Table 4.

Significant results from the four (Group) x four (Phase) x two (Visual condition) ANOVAs in the principal accelerations (PA).

	ANOVA
Variables	Main Effect or Interaction	F	df	p	η2p	Power	Post-hocs
${\text{PA-rSDT}}_1^{\text{b}}$	Group x Phase	3.712	9, 219	<0.001	0.132	0.99	DV: C-NG > A-NG
	Phase	70.261	3, 73	<0.001	0.490	1.00	BV, DV < AV2 < AV1
	Visual condition	103.644	1, 75	<0.001	0.587	1.00	EO < EC
${\text{PA-rSDT}}_2^{\text{a}}$	Phase	20.664	3, 73	<0.001	0.221	1.00	BV, AV1, AV2 > DV
	Visual condition	5.772	1, 75	0.019	0.073	0.66	EO > EC
${\text{PA-rSDT}}_3^{\text{a}}$	Group	8.090	3, 73	<0.001	0.250	0.99	C-NG > C-G, A-NG, A-G
	Phase	42.095	3, 73	<0.001	0.366	1.00	DV > BV, AV1, AV2; BV > AV2
${\text{PA-rSDT}}_4^{\text{a}}$	Group	3.846	3, 73	0.013	0.136	0.80	-
	Phase	36.821	3, 73	<0.001	0.335	1.00	BV > DV, AV2 > AV1
	Visual condition	23.368	1, 75	<0.001	0.242	1.00	EO > EC
	Group x Phase	2.510	9,219	0.009	0.094	0.929	-
	Phase	13.631	3, 73	<0.001	0.157	1.00	BV > DV, AV1, AV2
PA-rSDT5	Visual condition	27.816	1, 75	<0.001	0.276	1.00	EO > EC
PA-rSDT6 b	Phase	118.791	3, 73	<0.001	0.619	1.00	AV2 < BV < DV; AV1 < DV

C-NG, children non-gymnast; C-G, children gymnast; A-NG, adult non-gymnast; A-G, adult gymnast; EO, eyes open; EC, eyes closed; BV, before vibration phase; DV, during vibration phase; AV1, early after vibration phase; AV2, later after vibration phase; PA-rSDT, principal acceleration relative standard deviation.

^aTest of normality failed. Square root values were used to compute ANOVA.

^bTest of normality failed. Values were transformed on ranks to compute ANOVA.