“…32,38,43,57,59,69,82,84 The 38 studies retrieved on the activity component showed differences between levels of the GMFCS. The main outcomes investigated were mobility, 16,17,31,35,39,46,49,51,53,54,58,60,65,72,76,78,83 walking, carrying, moving, and handling objects, 31,32,35,49,50,54,65,66,71,76,82 selfcare, 31,39,46,51,53,54,66,72,[79][80][81] and communication. 36,41,47,[61]…”