Waist to hip ratio and trunk to extremity fat (DXA) are better surrogates for IMCL and for visceral fat respectively than for subcutaneous fat in adolescent girls

Table 3 Associations of anthropometric and DXA measures of body composition with MRI and MRS measures in obese and normal-weight subjects

	Obese girls						Normal-weight girls
	IMCL (AU)		VAT (cm ² )		SAT (cm ² )		IMCL (AU)		VAT (cm ² )		SAT (cm ² )
	r	p	r	p	r	p	r	p	r	p	r	p
Subscapular skinfold thickness (mm)	ns	ns	0.77	0.003	0.95	< 0.0001	ns	ns	ns	ns	0.47	0.09
Triceps skinfold (mm)	ns	ns	0.56	0.06	0.63	0.03	ns	ns	ns	ns	0.53	0.05
Waist circumference-umbilicus (cm)	ns	ns	0.79	0.002	0.82	0.001	ns	ns	0.74	0.002	0.85	< 0.0001
Waist circumference-iliac crest (cm)	ns	ns	0.78	0.003	0.89	0.0001	ns	ns	0.81	0.0005	0.86	< 0.0001
Waist to hip ratio	0.78	0.008	0.62	0.04	ns	ns	ns	ns	ns	ns	ns	ns
Waist to height ratio	ns	ns	0.82	0.001	0.73	0.007	ns	ns	0.73	0.003	0.86	< 0.0001
Total fat (kg)	ns	ns	0.56	0.05	0.96	< 0.0001	ns	ns	0.70	0.003	0.65	0.009
Percent body fat (%)	0.57	0.05	0.55	0.05	0.77	0.002	ns	ns	0.70	0.003	0.66	0.007
Trunk fat (kg)	0.56	0.06	0.59	0.03	0.91	< 0.0001	ns	ns	0.77	0.0007	0.74	0.002
Extremity fat (kg)	ns	ns	0.54	0.05	0.93	< 0.0001	ns	ns	ns	ns	0.48	0.07
Percent trunk fat (%)	0.69	0.01	0.70	0.007	0.52	0.07	ns	ns	0.79	0.0004	0.71	0.003
Percent extremity fat (%)	-0.59	0.04	-0.70	0.008	-0.53	0.06	ns	ns	-0.80	0.0004	-0.63	0.01
Trunk to extremity fat ratio	0.59	0.04	0.72	0.006	0.53	0.06	ns	ns	0.79	0.0004	0.72	0.003

ns: not significant; P values <0.10 are reported with corresponding correlation coefficients
IMCL: intramyocellular lipid; VAT: visceral adipose tissue; SAT: subcutaneous adipose tissue

ISSN: 1743-7075