Cerebral Palsy Early Mobility Training

Inclusion Criteria: * 12-36 months of age * Gross motor function below the 10th percentile for age \[Bayley Scales of Infant and Toddler Development (BSID), BSID-III, corrected for gestational age, if applicable, under the age of two years\]. * Diagnosis of CP or neurological sign associated with CP (i.e. spasticity). * Ability to initiate pulling to stand at a surface \[Score of 1 on gross motor function measure (GMFM) Item 52\]. * Cognitive ability to follow one-step commands. Exclusion Criteria: * Secondary orthopedic, neuromuscular or cardiovascular condition unrelated to CP. * General muscle hypotonia, without other neurological signs associated with CP. * Independent walking ability (Score of 3 on GMFM Item 69 - Walks forward 10 steps). * At or above the 50th percentile of GMFCS Level I. * History of surgery or injury to the lower extremities in the past 6 months.