Table 1 Comparison of muscle activity according to carrying method

Muscle	Carrying method	Muscle activity(% RVC)	P value
Right trapezius	Same-sided	333.45±180.07	0.01*
	Cross-body	124.60±43.72
Left trapezius	Same-sided	108.85±25.07	0.89
	Cross-body	109.90±20.78
Right erector spinae	Same-sided	91.35±22.94	0.08
	Cross-body	81.85±21.72
Left erector spinae	Same-sided	124.20±21.92	0.01*
	Cross-body	78.70±28.79

Data are expressed as mean±SD.
* p<0.05.