![]() Impulse is calculated as force multiplied by time. However, impulse and momentum are trainable qualities. ![]() Despite how much we might train, most of us will find it nearly impossible to run as fast as him. ![]() This means he’s been able to develop the ability to produce large amounts of force in a short space of time – he’s what physicists would call ‘impulsive’. Usain Bolt chose his parents wisely because he has a unique genetic code and was raised in an environment conducive to high performance. Generating significant force in a short space of time is the result of many integrated processes, including genetic factors, muscle fibre type composition, the ability of your nervous system to recruit motor units and the structure and ultra-structure of muscle. Tightness, weakness or dysfunction at different parts of the kinetic chain can negatively affect force transmission, and can also increase the risk of injury as other areas are forced super-compensate.īoxers should focus on improving lower body rate of force development, hip mobility, core strength, rotational/shoulder mobility, and most importantly technique to improve the effectiveness of their kinetic chain. This must all be performed with solid technique. The core and hip muscles must be strong enough to transfer this force through the mid-section and to the shoulders and then arms, which must be mobile enough to efficiently deliver the fist towards the target. To deliver hard, fast punches, the lower body must produce a large amount of force extremely quickly. During a punch, force is generated from the floor and transferred from foot to fist, at rapid rates via the kinetic chain. The kinetic chain describes the pattern that force transfer follows through the entire body during explosive actions.
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