Responsiveness of the Seated Postural & Reaching Control Test in Children with Cerebral Palsy: A Preliminary Study

To examine the responsiveness of the Seated Postural &amp; Reaching Control (SP&amp;R-co) test in children with cerebral palsy (CP) classified at levels III to V on the Gross Motor Function Classification System (GMFCS). Eleven children received a motor learning-based intervention. Expert and blinded raters scored pre- and post-intervention SP&amp;R-co test videos. Responsiveness was measured with paired <i>t-</i>tests, and effect sizes with Cohen’s d. Minimum Clinically Important Differences (MCIDs) were estimated for SP&amp;R-co overall and dimension scores. The SP&amp;R-co test was responsive to group improvement in sitting-related postural and reaching control (SP&amp;R-co overall = 48.9 points, <i>p</i> &lt; 0.001). It captured increases in the active (change = 2.4 points, <i>p</i> = 0.040), proactive: bimanual (change = 10.5 points, <i>p</i> = 0.001), proactive: unimanual (change = 19.8 points, <i>p</i> &lt; 0.001), and reactive (change = 15.3 points, <i>p</i> = 0.016) dimensions. Most children showed overall score improvements exceeding the MCID value, whereas clinical improvements in dimension scores varied across children with different GMFCS levels. This preliminary study shows that the SP&amp;R-co test is responsive to clinical changes in postural and reaching control strategies in children with CP who can follow test directions and are classified as GMFCS levels III-V.