This study demonstrates increased mean frequency in the trunk and hip muscles in early
walkers with CP. Stride-to-stride variability in mean frequency was also increased in CP.
The increased muscle activation and decreased synchrony in the trunk muscles are
consistent with muscle behavior of the lower extremities in CP. The clinical implications of
this work are that postural muscle training interventions should be investigated in CP to
encourage the development of more effective and stable trunk muscle activation patterns in
these children.