Table 3. Average accelerometer and blood cell counts of the full sample of U.S. adults ≥ 20 years (NHANES 2003–2006).
| Full Sample (n = 4857) | |||
|---|---|---|---|
| Mean | 95% CL | ||
| Accelerometer variables | |||
| Wear time (minutes/day) | 880.5 | 875.6 | 885.4 |
| Average Intensity (cpm) | 341.8 | 334.3 | 349.3 |
| MVPA | |||
| Quartile 1 (≤ 7.0 minutes/day) | 3.6 | 3.4 | 3.7 |
| Quartile 2 (7.1 to 17.5 minutes/day) | 12.0 | 11.7 | 12.2 |
| Quartile 3 (17.6 to 34.3 minutes/day) | 25.3 | 24.9 | 25.7 |
| Quartile 4 (≥34.4 minutes/day) | 56.9 | 55.3 | 58.5 |
| Sedentary time | |||
| Quartile 1 (≤ 389 minutes/day) | 318.5 | 314.8 | 322.3 |
| Quartile 2 (390 to 472 minutes/day) | 432.9 | 431.4 | 434.3 |
| Quartile 3 (473 to 553 minutes/day) | 511.1 | 509.3 | 512.9 |
| Quartile 4 (≥554 minutes/day) | 623.1 | 617.1 | 629.2 |
| Blood Cell Types | |||
| White blood cell count (1000 cells/μL) | 7.3 | 7.2 | 7.4 |
| Red blood cell count (million cells/μL) | 4.8 | 4.8 | 4.8 |
| Platelet count (1000 cells/μL) | 273.4 | 270.9 | 276.0 |
MVPA = moderate-vigorous physical activity. MVPA using ≥2020 accelerometer count threshold. cpm = counts per minute.