Table 1 Participant characteristics
Variables | Total (N = 2527) |
|---|---|
Age (years) | 13 (10-16) |
Gender (%) | Â |
   Male | 50.8 |
   Female | 49.2 |
Race (%) | Â |
   Non-Hispanic white | 38.3 |
   Non-Hispanic black | 24.4 |
   Hispanic | 32.7 |
   Other | 4.6 |
Accelerometer-derived variables | Â |
   Total wear time (minutes/day) | 834 (779-894) |
   Sedentary behavior (% of total time) | 50.8 (42.1-58.9) |
   Bouts of sedentary behavior (% of total time) | 24.5 (14.4-36.1) |
   Breaks in bouts of sedentary behavior (% of bouts) | 13.5 (12.1-15.3) |
   MVPA (% of total time) | 4.1 (1.6-8.5) |
   Low intensity activity (% of total time) | 43.8 (38.0-49.6) |
Questionnaire-derived variables | Â |
   TV (hours/day) | 2.0 (1.0-3.0) |
   Computer (hours/day) | 0.5 (0.0-1.0) |
Cardio-metabolic risk score components | Â |
   Waist circumference (cm) | 72.9 (64.5-82.7) |
   Systolic blood pressure (mmHg, N = 2265) | 107 (100-114) |
   Non-HDL (mmol/l) | 2.7 (2.3-3.2) |
   C - reactive protein (mmol/l) | 0.002 (0.001-0.007) |