Correspondence: Amritashish Bagchi, Research Scholar, Lakshmibai National Institute of Physical Education, Gwalior (M.P), INDIA, Tell: +917415318615, Email: [email protected] A COMPARATIVE ELECTROMYOGRAPHICAL INVESTIGATION OF TRICEPS BRACHII AND PECTORALIS MAJOR DURING FOUR DIFFERENT FREEHAND EXERCISES

This study aimed to investigate the effects of different freehand exercises on the electromyographic (EMG) activity of Triceps Brachii (TB) and Pectoralis Major (PM) muscles. Ten healthy men (21.25 ± 2.09 years) performed 1 repetition of four different freehand exercises. The maximum voluntary contraction (MVC) was recorded with the help of biograph infinity software (EMG). Surface ElectroMyoGraphy (SEMG) was used for measuring muscle electrical activity that occurs during muscle contraction. The four different freehand exercises were vertical dips (VD), wider grip vertical dips (WGVD), back dips (BD) and diamond push-ups (DPU). The results of the study shows that in case of the muscles activation in Triceps Brachii, except diamond push-ups (DPU) all the other exercises reveals significant differences with the vertical dips (VD), suggesting that Vertical dips is more effective inactivating the primary mover (Triceps Brachii) as compare to wider grip vertical dips (WGVD) and back dips (BD). When it comes to Pectoralis Major Muscle activationwider grip vertical dips (WGVD) was foundto be more effective, as all the other exercises reveals significant differences with the wider grip vertical dips (WGVD).