Table 1.
Participant characteristics.
| CP group |
TD group |
||
|---|---|---|---|
| Adequate muscle strength group (n = 17) | Moderate muscle strength group (n = 13) | Typical: typical muscle strength group (n = 15) | |
| Average age (SD) | 9 y 6 m (±1 y 3 m) | 6 y 5 m (±2 y 3 m) | 8 y 6 m (±1 y 3 m) |
| Average weight (SD) | 31.8 kg (±10.7 kg) | 24.3 kg (±9.3 kg) | 29.8 kg (±7.6 kg) |
| Median (IQR) range of motion (degrees) | |||
| Hip extension | 0° (0–0°) | 0° (-5–0°) | Nr |
| Knee extension | 0° (0–0°) | 0° (0–5°) | Nr |
| Ankle dorsiflexion | 0° (0–10°) | 5° (0–10°) | Nr |
| Selectivity (range 0–2) | |||
| Knee flexors | 2 (2–2) | 1.5 (1.5–2) | Nr |
| Knee extensors | 2 (2–2) | 2 (1.5–2) | Nr |
| Ankle plantarflexors | 1.5 (1.25–2) | 1.5 (1–1.5) | Nr |
| Diagnosis | CP | CP | TD |
| Unilateral | 9 | 3 | Na |
| Bilateral | 8 | 10 | Na |
| GMFCS | |||
| I | 13 | 4 | Na |
| II | 4 | 9 | Na |
SD, standard deviation; y, years; m, months; IQR, interquartile range; range of motion, maximal joint angle achieved passively; Nr, normal; CP, cerebral palsy; TD, typically developing; Na, not applicable; GMFCS, Gross Motor Functional Classification Score.