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   by Hiroshi Sawamura(澤村 博)



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        sprinttechnique.com
        updated 2014-10-7


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9. Correct Ground Contact According to Speed

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Correct Ground Contact According to Speed
 When jogging, the first contact is made with the whole sole of the foot as shown in Figure 3.
 When running at between 50 and 60 percent effort, there is less contact than when jogging as shown in Figure 2.
 This trend continues when the effort rate is increased to between 70 and 100 percent, and the area of the foot touching the ground in the initial decelerating contact is even smaller as shown in Figure 1. Most athletes do not realize it, but the heel also comes into contact with the ground, albeit for a fleeting moment.

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