Isotonic contractions – these occur when a muscle contracts and changes length and there are two types: Isotonic concentric contraction – this involves the muscle shortening. The origin and ...

This system is mainly concerned with producing movement through muscle contraction. This section explores the different types of muscles in our body and their involvement in sporting activities.

all of which put minimal stress on the knees. This type of activity can help increase blood flow to the muscles and allow them to be more flexible. Do not point the toes or flex the foot on the ...