Table 2.
Physical activity outcomes among participants with valid wear based on Step Count or Heart Rate criterion.
| Physical Activity Variables | Step Count Wear Criterion | Heart Rate Wear Criterion | ||||
|---|---|---|---|---|---|---|
| N | M (SD) | Range | N | M (SD) | Range | |
| Valid Days of Data in First 100 Days | 583 | 75.7 (28.0) | 0 to 100 | 583 | 62.7 (31.3) | 0 to 100 |
| Steps | ||||||
| Mean Daily Steps in First 100 Days | 571 | 8743.4 (3869.3) | 1671.5 to 27,905.2 | 563 | 9000.3 (4006.7) | 670.1 to 23,284.9 |
| Mean Daily Steps in Week 1 | 506 | 9057.6 (4163.8) | 1721.4 to 29,103.0 | 413 | 9525.3 (4378.2) | 683.5 to 29,103.0 |
| Total Steps in Week 1 | 506 | 63,403.5 (29,146.8) | 12,049.8 to 20,3721.0 | 413 | 66,677.4 (30,647.5) | 4784.5 to 20,3721.0 |
| Mean Daily Steps in Week 13 | 431 | 9040.4 (4271.7) | 1677.0 to 24,030.9 | 373 | 9448.1 (4456.8) | 705.7 to 24,030.9 |
| Total Steps in Week 13 | 431 | 63,283.1 (29,901.7) | 11,739.0 to 16,8216.0 | 373 | 66,136.9 (31,197.4) | 4940.0 to 168,216.0 |
| Change in Mean Daily Steps from Week 1 to 13 | 386 | −162.4 (3026.6) | −11961.7 to 12856.1 | 282 | −249.4 (2868.7) | −11,961.7 to 12,856.1 |
| Active Minutes | ||||||
| Mean Daily Active Minutes in First 100 Days | NA | NA | NA | 563 | 43.6 (40.9) | 0 to 299.3 |
| Mean Daily Active Minutes in Week 1 | NA | NA | NA | 413 | 47.0 (43.8) | 0 to 299.7 |
| Total Active Minutes in Week 1 | NA | NA | NA | 413 | 328.9 (306.9) | 0 to 2098.0 |
| Mean Daily Active Minutes in Week 13 | NA | NA | NA | 373 | 54.8 (55.5) | 0 to 396.0 |
| Total Active Minutes in Week 13 | NA | NA | NA | 373 | 383.4 (388.2) | 0 to 2772.0 |
| Change in Mean Daily Active Minutes from Week 1 to 13 | NA | NA | NA | 282 | 6.4 (44.4) | −160.1 to 271.4 |
Note: NA = Not Available due to heart rate data requirement for deriving active minutes.