EFFECTS OF LOWER EXTREMITY AND TRUNK KINETIC CHAIN RECRUITMENT ON SERRATUS ANTERIOR MUSCLE ACTIVATION DURING FORWARD PUNCH PLUS EXERCISE ON STABLE AND UNSTABLE SURFACES.

BACKGROUND: The stabilizing action of the serratus anterior (SA) muscle is vital in maintaining normal scapulothoracic rhythm. This warrants investigation of exercises to discern which are best to activate the SA muscle. Recruitment of the muscles in the trunk and lower extremity kinetic chain during exercises has demonstrated increased SA activation due to the myofascial connections between various segments of the body. Variation of surfaces …