Table 1. Participant characteristics providing at least one valid day of accelerometer data.
| Non-pregnant women | Pregnant women | Non-pregnant women | Men | |
| (SWE) | (SWE) | (UK) | (UK) | |
| N | 65 | 30 | 46 | 37 |
| Body mass (kg) | 77.3±19.2 | 76.9±14.8 | 63.2±9.7 | 77.5±10.8*** |
| Height (m) | 1.67±0.07 | 1.67±0.06 | 1.64±0.07 | 1.77±0.07*** |
| Age (yrs) | 28±4 | 30±3** | 41±12 | 43±14 |
| Arm length (cm) | 57±4 | 59±4** | - | - |
| BMI (kg·m−2) | 27.8±6.6 | 27.7±5.3 | 23.4±3.3 | 24.7±3.3 |
| PAEE (MJ/d) | 3.55±1.22 | 3.75±0.91 | - | - |
| TEE (MJ/d) | 11.17±1.63 | 11.17±1.24 | - | - |
| REE (MJ/d) | 6.50±0.98 | 6.30±0.53 | - | - |
| PAL | 1.73±0.23 | 1.78±0.16 | - | - |
| Acc2 (g) wrist | 0.122±0.019 | 0.123±0.023 | 0.123±0.024 | 0.120±0.029 |
| Acc2 (g) hip | - | - | 0.065±0.019 | 0.065±0.021 |
| EWT wrist (%)† | 99.4 (98.2–99.8) | 99.2 (98.1–99.7) | 98.5 (88.4–99.4) | 99.1 (97.9–100.0) |
| EWT hip (%)† | 64.9 (60.4–67.6) | 64.6 (61.0–67.3) |
[Values are mean ± standard deviation, or †median (Inter-Quartile Range); SWE, Sweden; UK, United Kingdom; t-test to test for differences between pregnant (28–32 weeks of gestation) and non-pregnant women (SWE) or between men and women (UK), where *p<0.05, **p<0.01; PAEE: physical activity-related energy expenditure; TEE: total energy expenditure; REE: resting energy expenditure; PAL: physical activity level calculated as TEE/REE; Acc2: average acceleration (g) where non-wear time was imputed by all wear-time data at similar time of the day for that participant; EWT: estimated wearing time].