Table 1.

Results of ground reaction force variables according to the walking conditions during gait

Section	Walking conditions (W)	Heel height (H)			Source	F	P-value
		Barefoot	6 cm with heel	Total average
1st peak vertical force (N/BW)	Normal	1.16±0.06	1.20±0.09	1.18±0.07	H	11.205	0.004**
	Carrier of infant	1.30±0.14	1.44±0.12	1.37±0.15	W	18.657	0.001***
	Total average	1.12±0.13	1.32±0.16	1.27±0.16	H×W	3.420	0.083
2nd peak vertical force (N/BW)	Normal	1.17±0.12	1.20±0.07	1.18±0.10	H	4.283	0.055
	Carrier of infant	1.27±0.06	1.39±0.17	1.34±0.13	W	12.596	0.003**
	Total average	1.22±0.11	1.30±0.16	1.26±0.14	H×W	1.097	0.311
Medial-lateral center of pressure (cm)	Normal	3.07±1.39	2.28±0.49	2.68±1.09	H	8.093	0.012*
	Carrier of infant	2.28±0.49	1.71±0.45	2.00±0.54	W	5.116	0.038*
	Total average	2.68±1.09	2.00±1.93	2.34±0.91	H×W	0.105	0.657
Anterior-posterior center of pressure (cm)	Normal	19.83±1.23	18.42±2.31	19.12±1.93	H	1.415	0.252
	Carrier of infant	21.50±3.21	20.96±3.58	21.23±3.31	W	4.427	0.052
	Total average	20.66±2.51	19.69±3.20	20.18±2.88	H×W	0.287	0.599

Values are presented as mean±standard deviation.

H, main effect of the heel height; W, main effect of the walking condition; H×W, interaction.

^*P<0.05.

^**P<0.01.

^***P<0.001.