Table 1.
Descriptive statistics of accelerometer-measured activity and ecological momentary assessment (EMA)-reported activity during matched 2-h time windows stratified by demographic factors and weekends versus weekdays (Level 1 N=2158, Level 2 N=192).
| Characteristic | Accelerometer-measured MVPAa (minutes), mean (SD) | EMA-reported sports or exercise (yes), n (%) |
Accelerometer-measured STb (minutes), mean (SD) | EMA-reported TV, videos, or video games (yes), n (%) |
|
| Sex | |||||
| Boys | 12.7 (18.7) | 370 (36.2) | 66.2 (22.2) | 496 (48.5) | |
| Girls | 8.3 (9.1) | 441 (38.8) | 65.8 (20.4) | 531 (46.7) | |
| Age | |||||
| Above 9.6 years | 8.28 (10.5) | 451 (39.0) | 68.3 (20.1) | 543 (47.0) | |
| Below 9.6 years | 12.9 (18.1) | 360 (35.9) | 63.2 (22.3) | 484 (48.3) | |
| Ethnicity | |||||
| Hispanic | 10.6 (16.7) | 437 (38.8) | 65.7 (21.8) | 494 (43.9) | |
| Non-Hispanic | 10.2 (12.0) | 374 (36.2) | 66.2 (20.7) | 533 (51.7) | |
| BMI-zc | |||||
| Normal | 11.6 (12.6) | 538 (38.7) | 65.5 (21.7) | 691 (49.6) | |
| Overweight or Obese | 8.3 (10.3) | 273 (36.6) | 66.7 (20.44) | 336 (43.9) | |
| Weekend vs weekday | |||||
| Weekend | 9.3 (14.6) | 313 (31.7) | 69.0 (21.9) | 542 (54.9) | |
| Weekday | 11.3 (14.7) | 498 (42.6) | 63.5 (20.5) | 485 (41.5) | |
aMVPA: moderate-to-vigorous physical activity.
bST: sedentary time.
cBMI-z: body mass index z-score.