The effect of the combination of whole body vibration and shoe with an unstable surface in chronic ankle instability treatment: a randomized clinical trial

Table 3 Separate repeated measure ANOVA tests for variables (anterior and posterolateral directions of modified star excursion balance test, and hop-test) with significant interaction to compare time effect in each group

Variable	Group	Pre-intervention	Post-intervention	Follow-up	F	P
Modified star excursion balance test (%)
Anterior	WBV-S	59.95 (7.86)	70.61 (11.73)	71.35 (13.12)	F _{2, 22} = 8.45	0.002 † ‡
	WBV	62.99 (10.02)	73.64 (11.42)	69.91 (10.53)	F _{2, 22} = 8.32	0.002 † ‡
	CON	60.04 (8.07)	59.82 (5.30)	60.91 (3.59)	F _{1.22, 11.02} = 0.20	0.71
Posterolateral	WBV-S	69.49 (19.12)	79.51 (23.89)	81.40 (23.26)	F _{2, 22} = 4.56	0.02 † ‡
	WBV	69.54 (17.23)	86.29 (18.37)	85.77 (16.43)	F _{1.42, 15.63} = 15.45	< 0.001 † ‡
	CON	73.89 (14.87)	75.81 (20.69)	75.32 (17.70)	F _{2., 18} = 0.10	0.9
Hop-test (cm)
	WBV-S	47.49 (19.76)	69.44 (37.62)	74.75 (40.30)	F _{1.25, 13.84} = 10.38	0.004 † ‡
	WBV	48.62 (20.40)	53.19 (19.85)	57.70 (23.39)	F _{2, 22} = 1.52	0.24
	CON	53.49 (33.52)	56.98 (33.52)	60.82 (33.54)	F _{2, 18} = 1.79	0.19

Note: Values are means and (Standard Deviation). Significant post hoc difference between: † pre- and post-intervention; ‡ pre-intervention and follow-up
Abbreviations: WBV Whole body vibration group, WBV-S Whole body vibration with shoe with an unstable surface group, CON Control group

ISSN: 2052-1847