Analysis of patellofemoral arthrokinematic motion quality in open and closed kinetic chains using vibroarthrography

Table 3 Main effects and interactions of ANOVA for analyzed VAG parameters after Box-Cox transformation

	Effect of kinetic chain		Effect of group		Kinetic chain x group interaction
	F(1.98)	P	F(1.98)	P	F(1.98)	P
VMS [V]	328.94	< 0.001	148.36	< 0.001	2.08	0.152
R4 [V]	392.56	< 0.001	144.29	< 0.001	0.10	0.756
P1 [V²/Hz]	264.76	< 0.001	118.39	< 0.001	4.71	0.032
P2 [V²/Hz]	429.41	< 0.001	102.48	< 0.001	2.60	0.110

VMS, variance of the mean squares calculated in 5 ms windows; R4, the difference between the mean of four most prominent peaks and the mean of four most prominent troughs of VAG signal; P1, P2, power spectral density bands: 50–250 Hz and 250–450 Hz, respectively

ISSN: 1471-2474