Athletics (British Sports Library)

192 ATHLETICS sink as the foot roll goes through from heel to the toes, upon which the athlete rises for the final impetus of the spring. This phase of the jump is admirably illustrated by Sketch 1. The athlete has preserved the proper sprinter's running angle, even to the arm action and knee pick-up, and he has his body well over the leg which has accomplished a powerful downward drive. The swift and powerful throw-up of the leading knee is particularly important, and the arm action should also be noted. The arms have just finished their contribution to the speed run and will next be flung up and forward to help lift the body into the air. It will be noticed that the foot roll from heel to toes has been well carried out, and in consequence there is seen a powerful leg drive from the ball of the foot, with the body well in advance of the leg. Care must be taken not to exaggerate the approach speed and momentum at the expense of proper take-off _form and adequate body rise, such as is shown in Sketch 2. In this picture, which shows admirable balance, it should be noted that the arms and legs are working in concert, and another most important matter, that the leg from which the spring was made has not been drawn up too quickly. . From the position shown, the athlete can ad6pt either of the two recommended forms of the mid-air phase of the jump.