Table 3.

Correlation matrix (Spearman’s rho) between BIA, DXA, WC, and WHtR for fat-free mass, fat mass, and visceral adipose tissue (normal weight BMI < 25 kg/m², overweight and obese ≥ 25 kg/m²).

	Normal Weight Group (n = 10)	Overweight and Obese Group (n = 20)	Whole Group (n = 30)
Fat free mass
WHtR vs. BIA	0.418	0.470 *	0.500 **
WHtR vs. DXA	0.365	−0.095	0.073
WC vs. BIA	0.620	0.823 ***	0.972 ***
WC vs. DXA	0.277	0.147	0.222
BIA vs. DXA	−0.292	0.425	0.323
Fat mass
WHtR vs. BIA	0.552	0.716 ***	0.815 ***
WHtR vs. DXA	0.588	0.747 ***	0.828 ***
WC vs. BIA	0.444	0.815 ***	0.888 ***
WC vs. DXA	0.571	0.836 ***	0.901 ***
BIA vs. DXA	0.588	0.989 ***	0.981 ***
Visceral adipose tissue
WHtR vs. BIA	0.409	0.870 ***	0.822 ***
WHtR vs. DXA	0.091	0.653 ***	0.743 ***
WC vs. BIA	0.573	0.987 ***	0.944 ***
WC vs. DXA	0.103	0.807 ***	0.880 ***
BIA vs. DXA	0.323	0.826 ***	0.869 ***

Data presented as rho values. * p < 0.05; ** p < 0.01; *** p < 0.001. WHtR: waist to height ratio; WC: anatomical waist circumference.