Insulin Resistance of Normal Weight Central Obese Adolescents in Korea Stratified by Waist to Height Ratio: Results from the Korea National Health and Nutrition Examination Surveys 2008–2010

Table 1

Subject characteristics and laboratory data according to four body composition groups in 13–18-year-old female adolescents.

Female	Normal weight (BMI 5th to 85th)		value	Overweight (BMI over 85th)		value	value
	NW	CONW		OW	COOW
	604 (72.7%)	83 (9.6%)	NW versus CONW	20 (2.5%)	125 (15.1%)	OW versus COOW	Among groups
Age (years)	15.4 ± 0.1	15.4 ± 0.2	0.879	15.6 ± 0.4	15.3 ± 0.2	0.579	0.945
Height (cm)	160.5 ± 0.3	158.7 ± 1	0.074	161.9 ± 0.8	160.8 ± 0.5	0.227	0.082
Weight (kg)	50.8 ± 0.2	54.9 ± 1.0	<0.0001	65.1 ± 1.2	68.6 ± 1	<0.022	<0.0001
BMI (kg/m^2)	19.7 ± 0.1	21.7 ± 0.2	<0.0001	24.8 ± 0.3	26.5 ± 0.3	<0.0001	<0.0001
WC (cm)	65.8 ± 0.2	75.1 ± 0.6	<0.0001	71.3 ± 0.6	81 ± 0.7	<0.0001	<0.0001
WHR	41 ± 0.1	47.3 ± 0.2	<0.0001	44.0 ± 3.0	50.4 ± 0.4	<0.0001	<0.0001
SBP (mmHg)	101.8 ± 0.5	102.1 ± 1.4	0.813	102.2 ± 2.8	105.7 ± 1	0.242	<0.006
DBP (mmHg)	65.7 ± 0.4	64.7 ± 1.2	0.374	66.6 ± 2	66.7 ± 1	0.953	0.568
Glucose (mg/dL)	87.5 ± 0.3	88 ± 0.7	0.401	87.5 ± 1.2	89.9 ± 0.8	0.081	<0.028
Insulin (μU/mL)	11.4 (11–11.8)	12.9 (11.9–13.9)	<0.006	14.3 (12.0–17.1)	16 (14.5–17.7)	0.272	<0.0001
HOMA-IR	2.5 (2.4–2.5)	2.8 (2.6–3)	<0.006	3.1 (2.6–3.7)	3.5 (3.2–3.9)	0.201	<0.0001
TG (mg/dL)	71.6 (68.7–74.7)	77.5 (69.5–86.6)	0.186	77.3 (59.2–100.9)	89 (80.0–99.1)	0.344	<0.002
HDL (mg/dL)	56.4 ± 0.5	54.6 ± 1.5	0.284	50.8 ± 2.1	49.4 ± 1.2	0.563	<0.0001
TG/HDL	1.3 (1.2–1.4)	1.5 (1.3–1.7)	0.121	1.5 (1.2–2.1)	1.8 (1.6–2.1)	0.285	<0.0001
ALT (U/L)	10 (9.7–10.3)	11.5 (10.8–12.3)	<0.001	11.8 (9.9–14.1)	12.9 (11.6–14.3)	0.392	<0.0001
AST (U/L)	16 (15.7–16.3)	15.6 (14.8–16.5)	0.458	15.6 (13.9–17.5)	15.8 (15.3–16.4)	0.839	0.861
WBC (10^9/L)	5.9 (5.8–6)	6.1 (5.7–6.6)	0.260	6.3 (5.7–7.0)	6.7 (6.4–7.0)	0.351	<0.0001

Data are presented as the means ± standard error (SE), geometric mean (95% CI), or % (SE).
Insulin, HOMA-IR, TG, TG/HDL, ALT, AST, and WBC count were tested after logarithmic transformation.
NW, no central obesity normal weight; CONW, central obesity normal weight; OW, no central obesity overweight; COOW, central obesity overweight; WC, waist circumstance; WHR, waist to height ratio; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; HOMA-IR, homeostasis model assessment-insulin resistance; TG, triglyceride; HDL, high-density lipoprotein; ALT, alanine aminotransferase; AST, aspartate aminotransferase; WBC, white blood cell.