Table 1.
Sedentary time, physical activity and cardiorespiratory fitness in English schoolchildren (age 10–16 years).
| Boys (n = 370) |
Girls (n = 308) |
Mean difference (95%CI) |
t-Test or χ2, p-value | |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | |||
| Age (years) | 13.5 (0.8) | 13.4 (0.8) | 0.1 (− 0.6–0.4) | t = 0.78, p = 0.695 |
| Area-level deprivation (EID score) | 12.9 (4.8) | 13.0 (4.5) | 0.8 (− 1.4–2.0) | t = 0.61, p = 0.879 |
| Ethnicity (% white British) | 95.2% (n = 356) | 92.9% (n = 286) | – | χ2 = 1.81, p = 0.118 |
| Weekday sedentary time (min) | 767 (290) | 739 (261) | 28 (− 14–69) | t = 1.30, p = 0.191 |
| Weekend sedentary time (min) | 258 (212) | 243 (170) | 14 (− 14–15) | t = 0.94, p = 0.291 |
| Daily sedentary time (min) | 627 (231) | 612 (191) | 15 (− 18–48) | t = 0.89, p = 0.373 |
| 7-Day physical activity (PAQ-A) | 2.92 (0.72) | 2.55 (0.58) | 0.36 (0.26–0.46) | t = 1.72, p = 0.017 |
| Low physical activitya | 47% (n = 170) | 54% (n = 163) | – | χ2 = 1.85, p = 0.112 |
| Cardiorespiratory fitness (ml kg− 1 min− 1) | 43.4 (5.1) | 38.2 (5.4) | 5.2 (4.4–6.0) | t = 12.3, p < 0.001 |
| Low cardiorespiratory fitnessb | 40.9% (n = 126) | 42.9% (n = 129) | – | χ2 = 1.85, p = 0.112 |
Legend: EID — English Indices of Deprivation; PAQ-A (Physical Activity Questionniare for Older Children: 1–5 score), (Kowalski et al., 1997).
a
Based on cut-offs of Voss et al. (2013).
b
Based on cut-offs of Bell et al. (1986). All data collected in summer term (May–June) 2014 at n = 6 schools, Essex, UK.