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Biomechanics in Sport

Sports Biomechanics
  • Biomechanics in sport includes a detailed analysis of sports movements in-order to minimize the risk of injuries and improve sports performance.
  • Sports and Exercise Biomechanics encompasses the area of science concerned with the analysis of human movement mechanics. 

Biomechanical Language

  • Force – simply a pull or push

Types of motion

  • linear motion
  • rotational motion
  • general motion

Velocity – the rate of change of speed.

Acceleration – the rate of change of velocity.

Deceleration the rate of change of speed in the negative.


Momentum – is the quantity of motion a body has:

Momentum = Weight x Velocity

Angular Momentum – is the quantity rotational motion:

Angular Momentum = Moment of Inertia x Rotational Velocity

Moment of Inertia – is simply related to size or length

  – Reducing the size will  increase rotational velocity (arms in sprinting; legs in hammer throw)

  – Increasing the size will reduce the rotational velocity (flight in the Long Jump).

Summation of forces

  • Use all joints that can be used when executing a skill to bring about efficiency.
  • Use every joint in order.
Summation of forces