Table 4.

Goodness-of-fit indices for the models tested

Model	$\frac{{\chi }^2}{df}$	RMSEA	NFI	IFI	CFI	GFI
Initial model (model 1)	23.87	0.30	0.93	0.94	0.93	0.96
Model 2 (path from BMI to SE removed)	12.48	0.21	0.93	0.93	0.94	0.96
Model 3 (path from PA to BI removed)	8.35	0.16	0.95	0.95	0.95	0.96
Accepted reference value	<5.0	≤0.10	≥0.95	≥0.95	≥0.95	≥0.95

Abbreviations: BI, body image; BMI, body mass index; CFI, comparative fit index; GFI, goodness-of-fit index; IFI, incremental fit index; NFI, normal fit index; PA, physical activity; RMSEA, root mean square error of approximation; SE, self-esteem.