Table 1. Patient background.
| Characteristic | Lumbar spondylolysis | Without lumbar spondylolysis | P value |
| Number | 8 | 65 | |
| GMFCS (I/II/III) | 3/5/0 | 20/36/9 | 0.132 |
| Age, years | 12.9 | 10 | 0.141 |
| Sex (male/female) | 5/3 | 35/30 | 0.648 |
| Type of paralysis (SD/SH) | 5/3 | 48/17 | 0.945 |
| Height, cm | 141.6 | 129.8 | 0.129 |
| Weight, kg | 47.9 | 31.3 | 0.043* |
| BMI, kg/m2 | 22.5 | 17.8 | 0.031* |
| FMS 5 m | 5.125 | 5.11 | 0.77 |
| 50 m | 5.00 | 4.94 | 0.976 |
| 500 m | 4.75 | 4.58 | 0.831 |
| Back pain (yes/no) | 2/6 | 0/65 | 0.0001* |
| Gestation, days | 232 | 229 | 0.696 |
| Birth weight, g | 2034.9 | 1935 | 0.832 |
*P<0.05.
Data given as number or mean.