1. Introduction - Forces
 The term Biomechanics refers to internal
and external forces which act on the body,
and the effects produced by those forces.
 Biomechanics is a very useful science in the
study of human performance especially in
the area of perfecting technique.

2. Forces
 Internal Forces – the
contraction of muscles to
move bones and produce
movement
 E.g. A bicep curl where the
bicep contracts to move the
forearm (radius and ulna)

3. Forces
 External Forces –
are forces which act
outside the body
 E.g. – contact with
the ground, wind, air
and water resistance.