Table 1 Participant baseline characteristics
| Â | Intervention:all n=362 | Intervention:completers n=91 | Intervention:non-completers n=271 | Control n=259 | ||||
|---|---|---|---|---|---|---|---|---|
Characteristic | n | Mean ± SD or percent | n | Mean ± SD or percent | n | Mean ± SD or percent | n | Mean ± SD or percent |
Demographics | Â | Â | Â | Â | Â | Â | Â | Â |
Age (yr) | 350 | 13.4 ± 0.9 | 88 | 13.2 ± 0.9 | 262 | 13.4 ± 0.9 | 238 | 13.4 ± 0.9 |
BMI | 263 | 19.9 ± 3.9 | 66 | 19.8 ± 4.1 | 197 | 20.0 ± 3.8 | 199 | 19.6 ± 3.5 |
Live in two parent households | 362 | 78.7 | 91 | 74.7 | 271 | 80.1 | 259 | 74.5 |
Health | Â | Â | Â | Â | Â | Â | Â | Â |
General health – excellent or good | 333 | 71.2 | 85 | 80.0 | 248 | 68.1 | 233 | 73.0 |
PedsQL physical functioning score | 358 | 83.9 ± 13.0 | 90 | 85.7 ± 12.0 | 268 | 83.3 ± 13.2 | 248 | 84.5 ± 13.2 |
PedsQL psychosocial functioning score | 357 | 80.6 ± 14.3 | 90 | 82.0 ± 12.9 | 267 | 80.1 ± 14.7 | 247 | 81.5 ± 13.6 |
PedsQL total score | 357 | 81.8 ± 13.0 | 90 | 83.3 ± 11.7 | 267 | 81.2 ± 13.4 | 248 | 79.8 ± 15.4 |
Physical activity: | Â | Â | Â | Â | Â | Â | Â | Â |
MET-mins of LTMVPA (24-hr) | 136 | 546.4 ± 489.1 | 27 | 955.2 ± 590.2 | 113 | 454.4 ± 413.6 | 107 | 624.5 ± 515.8 |
Mins of LTMVPA (24-hr) | 136 | 79.2 ± 66.3 | 27 | 123.6 ± 77.6 | 113 | 69.2 ± 59.4 | 107 | 88.6 ± 67.1 |
Number of days in past seven with at least 60 min of LTMVPA | 358 | 5.0 ± 1.8 | 90 | 5.3 ± 1.7 | 268 | 4.9 ± 1.8 | 259 | 4.8 ± 1.6 |
Met PA guidelines in past seven days1 | 358 | 11.2 | 90 | 12.2 | 268 | 10.8 | 259 | 5.8 |
Sport club/leisure centre member | 358 | 55.0 | 90 | 61.1 | 268 | 53.0 | 256 | 59.4 |
Potential mediators: | Â | Â | Â | Â | Â | Â | Â | Â |
Perceived sports competence | 349 | 3.37 ± 0.74 | 87 | 3.62 ± 0.62 | 262 | 3.29 ± 0.75 | 258 | 3.37 ± 0.74 |
Self-management strategies | 347 | 3.42 ± 0.75 | 86 | 3.55 ± 0.7 | 261 | 3.38 ± 0.76 | 251 | 3.48 ± 0.77 |
Perceived behavioral control | 358 | 3.92 ± 0.66 | 88 | 3.94 ± 0.64 | 270 | 3.91 ± 0.67 | 255 | 3.96 ± 0.59 |
Outcome expectation | 351 | 36.54 ± 5.53 | 85 | 37.84 ± 5.02 | 266 | 36.12 ± 5.63 | 253 | 36.37 ± 5.37 |
Outcome expectancy-value | 346 | 152.87 ± 48.21 | 84 | 161.73 ± 46.14 | 262 | 150.03 ± 48.6 | 246 | 152.63 ± 46.73 |
Self-efficacy | 339 | 2.83 ± 0.72 | 82 | 2.87 ± 0.68 | 257 | 2.81 ± 0.73 | 244 | 2.79 ± 0.69 |
PA enjoyment | 352 | 23.81 ± 5.65 | 89 | 24.88 ± 4.93 | 263 | 23.44 ± 5.84 | 250 | 24.04 ± 4.72 |
Sedentary enjoyment | 351 | 4.64 ± 0.77 | 89 | 4.59 ± 0.74 | 262 | 4.66 ± 0.78 | 245 | 4.78 ± 0.70 |
Personal barriers | 343 | 2.31 ± 0.77 | 90 | 2.18 ± 0.68 | 253 | 2.36 ± 0.8 | 246 | 2.39 ± 0.77 |
Organisation barriers | 348 | 2.01 ± 0.73 | 88 | 2.01 ± 0.67 | 260 | 2.01 ± 0.75 | 243 | 2.02 ± 0.73 |
Family support | 353 | 3.82 ± 1.00 | 89 | 3.91 ± 0.98 | 264 | 3.79 ± 1.01 | 251 | 3.82 ± 0.91 |
Friends support | 357 | 3.43 ± 0.98 | 90 | 3.58 ± 0.91 | 267 | 3.38 ± 1 | 249 | 3.53 ± 0.91 |