Table 1. Comparison for EMG ratio among 4 different manual muscle testing position (n=19)

	PRE	SWE	ABD	ADD	F	p
EMG ratio	28.72±6.33	77.46±34.20	20.68±3.52	33.15±14.69	24.96	<0.00

PRE, prone external rotation; SWE, side-lying wiper exercise; ABD, shoulder abducted; ADD, shoulder adducted.