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Technical and biomechanical knowledge of repeated efficient movements help in avoiding injuries. Jogging causes strong shocks that all too often are absorbed by the foot’s upper articulations. The shock waves created by each stride can be up to 7 times the body weight each time the heel touches the ground. Sometimes the weight is more on the forefoot. In this case the foot’s structure can absorb up to 4 times the body weight.
Considering the bone structure of the foot, we observe the presence of more bones on the median column, enabling propulsion and adaptation to the ground surface. The foot’s external column is created for stability and the center of gravity is found when stepping on the ground as well as in a static position. While jogging, we should avoid prolonged leaning on the foot’s external column; otherwise, this can result in lesser efficiency, a loss of momentum, as well as a higher need of energy.
A jogger with ill-fitted shoes is exposed to unnecessary risk, loss of performance, early wear and tear of the joints, recurring knee and back pain and increased risk of injury to the foot and ankle. The ideal surface to jog on is usually a track and field run made of rubber materials thus increasing shock absorption. Jogging on grass or earth is also recommended. Most joggers practice their sport on hard or harmful surfaces such as streets and sidewalks. When the foot makes contact with the ground, the force of impact is immediately felt in the foot and knee articulations, as well as the spine. A shoe and sole adapted for the sport enthusiast offers adequate absorption all the while protecting the upper articulations.
In order to limit muscular fatigue, we must find a way to increase the efficiency of our movements. Any twisting manoeuvres and shifting of weight from the outside of the foot, inwards, must be reduced. Special attention should be brought to the propulsion phase: the forefoot is on the ground 75% of the time. The materials indications: the forefoot part of the shoe must have better resiliency and a capacity for restitution and propulsion. They must be different from those of the hind foot, which are absorbent.
