LBP during follow-up | Study year 2011–2012 | Study year 2012–2013 | Study year 2013–2014 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
n | Mean | SD | P value | n | Mean | SD | P value | n | Mean | SD | P value | ||
Age, years | No | 106 | 16.2 | 1.7 | 0.009 | 138 | 16.7 | 2.0 | 0.659 | 266 | 16.1 | 2.0 | 0.109 |
Yes | 6 | 18.0 | 1.5 | 10 | 16.3 | 2.2 | 32 | 15.5 | 2.0 | ||||
Sex, % | 100 | 20.3 | 5.2 | 0.743 | 128 | 19.3 | 4.4 | 0.569 | 228 | 18.8 | 3.9 | 0.043 | |
Female | No | 80 | 95.2 | 85 | 92.4 | 107 | 88.4 | ||||||
Yes | 4 | 4.8 | 7 | 7.6 | 14 | 11.6 | |||||||
Male | No | 26 | 92.9 | 53 | 94.6 | 159 | 89.8 | ||||||
Yes | 2 | 7.1 | 3 | 5.4 | 18 | 10.2 | |||||||
Height, cm | No | 106 | 170.4 | 8.5 | 0.138 | 138 | 173.2 | 9.1 | 0.609 | 259 | 174.2 | 9.4 | 0.929 |
Yes | 6 | 175.8 | 10.9 | 10 | 171.7 | 10.1 | 32 | 174.1 | 7.7 | ||||
Weight, kg | No | 106 | 63.8 | 9.8 | 0.646 | 138 | 66.9 | 10.5 | 0.124 | 259 | 66.3 | 11.0 | 0.598 |
Yes | 6 | 67.3 | 12.4 | 10 | 62.1 | 8.4 | 32 | 65.1 | 9.0 | ||||
BMI | No | 106 | 21.9 | 2.6 | 0.776 | 138 | 22.2 | 2.6 | 0.140 | 259 | 21.8 | 2.8 | 0.633 |
Yes | 6 | 21.6 | 2.0 | 10 | 21.0 | 1.6 | 32 | 21.4 | 2.1 | ||||
Sport, % | |||||||||||||
Basketball | No | 58 | 96.7 | 0.307 | 58 | 96.7 | 0.717 | 133 | 88.1 | 0.504 | |||
Yes | 2 | 66.7 | 2 | 3.3 | 18 | 11.9 | |||||||
Floorball | No | 48 | 92.3 | 80 | 90.9 | 133 | 90.5 | ||||||
Yes | 4 | 7.7 | 8 | 9.1 | 14 | 9.5 | |||||||
Nicotine use, % | |||||||||||||
No | No | 103 | 94.5 | 0.676 | 134 | 93.7 | 0.230 | 257 | 89.9 | 0.103 | |||
Yes | 6 | 5.5 | 9 | 6.3 | 29 | 10.1 | |||||||
Yes | No | 3 | 100.0 | 4 | 80.0 | 9 | 75.0 | ||||||
Yes | 0 | 0.0 | 1 | 20.0 | 3 | 25.0 | |||||||
Peak vGRF, N/kg | No | 100 | 20.3 | 5.2 | 0.743 | 128 | 19.3 | 4.4 | 0.569 | 228 | 18.8 | 3.9 | 0.043 |
Yes | 5 | 19.7 | 4.2 | 6 | 18.0 | 3.7 | 29 | 20.2 | 4.2 | ||||
Absolute Peak vGRF, N | No | 100 | 1289.1 | 392.3 | 0.774 | 128 | 1269.1 | 357.4 | 0.224 | 228 | 1216.7 | 321.3 | 0.122 |
Yes | 5 | 1316.5 | 345.5 | 6 | 1077.4 | 118.5 | 29 | 1298.2 | 308.7 | ||||
Peak vGRF asymmetry, N/kg | No | 100 | 2.5 | 2.0 | 0.584 | 128 | 2.0 | 1.8 | 0.464 | 228 | 2.1 | 1.8 | 0.641 |
Yes | 5 | 2.1 | 2.0 | 6 | 2.4 | 1.8 | 29 | 2.1 | 2.0 | ||||
Absolute Peak vGRF asymmetry, N | No | 100 | 161.2 | 131.6 | 0.662 | 128 | 131.1 | 123.4 | 0.572 | 228 | 133.6 | 119.4 | 0.735 |
Yes | 5 | 143.5 | 144.3 | 6 | 143.1 | 95.9 | 29 | 132.9 | 125.8 | ||||
Left leg femur-pelvic angle, degrees | No | 85 | 80.9 | 4.5 | 0.375 | 103 | 79.9 | 4.4 | 0.303 | 202 | 80.5 | 5.0 | 0.740 |
Yes | 6 | 78.9 | 5.4 | 7 | 79.1 | 7.2 | 20 | 80.1 | 5.3 | ||||
Right leg femur-pelvic angle, degrees | No | 91 | 77.5 | 4.9 | 0.905 | 95 | 76.9 | 4.5 | 0.587 | 199 | 77.1 | 4.7 | 0.033 |
Yes | 6 | 77.6 | 5.4 | 7 | 75.6 | 5.4 | 22 | 74.6 | 4.9 | ||||
Team practice hours during the follow-up, mean hours | No | 106 | 238.1 | 104.5 | 0.341 | 138 | 201.1 | 89.4 | 0.356 | 266 | 229.0 | 114.6 | 0.923 |
Yes | 6 | 279.6 | 77.7 | 10 | 227.8 | 60.2 | 32 | 227.0 | 101.5 | ||||
Game hours during the follow-up, mean hours | No | 106 | 7.1 | 6.0 | 0.597 | 138 | 8.4 | 5.8 | 0.247 | 266 | 9.1 | 6.0 | 0.240 |
Yes | 6 | 5.8 | 4.8 | 10 | 10.6 | 4.8 | 32 | 7.8 | 4.4 |