The biggest characteristic of running that acts on the body is that it induces strong thrust in the plantar sesamoid bone, and proper provision of this strong thrust is a key factor in determining the health of the body. Factors that determine the magnitude of plantar sesamoid thrust during walking include the following.
- The higher the height of the foot lifted from the ground, the greater the thrust the sesamoid bone will exert.
- The more the left and right back muscles are relaxed, the greater the thrust exerted.
- The more the landing angle of the soles of the feet is closer to the letter 11 than the letter V, the greater the exerted thrust.
- The more the heel landing position is on the inner side, the greater the thrust exerted.
- The greater the stride length on the same foot, the greater the thrust exerted.
- The larger the stride of the other foot, the greater the thrust.
- The greater the gaze angle of the head, the greater the thrust exerted.
- The greater the lifting angle of the toes relative to the plantar surface just before landing, the greater the thrust exerted.
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