Journal of Sports Science and Medicine

Table 1. Mean (±SD) duration of active phase for active phase and active phase four all the muscles (BB- bíceps brachii; DA- deltoid anterior; PM- pectoralis major and TB- triceps brachii), over the four laps of the 200 m breaststroke maximal effort.

	1^st lap		2^nd lap		3^rd Lap		4^th Lap
Laps	Active phase_beg (s)	Active phase_end (s)	Active phase_beg (s)	Active phase_end (s)	Active phase_beg (s)	Active phase_end (s)	Active phase_beg (s)	Active phase_end (s)
BB	.99 (.78)	.98 (.90)	.73 (.26)	.58 (.14)	.68 (.27)	.56 (.20)	.70 (.24)	.63 (.10)
DA	.78 (.30)	.64 (.17)	.63 (.14)	.72 (.14)	.87 (.67)	.58 (.25)	.82 (.38)	.93 (.58)
PM	.61 (.18)	.71 (.32)	.64 (.17)	.88 (.48)	.69 (.62)	.55 (.33)	.62 (.35)	.79 (.63)
TB	.71 (.21)	.69 (.25)	.54 (.14)	.58 (.14)	.54 (.22)	.52 (.15)	.84 (.74)	.85 (.76)