Cerebral palsy (CP) is a childhood-onset motor disability affecting movement and posture that is caused by permanent brain disturbances. 1 Low muscle force generation 2,3 and muscle fatigue are among the most commonly reported impairments in CP. 4 Low muscle force generation has been associated with a primary impairment of muscle activation, 2,5,6 including reduced muscle activity levels when performing maximum voluntary contraction (MVC), reduced neuron-firing rates, and less coordinated muscle activation compared with