Participation in physical activity by adolescents with physical disability: Protocol for a national participation snapshot and Delphi consensus study ("Youth Experience Matters").

Young people with physical disability experience challenges to being physically active. To attain the health benefits of physical activity (PA) and sustain engagement, it is essential that participation is meaningful and enjoyable. This study aims to describe current participation in PA by adolescents with physical disability in Ireland, and to establish consensus on their priorities for enhancing physical activity participation. A parallel convergent mixed methods study will be undertaken, comprising a national cross-sectional quantitative assessment of PA participation ("Participation Snapshot") and Delphi consensus study ("Delphi"). Adolescents (n=100) aged 13-17 years with a physical disability will be invited to take part. The Participation Snapshot primary outcome is the Children's Assessment of Participation and Enjoyment (CAPE). Contextual factors including underlying medical diagnosis, demographics, mobility (Functional Mobility Scale), hand function (Manual Ability Classification System) and health related quality of life (Child Health Utility 9D) will also be collected. The Delphi will comprise two to four survey rounds, until consensus is reached. Round 1 consists of a bespoke survey, designed and piloted with a public and patient involvement (PPI) panel, with open-ended questions and Likert scales inviting contributions from adolescents on their prior experience and ideas to enhance participation. Responses will be analysed using inductive thematic analysis to construct items and themes, which will then be deductively mapped to the "F-words" and the family of Participation-Related Constructs frameworks. These items will be presented back to participants in subsequent rounds for selection and ranking, until consensus is achieved on the "top 10 priorities" for enhancing PA participation. The project team and PPI panel will then co-design dissemination material and identify targets for dissemination to relevant stakeholder or policy groups. The findings will provide a basis for developing interventions aiming to enhance future PA participation for adolescents with physical disability.