... help to identify and correct problems with a technique. Despite these technical developments however, the well being of the athlete undoubtedly remains a sports biomechanists primary concern. The limits of speed, endurance and strength are pushed every day and new world records are produced every year. However, accompanied with these records is the presence of injury risk. This risk increases exceptionally when the stability of an athlete is threatened. An athlete's stability involves the level of '...difficulty required to disturb [their] equilibrium' (Hay, 1994). This stability is affected by '...the point at which the body's weight can be considered to act' (Sprunt, 1993). This point is known at the centre of gravity and is a useful concept for analysis of human movement. The centre of gravity is the point at which the entire mass or weight of the body is considered to be concentrated. An imaginary line that vertically dissects the ...

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