Table 2.

sEMG activity at 50% and 80% 1-RM (mean and SD).

		NIS	CIS	TIS
	50%	0.206 ± 0.106	0.228 ± 0.110	0.187 ± 0.097
SP	80%	0.326 ± 0.126	0.350 ± 0.130	0.394 ± 0.177
	50%	0.286 ± 0.178	0.382 ± 204	0.298 ± 0.171
CP	80%	0.493 ± 0.240	0.584 ± 0.263	0.646 ± 0.332
	50%	0.134 ± 100	0.169 ± 0.123	0.196 ± 0.163*
LT	80%	0.294 ± 0.208	0.327 ± 0.217	0.364 ± 0.215**
	50%	0.277 ± 0.189	0.303 ± 0.194	0.288 ± 0.179
AD
	80%	0.477 ± 0.309	0.500 ± 0.200	0.500 ± 0315

SP: sternocostal head of pectoralis major, CP: clavicular head of pectoralis major, LT: long head of triceps, AD: anterior deltoid, NIS: non-instructed set, CIS: chest instructed set, TIS: triceps instructed set.

(* = p<0.05 NIS vs TIS

** =p<0.01 NIS vs TIS)