Table 3.

Comparison of normalized to weight force data between patients with Gross Motor Function Classification System (GMFCS) I–II and patients with GMFCS III–IV.

	GMFCS I–II (n = 121)	GMFCS III–IV (n = 39)	p
Hip flexiona	0.223 (±0.081)	0.145 (±0.014)	<0.001*
Hip extensiona	0.305 (±0.094)	0.246 (±0.111)	0.001*
Hip adductiona	0.227 (±0.091)	0.171 (±0.099)	0.001*
Hip abductiona	0.202 (±0.081)	0.105 (±0.083)	<0.001*
Knee flexiona	0.157 (±0.087)	0.080 (±0.084)	<0.001*
Knee extensiona	0.222 (±0.083)	0.190 (±0.095)	0.041*
Ankle dorsiflexionb	0.133 (0–0.355)	0.091 (0–0.197)	0.001**

^aMean values (SD).

^bMedian values (range).

^*Comparison across groups with t test.

^**Comparison across groups with Mann–Whitney U test.