Conceptually the movements from the feet to the shoulders are relatively straight forward.  They consist of generating the whole body kinetic chain using clockwise (for right-handers) or anti-clockwise (for left-handers) rotations about the central vertical line down through the body.  However, it is still a big challenge to correctly form the motor programme in the brain to move the limbs effectively and sequence them in a correct manner.  The timing of the sequence begins at the feet/legs and works its way up.

The importance of SSCs in this section is probably low due to the slower movement of these distal segments.  This must be examined, though, to assertain if there is a role that should be amplified through a modified technique.

Legs

To generate their contributing rotation, the racket leg moves forwards towards the net and the non-racket leg moves back away from the net.  This opposite movement produces the rotation.  The legs should not come close together otherwise the movement is less effective.

For the ground smash that is all that is really needed for the legs. However, for the jump smash a two legged jump should be inserted before the rotation to gain the height.  [to be continued]

As has already been mentioned the movements of the legs can be compromised by time constraints placed on reaching the shuttle.  Momentum carried through into the preparation phase can reduce the effectiveness of the shot (e.g. having to rapidly move backwards).  Also, variations can be made if there is a desire to utilise the shot to begin a change in court position.  For example, by anchoring the non-racket foot the player will actually move towards the net during the shot.

Core to shoulders

The most invariant part of the forehand smash is the rotations generated in this area.  They should be sequenced in turn after the legs.  When reaching the shoulders the non-racket arm can be swung round to asist the racket arm in its rotation.