Table 1. Physical characteristics and time spent sedentary and in the different physical activity subcomponents.
| Variables | All (n = 135) | Boys (n = 54) | Girls (n = 81) |
| Age (years) | 12±1 | 12±1 | 12±1 |
| Ethnicity (% non-white) | 24 | 24 | 24 |
| Standing height (cm) | 150±11 | 151±12 | 150±9 |
| Body weight (kg) | 41±12 | 40±12 | 41±12 |
| zBMI | −0.3±1.4 | −0.4±1.3 | −0.3±1.4 |
| Cardiorespiratory fitness (mL.kgFFM.min−1) | 52±10 | 56±8* | 50±10 |
| Sedentary behaviour (minutes/day, <1.5 METs) | 452±75 | 440±70 | 461±78 |
| Light physical activity (minutes/day, 1.5–2.9 METs) | 178±43 | 165±34* | 186±47 |
| Moderate physical activity (minutes/day, 3–5.9 METs) | 84±30 | 87±27 | 81±31 |
| Vigorous physical activity (minutes/day, 6–8.9 METs)+ | 14±10 | 17±9* | 12±10 |
| Hard physical activity (minutes/day, ≥9 METs)+ | 8±9 | 11±10* | 6±7 |
| Total wear time (minutes/day) | 736±67 | 721±63 | 747±67 |
| Meeting physical activity guidelines (%) | 90 | 94 | 88 |
Notes:
*
Significant difference between sexes (p<.01).
+
Square-root transformed in main analyses, untransformed data displayed.