Table 2.
Participant characteristics for each study.
| Characteristic | SMART Work and Life | Wrist Equivalency | STAND UP | Overall |
|---|---|---|---|---|
| N | 640 | 46 | 27 | 713 |
| Age (years) | 44.8 (10.3) | 24.6 (4.5) | 73.3 (4.2) | 44.6 (9.7) |
| Sex, n female | 463 (72.3%) | 29 (63.0%) | 14 (51.9%) | 506 (71.0%) |
| Ethnicity, n White British | 455 (71.1%) | 39 (84.8%) | 14 (51.9%) | 508 (71.2%) |
| BMI (kg/m2) | 26.4 (6.1) | 23.2 (3.8) | 26.4 (3.9) | 26.2 (5.9) |
| Sitting time (min/day) | 603.6 (94.8) | 589.3 (130.0) | 557.2 (116.0) | 601.0 (98.5) |
| Standing time (min/day) | 233.6 (75.6) | 216.1 (76.1) | 300.0 (85.4) | 235.1 (77.1) |
| Stepping time (min/day) | 110.9 (34.0) | 117.8 (52.9) | 114.9 (34.7) | 111.5 (35.5) |
| Average acceleration (mg) | 27.6 (7.9) | 31.1 (9.6) | 25.1 (4.9) | 27.7 (8.0) |
| Intensity gradient | −2.54 (0.23) | −2.38 (0.33) | −2.75 (0.20) | −2.55 (0.24) |
BMI, Body mass index; values are expressed as mean ± SD or n (%), unless stated otherwise. The intensity gradient describes the negative curvilinear relationship between physical activity intensity and the duration of time spent in that intensity during a 24 h day. A more negative gradient (lower value) represents less time spent in higher intensity activities.