Table 2. Mean (±SD) duration of non-active phase for non- active phase and non- active phase for all the muscles (BB- biceps brachii; DA- deltoid anterior; PM- pectoralis major and TB- triceps brachii), over the four laps of the 200 m breaststroke maximal effort. 1st lap 2nd lap 3rd Lap 4th Lap Laps Non-Active phasebeg (s) Non-Active phaseend (s) Non-Active phasebeg (s) Non-Active phaseend (s) Non-Active phasebeg (s) Non-Active phaseend (s) Non-Active phasebeg (s) Non-Active phaseend (s) BB .76 (.24) .80 (.24) .81 (.21) .72 (.22) .77 (.20) .81 (.28) .79 (.26) .78 (.17) DA .66 (.16) .71 (.14) .79 (.15) .69 (.17) .70 (.16) .75 (.19) .70 (.24) .68 (.26) PM .60 (.18) .60 (.13) .70 (.24) .68 (.32) .63 (.21) .65 (.17) .72 (.20) .68 (.16) TB .63 (.27) .62 (.18) .55 (.17) .67 (.26) .59 (.17) .64 (.29) .61 (.18) .53 (.22)