GYMNASTIC MOVEMENTS d. the body is fully extended with enough momentum to project itinto the air and this is followed by a strong push with the the coordination is learned it is usually necessary to flex thelimbs and spine to gain a position on the feet, but with skill thefinish can be made standing fully erect. The same alternate use ofthe flexors and extensors of the trimk and limbs is here combinedwith strong work of the arm-raising muscles, triceps, and extensorsof the wrist. The handsta7id is begun like the handspring except that it istaken from standing position without a run and is started slowlyand carefully. With hands on the floor
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