core stability the ability to control the movement and position of the muscles of the central 'core' of the body which are responsible for posture and limb movement. These include the muscle groups of the lower back and abdomen. Good core stability will allow the sportsman/woman to maximize their sporting performance and minimize injury risk. A well-conditioned core will control and increase the power of muscle movement, resulting in more efficient and coordinated limb movement and limiting potential injury by excessive or abnormal loads. Core stability is improved through a regular and repeated exercise programme, which does not require any equipment.