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If that promotes the development of fast-twitch muscle fibres in growing foetuses, that could add to the Jamaican edge. The truth is, we donât have enough information to draw firm conclusions about the Jamaican dominance of sprinting. But there is good reason to dig deeper â and it has nothing to do with athletics. We now have evidence that extreme stress, heat, cold, malnutrition and pollution (including tobacco smoke) trigger changes in the way genes are activated or silenced.
Sprinting uses the same muscles as running, but requires that they are considerably more limber for short bursts of speed while avoiding injury. Running is powered by the legs, hips and glutes, so training the same muscles with a focus on speed will prepare you for sprinting.While training, avoid raising on the toes or pumping too high with the arms. Allow the primary muscles used for running to provide the power to sprint.he quadriceps are the muscles at the front of the thighs. These muscles raise the leg and propel the runner forward. Muscles throughout your body work in coordinating pairs.