Table 2.
Physical activity characteristics of the participants in the comparative analysis and BMI analysis subset.
| Characteristics | Comparative analysis | BMI analysis subset | |
| Season of data collectiona, n (%) | |||
|
|
Spring | 340 (22.7) | 161 (27.5) |
|
|
Summer | 445 (29.7) | 149 (25.4) |
|
|
Fall | 323 (21.6) | 141 (24.1) |
|
|
Winter | 390 (26.0) | 135 (23.0) |
| Fitbit | |||
|
|
Wearing on wristb, n (%) | 995 (71.5) | 420 (71.7) |
|
|
Wearing on torsob, n (%) | 397 (28.5) | 166 (28.3) |
|
|
Wear time (h/d)a, median (IQR) | 17.1 (16.0-18.5) | 17.1 (15.9-18.5) |
|
|
Overall activity (steps/d)a, median (IQR) | 8622 (6191-11,061) | 8778 (6385-11,115) |
|
|
Active time (h/wk)a, median (IQR) | 22.9 (18.0-28.0) | 23.1 (18.5-28.1) |
|
|
Sedentary (h/wk)a, median (IQR) | 87.2 (80.5-94.2) | 87.3 (80.7-94.9) |
|
|
Walking (h/wk)a, median (IQR) | 20.2 (15.9-25.0) | 20.8 (16.6-25.5) |
|
|
Moderate activity (min/wk)a, median (IQR) | 75 (26-163) | 75 (28-166) |
|
|
Vigorous activity (min/wk)a, median (IQR) | 0 (0-11) | 1 (0-12) |
| IPAQa,c | |||
|
|
Overall activity (metabolic equivalent of tasks-h/wk), median (IQR) | 35.5 (18.1-62.2) | 34.9 (19.3-60.0) |
|
|
Active time (h/wk), median (IQR) | 8.0 (4.3-14.0) | 8.2 (4.5-13.2) |
|
|
Sedentary (h/wk), median (IQR) | 42.0 (21.0-56.0) | 42.0 (26.8-56.0) |
|
|
Walking (h/wk), median (IQR) | 3.5 (2.0-7.0) | 3.5 (1.7-7.0) |
|
|
Moderate activity (min/wk), median (IQR) | 90 (20-200) | 90 (30-200) |
|
|
Vigorous activity (min/wk), median (IQR) | 80 (0-180) | 80 (0-180) |
aCalculated for 1498 comparative analysis participants and 586 BMI analysis participants.
bCalculated for 1345 comparative analysis participants and 586 BMI analysis participants.
cIPAQ: International Physical Activity Questionnaire.