Table 3. Mean weekend levels of physical activity by mode of transport to school.
| Activity counts | Walking/Cycling (n = 1393) | Public transport (n = 161) | Car (n = 481) | ||||
| Mean(95% CI) | Mean (95% CI) | Mean difference (95% CI) | p (diff) | Mean (95% CI) | Mean difference (95% CI) | p (diff) | |
| Counts | 356,016 (346,628 , 365,405) | 367,717 (344,464, 390,969) | 11,700 (−12,122, 35,523) | 0.34 | 336,762 (322,775, 350,748) | −19,255 (−34,008, −4,502) | 0.01 |
| Counts per minute | 450 (439, 462) | 466 (437, 495) | 15 (−15, 45) | 0.32 | 430 (413, 448) | −20 (−38, −1) | 0.04 |
| Steps | 8,218 (8,009, 8,428) | 8,343 (7,781, 8,904) | 124 (−459, 708) | 0.68 | 7,408 (7,079, 7,736) | −811 (−1,172, −450) | <0.0001 |
| Time (min) spent in | |||||||
| Sedentary | 567.8 (558.4, 577.3) | 562.0 (537.7, 586.4) | −5.8 (−30.9, 19.3) | 0.65 | 564.5 (550.1, 578.9) | −3.3 (−18.8, 12.2) | 0.68 |
| Light | 173.2 (168.7, 177.7) | 171.2 (162.8, 179.6) | −2.0 (−9.9, 5.9) | 0.62 | 170.2 (164.5, 175.9) | −3.0 (−8.0, 1.9) | 0.23 |
| Moderate | 42.3 (40.8, 43.8) | 44.4 (41.4, 47.5) | 2.1 (−0.9, 5.2) | 0.16 | 38.2 (36.2, 40.2) | −4.1 (−6.0, −2.2) | <0.0001 |
| Vigorous | 18.2 (17.3, 19.1) | 19.7 (17.7, 21.7) | 1.4 (−0.6, 3.4) | 0.16 | 17.2 (16.0, 18.5) | −1.0 (−2.3, 0.2) | 0.10 |
| MVPA | 60.5 (58.3, 62.8) | 64.1 (59.4, 68.8) | 3.5 (−1.1, 8.2) | 0.13 | 55.4 (52.4, 58.4) | −5.1 (−8.0, −2.3) | <0.001 |
Mean differences compare level of physical activity in children who travel by public transport or car, to those who walk or cycle to and from school.
Analyses are adjusted for gender, age quartiles, day order, day of week (i.e., Saturday or Sunday), month, ethnicity and random effects for child and school.