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Page:Popular Science Monthly Volume 90.djvu/800

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��Popular Science Monthly

��Broad Jumps Under the head of broad jumps are in- cluded the standing one, two and three; the standing and running hop, step, and jump; and the run- ning broad jump. Broad jumping is adapted to athletes of all sizes, the most essential factors be- ing accurate

���start is made from one foot ; the other foot and the arms swing forward and backward in order to get an impetus.

In the running hop, step, and jump, there should be a fast run of about 80 ft. The hop should not

��This style is more difficult than the other two on account of the reverse twist

Stepping and a very powerful spring. To make the standing broad jump, stand with the feet together, the large joints (ball of the feet) just above the edge of the block. Swing the arms forward up, then downward and back as a preparatory ac- tion. Then incline the body forward, flex the thighs and legs at about right angles. In the act of jumping, use all the force possible in the forward arm swing and back lift as well as the leg spring. In sailing through the air raise legs and bend well forward. Just as the feet strike the

�����be high or there will be too much strain on alighting and the step and jump will be weak. Make the hop low, and the step moderate, and put tremendous effort in the high and broad jump. The running broad jump rules govern this event. In the running broad jump the greatest factors are speed, a good take-off, and a vigorous rising spring. Striding is impor- tant and should be practiced much. To help the stride place a mark about 20 ft. from the block, another about 50 ft., and the start at about 100 ft. Take a few long breaths before starting the run, gradually increase the speed to the finish and be sure to strike the striding mark with the correct foot. When near the 50-yd. mark hold the breath for the final effort. The last step should be

��Swing the arms up, down and back as a preparatory action

��ground give an additional forward bend and thrust of the arms to maintain the balance. The angle of the jumper's body as he leaves the block will determine whether he will jump high or low. The proper angle is not easy to get from the sharp edge of the block. In the standing hop, step and jump, the

���shorter than the others and the front half of the foot alone should be placed upon the block. The run should not be made too fast else it will be impossible to jump high enough. The position of the striding marks vary if there is a strong wind either ahead or behind. If you overstep the block

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