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Analysis of basic movements Typeit
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During a press-up, the shoulder joint and elbow joint are the main joints being used - the elbow joint is a joint, whilst the shoulder joint is a joint.
During the downwards phase of a press-up, the elbow joint undergoes as the angle between the in the upper arm and the and ulna in the lower arm is . This is achieved by the muscle working as the agonist to allow the movement. This muscle is undergoing muscle contraction as the muscle lengthens under tension to control the downwards movement.
Also during the downwards phase the shoulder joint undergoes . This is achieved by the muscles contracting eccentrically to control the movement.
During the upwards phase of a press-up, the elbow joint undergoes . The angle between the bone in the upper arm and the bones of the lower arm is this time . This is achieved by the contracting as they shorten to allow the movement. The upwards phase also sees the shoulder joint undergo .