Table 4. CoG sway when players stood on the non-dominant leg with their eyes open and closed.

Standing on the non-dominant leg	With eyes open			With eyes closed
	High-level group	Low-level group	Significant difference	High-level group	Low-level group	Significant difference
Total CoG sway path (cm)	106.3±17.4	112.9±22.0		216.5±39.9	306.9±87.7	*
Sway area (cm2)	111.8±32.1	119.9±47.7		355.1±133.2	683.8±347.3	*
Trace length per unit area (cm/cm2)	1.0±0.3	1.1±0.4		0.7±0.2	0.5±0.2
X-axis sway amplitude (cm)	70.9±14.9	75.8±13.5		140.8±28.3	178.8±35.7	*
Y-axis sway amplitude (cm)	64.9±12.2	69.4±16.5		134.2±31.7	208.3±79.6	*
Mean X-axis center displacement (cm)	−0.5±0.8	−0.9±0.5		−0.5±0.5	−0.5±0.9
Mean Y-axis center displacement (cm)	−1.0±1.2	−1.7±1.7		−1.0±1.1	−1.7±0.8

*: p<0.05