TABLE 1.

Baseline characteristics overall and by gender for the n = 4955 participants completing anthropometric measures, blood collection, and 20-MST for whom highest household education level was also available.

	Overall		Males		Females
Demographic Characteristics	n	Mean ± SE or %	n	Mean ± SE or %	n	Mean ± SE or %
Age (yr)	4955	11.3 ± 0.6	2341	11.4 ± 0.6	2614	11.3 ± 0.6
Pubertal status
Stage 1	521	10.5	369	15.8	152	5.8
Stage 2 or 3	3251	65.6	1821	77.8	1430	54.7
Stage 4 or 5	1183	23.9	151	6.5	1032	39.5
Race/ethnicity
White (non-Hispanic)	1024	20.7	527	22.5	497	19.0
Black	1029	20.8	457	19.5	572	21.9
Hispanic	2902	58.6	1357	58.0	1545	59.1
Highest household education level
Low	1432	28.9	665	28.4	767	29.3
Middle	2628	53.0	1237	52.8	1391	53.2
High	895	18.1	439	18.8	456	17.4
Fitness and obesity measures
BMI (kg·m–2)	4955	22.3 ± 5.4	2341	22.4 ± 5.4	2614	22.3 ± 5.3
BMI category
<85th percentile	2505	50.6	1127	48.1	1378	52.7
85th–94th percentile	964	19.5	432	18.5	532	20.4
≥95th percentile	1486	30.0	782	33.4	704	26.9
Fitness (no. of laps)	4955	21.1 ± 12.1	2341	23.8 ± 14.0	2614	18.7 ± 9.5
Cardiometabolic risk factors
Waist circumference (cm)	4955	75.9 ± 14.9	2341	76.0 ± 15.9	2614	75.7 ± 13.9
Total cholesterol (mg·dL–1)	4955	156.9 ± 27.1	2341	158.5 ± 27.9	2614	155.5 ± 26.4
HDL-cholesterol (mg·dL–1)	4955	52.5 ± 12.2	2341	52.9 ± 12.5	2614	52.1 ± 12.0
LDL-cholesterol (mg·dL–1)	4955	86.7 ± 23.1	2341	88.1 ± 23.4	2614	85.4 ± 22.7
Triglycerides (mg·dL–1)	4955	88.8 ± 51.0	2341	87.7 ± 52.0	2614	89.9 ± 50.0
SBP (mm Hg)	4955	107.6 ± 10.1	2341	108.4 ± 10.2	2614	106.9 ± 9.9
DBP (mm Hg)	4955	63.7 ± 8.7	2341	63.5 ± 8.8	2614	63.8 ± 8.6
Glucose (mg·dL–1)	4955	93.5 ± 6.6	2341	94.5 ± 6.6	2614	92.6 ± 6.6
Insulin (μU·mL–1)	4955	13.2 ± 11.1	2341	12.0 ± 11.6	2614	14.2 ± 10.6

DBP, diastolic blood pressure; SBP, systolic blood pressure.