C. Novel real-life motor outcome: Actigraphy. No existing motor outcome measure can quantify continuous use of the upper extremities during normal activities. The investigators propose to overcome this limitation using actigraphy. Lightweight wrist accelerometers can constantly measure and store subtle movements. Such systems can track movements in disabled persons including those with CP145. Participants will be fitted bilaterally with actiwatches (MotionWatch) to record mean movements every 2 seconds for 48 hour epochs of time (baseline, 1 week, 2 months, 6 months) as well as continuously during the 2 week intervention phase. A standard diary will record sleep/wake patterns and activities. Importantly, The investigators will do this bilaterally (2 watches) to generate the primary outcome of an actigraphic asymmetry index (AAI) calculated between the affected and unaffected limbs.