Negative association between trunk fat, insulin resistance and skeleton in obese women

Table 2 Biochemical and hormonal characteristics of the study population according to different body mass index

	BMI < 30 kg/m2	BMI 30-35 kg/m2	BMI 35-40 kg/m2	BMI > 40 kg/m2
	(n = 80)	(n = 100)	(n = 80)	(n = 80)
BMI	27 ± 1.2	32.5 ± 1b	37 ± 1.5b	44 ± 2b
Mean age (yr)	46.5 ± 15	45 ± 14	46 ± 13	43 ± 14
Total-cholesterol (mg/dL)	199 ± 54	198 ± 41	204 ± 40	190 ± 32
HDL-cholesterol (mg/dL)	52 ± 13	50 ± 11	50 ± 10	46 ± 10
Triglycerides (mg/dL)	114 ± 79	117 ± 61	130 ± 72	122 ± 68
Fibrinogen (mg/dL)	346 ± 102	341 ± 63	368 ± 85	421 ± 86b
C-reactive protein (ng/mL)	2 ± 0.9	2.8 ± 0.9	5.0 ± 1.4b	5.5 ± 2.1b
HOMA-IR	2.8 ± 0.9	3.1 ± 0.8	5.0 ± 2.6b	6.4 ± 2.2b
PTH (pg/mL)	40 ± 15	42 ± 20	46 ± 23	48 ± 19
Vitamin D	26 ± 9	20 ± 10b	16 ± 8b	15 ± 10b

^bP < 0.01 vs BMI < 30 kg/m². BMI: Body mass index; HOMA-IR: Homeostasis model assessment of insulin resistance; Vitamin D: 25-hydroxyvitamin D; PTH: Parathyroid hormone; HDL: High-density lipoprotein.