An ecological model of motor behavior presented by Davis and Burton (12) suggests that the qualitative and quantitative aspects of motor behavior for all persons emerge from three sets of constraints: performer, environmental, and task. The involvement and performance of movement activities by children with physical impairments may be optimized by carefully manipulating one or more of these three types of constraints, and by recognizing and accepting that the optimal movement patterns used by these children with unique performer constraints may differ from those exhibited by other children.
Allen W Burton is with the Divivision of Kinesiology, 1900 University Ave. S.E., University of Minnesota, Minneapolis, MN 55455-0155. Walter E. Davis is with the School of PERD, 162 Memorial Gym Annex, Kent State University, Kent, OH 44242.