Development of max single-arm strength from an overhead position.

The main structures in this movement should start from a maximally stretched position.

The contra-laterality of the supporting leg in relation to the executing arm reinforces the biomechanical/fascial congruency of the structures of the so-called posterior chain involved in locomotion.

The trajectory of the movement should follow a slight spinal rotation, the elbow travels downward into the hip.

It is especially important to move the scapula from max elevation/upper rotation/protraction to depression/lower rotation/retraction.