Variable | Time 1 (T1) | Time 2 (T2) | p-value | ||||||
---|---|---|---|---|---|---|---|---|---|
N | % | M | SD | N | % | M | SD | Â | |
Personal characteristics | |||||||||
 Sex | 187 |  |  |  |  |  |  |  |  |
  Boys | 149 | 79.7 |  |  |  |  |  |  |  |
  Girls | 38 | 20.3 |  |  |  |  |  |  |  |
Age (years) | 186 | Â | 14.41 | 1.47 | Â | Â | Â | Â | Â |
Youth development | |||||||||
 SDQ (total) | 170 |  | 10.89 | 5.00 | 171 |  | 11.18 | 4.88 | .67 |
 Pro-social behaviour | 185 |  | 7.42 | 1.90 | 184 |  | 7.36 | 1.89 | .55 |
 School performance | 187 |  | 3.30 | 0.82 | 187 |  | 3.29 | 0.83 | .84 |
 Subjective health | 187 |  | 3.44 | 1.05 | 187 |  | 3.43 | 0.92 | .76 |
 Well-being | 187 |  | 3.40 | 1.00 | 187 |  | 3.35 | 0.86 | .59 |
Assets | |||||||||
 Self-regulation skills | |||||||||
  Planning | 147 |  | 2.42 | 0.58 | 141 |  | 2.46 | 0.62 | .71 |
  Monitoring | 149 |  | 2.54 | 0.57 | 139 |  | 2.50 | 0.64 | .48 |
  Effort | 149 |  | 2.69 | 0.51 | 137 |  | 2.67 | 0.51 | .34 |
Sense of coherence | |||||||||
 Sense of coherence | 178 |  | 34.09 | 7.82 | 180 |  | 33.52 | 7.77 | .29 |
Sports participation | |||||||||
 Frequency of sport (average week) | 186 |  |  |  | 186 |  |  |  |  |
  Did not sport | 50 | 26.9 |  |  | 54 | 29.0 |  |  |  |
  1 or 2 times a week | 70 | 37.6 |  |  | 63 | 33.8 |  |  |  |
  3 or more times a week | 66 | 35.5 |  |  | 69 | 37.1 |  |  |  |
 Duration of sport (average per activity) | 185 |  |  |  | 185 |  |  |  |  |
  Did not sport | 50 | 27.0 |  |  | 55 | 29.7 |  |  |  |
   < ½ an hour | 7 | 3.8 |  |  | 9 | 4.9 |  |  |  |
  Between ½ - 1 h | 17 | 9.2 |  |  | 13 | 7.0 |  |  |  |
  Between 1 and 2 h | 93 | 50.3 |  |  | 95 | 51.4 |  |  |  |
  Between 2 and 3 h | 10 | 5.4 |  |  | 9 | 4.9 |  |  |  |
  Longer than 3 h | 8 | 4.3 |  |  | 4 | 2.2 |  |  |  |
 Membership of sports/fitness club | 186 |  |  |  | 185 |  |  |  |  |
  No | 84 | 45.2 |  |  | 97 | 52.4 |  |  |  |
  Yes | 102 | 54.8 |  |  | 88 | 47.6 |  |  |  |