Table 1. Mean and standard deviation of normalized RMS.

Production standard	FCRR		FCRL		ECRR		ECRL
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
PSN	8.8*	1.8	11.0*	2.8	10.4*	2.3	11.4*	3.4
PSH	9.6*	2.2	11.9*	2.5	11.0*	2.5	11.9*	3.4
PSVH	9.9*	2.4	12.4*	2.9	11.9*	3.1	12.7*	3.5

*Production standard time has a significant effect on the mean RMS for all muscles, p<0.05.