Table 1.
Demographic, anthropometric, blood measurements, and hemodynamics by physical activity level
| Variable | Low tertile (n = 183) | Middle tertile (n = 182) | High tertile (n = 183) |
|---|---|---|---|
| PA (cpm) a | 127 (35) | 216 (25) | 377 (106) |
| Age (y) a | 19 (3.1) | 18 (3.2) | 17 (3.7) |
| Sex (male) b | 28% | 32% | 50% |
| Race (persons of color) | 62% | 62% | 62% |
| Group b | |||
| Lean | 26% | 30% | 54% |
| Obese | 36% | 42% | 26% |
| T2DM | 38% | 28% | 20% |
| Height (cm) | 167 (10) | 167 (11) | 166 (12) |
| Weight (kg) b | 96 (33) | 91 (29) | 76 (27) |
| BMI (kg/m2) b | 34 (11) | 32 (9.3) | 27 (8.5) |
| Blood measurements | |||
| Cholesterol, total (mg/dL) | 175 (37) | 173 (37) | 168 (36) |
| Low-density lipoprotein cholesterol (mg/dL) d | 107 (34) | 102 (30) | 98 (31) |
| High-density lipoprotein cholesterol (mg/dL) a | 47 (12) | 50 (12) | 53 (14) |
| Triglycerides (mg/dL) b | 111 (72) | 102 (73) | 87 (66) |
| Glucose, fasting (mg/dL) | 119 (69) | 109 (52) | 105 (46) |
| Insulin, fasting (μU/mL) b | 20 (17) | 18 (12) | 15 (14) |
| Hemoglobin A1c (%) c | 6.6 (2.6) | 6.1 (1.9) | 5.9 (1.7) |
| C-reactive protein (mg/L) b | 4.7 (5.4) | 4.3 (5.9) | 2.5 (4.3) |
| Hemodynamics | |||
| Blood pressure, systolic (mm Hg) b | 116 (12) | 117 (13) | 112 (12) |
| Blood pressure, diastolic (mm Hg) b | 67 (13) | 65 (12) | 61 (12) |
| Mean arterial pressure (mm Hg) b | 84 (10) | 83 (9.4) | 81 (9.0) |
| Heart rate (beats/min) | 68 (10) | 65 (8.0) | 67 (12) |
| AI (%) c | 6.2 (12) | 2.6 (11) | 0.7 (11) |
| BrachD (mm/mm Hg) b | 5.7 (1.2) | 5.9 (1.3) | 6.3 (1.4) |
| PWV (m/s) b | 6.4 (1.5) | 6.2 (1.2) | 5.6 (0.9) |
All values presented as mean (standard deviation) except sex, race, and group proportions.
P ≤ .05 for differences by PA tertile determined by analysis of variance on normalized variables and χ2 for categorical variables, and indicated by:
a
Low ≠ Middle ≠ High.
b
Low and Middle ≠ High.
c
Low ≠ Middle and High.
d
Low ≠ High.