. 2022 Jul 30;2022:8132402. doi: 10.1155/2022/8132402

Table 4.

Comparison of foot morphological change within and between groups.

Item	Group	Paired t-test within the group			Student's t-test between groups
Item	Group	Before	After	Mean difference	T	P value
Instep height(mm)	GS	74.70 ± 5.53	72.96 ± 4.70	−1.11 ± 7.23^∗	0.004	0.997
Instep height(mm)	MS	74.50 ± 3.91	73.39 ± 3.76	−1.11 ± 6.16^∗	0.004	0.997
Ball of the foot length (mm)	GS	42.22 ± 8.04	41.02 ± 6.99	-1.02 ± 10.65^∗	0.704	0.492
Ball of the foot length (mm)	MS	42.88 ± 4.65	41.54 ± 7.44	−1.34 ± 8.77^∗	0.704	0.492
AHI (%)	GS	30.00 ± 0.02	29.00 ± 0.01	−1.00 ± 0.02^∗	3.540	0.003^∗∗
AHI (%)	MS	32.00 ± 0.02	32.00 ± 0.02	0.00 ± 0.03	3.540	0.003^∗∗

GS: hard ground surface; MS: standing mat surface; ^∗∗: P < 0.01; ^∗: P < 0.05.