Efficacy of CO-OP Approach With and Without Parental Coaching: RCT Study Protocol: Efficacité de l'approche CO-OP avec et sans coaching parental : protocole d'essai clinique randomisé.

Background.: Developmental coordination disorder (DCD) leads to decreased occupational performance and restricted participation. Cognitive Orientation to daily Occupational Performance Approach (CO-OP) is effective, and as parental support is a key element, it seems relevant to investigate.

Purpose.: To describe a study protocol that will compare CO-OP with and without Occupational Performance Coaching (OPC) on activity and participation of children with DCD.

Method.: Randomized controlled with seven to 12-year-olds, assigned to either experimental (CO-OP+OPC) or control (CO-OP) group, both receiving traditional CO-OP, with four additional parental group sessions for the experimental group.

Key Issues.: Actual and perceived occupational performance and satisfaction of children's chosen goals and participation, motor performance and executive function. Measures will be obtained at baseline, post-intervention, and at 3-month follow-up.

Implications.: Detailed description of an intervention protocol may help further replication and may contribute to clarify if a boost on parents' participation promotes better outcomes for children with DCD.

Trial Registration.: Clinical Trials, NCT02893852. (https://clinicaltrials.gov/ct2/show/NCT02893852).