Synergistic muscle activation during maximum voluntary contractions in children with and without spastic cerebral palsy.

摘要: We examined muscle recruitment patterns in children with cerebral palsy (CP) and comparison without CP under conditions of maximum voluntary contractions. Three groups participated the study: (1) 12 diplegic (eight males, four females; age range 4–10y, mean 7y [SD 2y 4mo]); (2) six hemiplegic (four two 5–10y, 4mo 2y]); (3) 13 normal motor function (seven 4–11y, 2mo, 2y]). The were classified according to Gross Motor Function Classification System: eight Level I, five II, III, one was I V. Surface electromyography recorded from proximal distal lower extremity (LE) muscles. Children more frequently activated a other than intended prime mover first, compared children, especially when muscle. For example, during ankle plantar flexion, lateral gastrocnemius mover, hemiplegia showed preactivation tibialis anterior diplegia medial hamstring coactivation. In conclusion, considerable differences how LE muscles voluntarily activated. Greater understanding variety tasks may provide new directions for control retraining or forms intervention.