Inclusion Criteria:  Confirmed diagnosis of spastic cerebral palsy Aged 4-11 years GMFCS levels I-III (GMFCS = Gross Motor Function Classification Score, expressing the overall functional level of impairment) Sufficient cooperation to comprehend and complete the test procedure Additional exclusion criterion for the intervention group specifically: Indication for BoNT injections  Exclusion Criteria:  Non-ambulatory Botulinum toxin A injections six months prior to enrollment Lower limb surgery two years prior to enrollment Previous selective dorsal rhizotomy Presence of ataxia or dystonia Cognitive problems that impede measurements Severe co-morbidities (severe epilepsy, non-correctable visual impairment, autism spectrum disorders, mental problems that prevent comprehensiveness of the tasks) Hospitalization after the BoNT treatment for intensive physical therapy Intrathecal baclofen pump For the control group: new intervention planned within 3 months Additional exclusion criterion for the control group specifically: new intervention planned within 3 months