The effect of patient-specific factors on responsiveness to robot-assisted gait training in patients with bilateral spastic cerebral palsy.

Abstract

No general recommendations are yet available for the application of robot-assisted treadmill therapy for children with cerebral palsy regarding the length and intensity of the intervention. The aim of the study was to evaluate patient-specific determinants of responsiveness to robot-assisted gait training (RAGT) in patients with bilateral spastic cerebral palsy. During 12 months, the patients underwent 1-4 blocks of RAGT, representing 16-82 TUs. The following parameters were evaluated before (V0) and after each therapeutic block (V1-V4): dimension A (lying and rolling), B (sitting), C (crawling and kneeling), D (standing), E (walking, running and jumping) of the Gross Motor Function Measure (GMFM-88). We evaluated the change in motor functions in relation to the severity of disability, age, gender and number of therapeutic units. Ninety-seven patients aged between 3.7 and 27 years (mean age 10.02 years (SD±5.29); Gross Motor Function Classification System level I [n = 5], II [n = 25], III [n = 48], IV [n = 19]) underwent 16-82 TUs (overall average number 34.06 TUs, SD±16.41) of RAGT. In the patient group, we recorded clinically meaningful improvement and statistically significant improvement (p < 0.001) in gross motor functions with gradual increase in the effect size after each therapeutic block. Using correlation and regression analysis, we found a statistically significant associations between the number of therapeutic units, severity of disability, and improvement in motor functions after RAGT. We have identified two determinants -the severity of disability and the number of therapeutic units -which could have a decisive and predictive character in setting rehabilitation/designing programmes. The duration of the applied RAGT period, frequency and intensity could be a crucial factor for the potential of improvement in children with BS-CP.