Results of comparisons between boys and girls for anthropometrics and demographics, questionnaires and sports performance tests
| Mean±SD | Mean±SD | Mean±SD | P values | |
| Anthropometrics and demographics | ||||
| Height (cm) | 165.5±8.7 | 167.1±9.6 | 163.1±6.4 | 0.001 |
| Weight (kg) | 54.0±9.0 | 54.0±10.2 | 54.2±6.9 | 0.87 |
| BMI (kg bw/m2) | 19.6±2.2 | 19.2±2.1 | 20.3±2.1 | <0.000 |
| Chronological age (years) | 13.94±0.26 | 13.94±0.26 | 13.94±0.27 | 0.98 |
| Maturity offset (years) | 0.49±1.14 | –0.27±0.75 | 1.66±0.43 | <0.000 |
| Sports | ||||
| Contact | 127 (71.3%) | 90 (83.3%) | 37 (52.9%) | |
| Non-contact | 38 (21.3%) | 13 (12.0%) | 25 (35.7%) | <0.000* |
| Aesthetic | 13 (7.3%) | 5 (4.6%) | 8 (11.4%) | |
| Questionnaires | ||||
| Pain groups | ||||
| Infrequent pain | 31 (18.6%) | 22 (22.0%) | 9 (13.4%) | |
| Frequent pain | 85 (50.9%) | 51 (51.0%) | 34 (50.7%) | 0.27* |
| Constant pain | 51 (30.5%) | 27 (27.0%) | 24 (35.8%) | |
| Pain intensity† | 3.0±2.2 | 3.0±2.2 | 3.1±2.1 | 0.70 |
| EQ-5D‡ | 0.86±0.13 | 0.87±0.13 | 0.85±0.14 | 0.19 |
| Sports performance tests | ||||
| 20 m sprint (s) | 3.36±0.19 | 3.33±0.20 | 3.40±0.16 | 0.01 |
| Agility T-test (s) | 10.82±0.62 | 10.66±0.62 | 11.06±0.56 | <0.000 |
| CMJ-AS (cm) | 34.2±5.8 | 35.4±6.0 | 32.4±5.0 | 0.001 |
| Grip strength (kg) | 29.7±6.3 | 30.9±7.0 | 27.9±4.6 | 0.001 |
The results were analysed with Student’s t-test and are presented as mean±SD or were analysed with χ2 test and are presented as n (%).
* Analysed with χ2 test.
† 0–10 points, scored from best to worst (n=163).
‡ 0.00–1.00, scored from worst to best (n=172).
BMI, body mass index; Bw, body weight; CMJ-AS, counter-movement jump with arm swing.