Table 3.

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

	ANOVA
Variables	Main effect or Interaction	F	df	p	η2p	Power	Post-hocs
${\text{PV-rSDT}}_1^{\text{a}}$	Phase	118.798	3, 73	<0.001	0.619	1.00	BV, DV < AV2 < AV1
	Visual condition	349.413	1, 75	<0.001	0.827	1.00	EO < EC
PV-rSDT2	Phase	51.210	3, 73	<0.001	0.412	1.00	BV, DV, AV2 > AV1
	Visual condition	40.059	1, 75	<0.001	0.834	1.00	EO > EC
${\text{PV-rSDT}}_3^{\text{a}}$	Group	4.088	3, 73	0.010	0.144	0.83	C-NG > A-G
	Phase	37.573	3, 73	<0.001	0.340	1.00	AV2 < BV, AV1 < DV
	Visual condition	55.816	1, 75	<0.001	0.433	1.00	EO > EC
${\text{PV-rSDT}}_4^{\text{a}}$	Group x Phase	2.770	9, 219	0.004	0.102	0.95	DV: C-NG > C-G, A-NG, A-G AV1: C-G > A-NG, A-G AV2: C-NG > A-G
	Group	5.779	3, 73	0.001	0.192	0.94	C-NG > A-NG, A-G; C-G > A-G
	Phase	92.880	3, 73	<0.001	0.560	1.00	BV > DV, AV2 > AV1
	Visual condition	124.580	1, 75	<0.001	0.631	1.00	EO > EC
${\text{PV-rSDT}}_5^{\text{a}}$	Phase	129.545	3, 73	<0.001	0.640	1.00	BV > AV2 > DV > AV1
	Visual condition	152.758	1, 75	<0.001	0.677	1.00	EO > EC
${\text{PV-rSDT}}_6^{\text{b}}$	Phase	81.162	3, 73	<0.001	0.526	1.00	AV1 < BV, AV2 < DV
	Visual condition	77.165	1, 75	<0.001	0.514	1.00	EO > EC

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; PV-rSDT, principal velocity 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.