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 2

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

Male	Normal weight (BMI 5th to 85th)		value	Overweight (BMI over 85th)		value	value
	NW	CONW		OW	COOW
	662 (72.3%)	61 (7.0%)	NW versus CONW	21 (2.2%)	165 (18.5%)	OW versus COOW	Among groups
Age (years)	15.5 ± 0.1	15.3 ± 0.3	0.464	16.3 ± 0.4	15.5 ± 0.1	0.044	0.107
Height (cm)	171.6 ± 0.3	169.1 ± 1.4	0.099	176.9 ± 1.2	172.1 ± 0.6	<0.001	<0.0001
Weight (kg)	59.9 ± 0.4	68 ± 1.2	<0.0001	79.5 ± 1.2	81.8 ± 1	0.157	<0.0001
BMI (kg/m^2)	20.3 ± 0.1	23.7 ± 0.1	<0.0001	25.4 ± 0.1	27.5 ± 0.2	<0.0001	<0.0001
WC (cm)	70.1 ± 0.3	82.2 ± 0.6	<0.0001	80.2 ± 1	88.6 ± 0.7	<0.0001	<0.0001
WHR	40.9 ± 0.1	48.7 ± 0.3	<0.0001	45.3 ± 0.4	51.4 ± 0.4	<0.0001	<0.0001
SBP (mmHg)	108 ± 0.5	110.4 ± 1.3	0.075	110.6 ± 2.4	115.8 ± 1.1	0.050	<0.0001
DBP (mmHg)	67.7 ± 0.4	65.7 ± 1.1	0.101	69.6 ± 1.6	70.7 ± 0.9	0.526	<0.002
Glucose (mg/dL)	88.6 ± 0.3	89.1 ± 1.1	0.642	91.2 ± 2.1	90.4 ± 0.6	0.702	<0.034
Insulin (μU/mL)	10.6 (10.3–11)	13.6 (12.3–15.1)	<0.0001	15.1 (12.3–18.5)	17.4 (16.0–18.8)	0.210	<0.0001
HOMA-IR	2.3 (2.3–2.4)	3 (2.7–3.3)	<0.0001	3.4 (2.7–4.3)	3.9 (3.6–4.2)	0.288	<0.0001
TG (mg/dL)	70.4 (67.4–73.5)	76.2 (64.0–90.8)	0.386	73.6 (56.3–96.2)	114 (101.5–127.9)	<0.003	<0.0001
HDL (mg/dL)	51.8 ± 0.4	47 ± 1.1	<0.0001	52.6 ± 2.9	45.7 ± 0.7	<0.022	<0.0001
TG/HDL	1.4 (1.3–1.4)	1.6 (1.3–2.0)	0.101	1.4 (1.0–2.0)	2.5 (2.2–2.9)	<0.003	<0.0001
ALT (U/L)	12.8 (12.3–13.4)	17 (15.3–18.8)	<0.0001	22.8 (15.0–34.8)	24.8 (22.3–27.7)	0.704	<0.0001
AST (U/L)	17.9 (17.5–18.4)	18.6 (17.5–19.8)	0.272	20.1 (16.6–24.5)	21 (19.9–22.1)	0.698	<0.0001
WBC (10^9/L)	6 (5.9–6.1)	6.4 (6.1–6.8)	<0.021	6.5 (6.1–6.9)	6.8 (6.5–7.0)	0.257	<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.