Acceptability of FitSkills in the Irish Context for Young People With Childhood-onset Physical Disability

Participant recruitment (reach) will be assessed by the number of individuals who express interest in the study and the proportion who are eligible and enrolled.

Additional descriptive data will be collected on recruitment, including the number of enquiries and completed expressions of interest, how participants heard about the study (e.g., healthcare professional referral, flyer, or other sources), eligibility outcomes (number eligible, number excluded, and reasons for exclusion), and basic demographic characteristics (age, gender, disability type, and location) of individuals expressing interest.

Adoption will be assessed by the number and proportion of healthcare and physical activity professionals who are invited and agree to support implementation of the intervention.

Additional descriptive data will be collected on professional characteristics (e.g., profession, service type, public or private service, and service location) and reasons for non-participation (e.g., work capacity constraints or lack of interest).

Intervention feasibility will be assessed by the proportion of participant pairs who complete the programme at 12 weeks.

Additional descriptive data will be collected, including the number of pairs successfully matched (young people and student mentors), the number attending the group orientation session, and participant engagement (e.g., use of the challenge board).

Fidelity to programme content and adverse events will be monitored and recorded using exercise log-books.

Feasibility will be assessed using the Feasibility of Intervention Measure (FIM), completed by healthcare and physical activity professionals following completion of their involvement in implementation.

The FIM is a 4-item scale assessing perceived feasibility (e.g., whether the programme is possible, practical, and easy to implement), with responses rated on a 5-point Likert scale ranging from completely disagree to completely agree.

Feasibility of collaboration between healthcare and physical activity professionals will be assessed using a communication logbook completed by professionals involved in implementation.

The logbook will capture the number of contacts between professionals and characteristics of communication, including reason for contact, type of communication, and outcome of communication.

Acceptability of the intervention will be assessed through online focus groups conducted with healthcare and physical activity professionals following implementation.

Focus groups will explore participants' perceptions of the acceptability of the programme, including its perceived appropriateness, burden, and satisfaction with implementation.

Acceptability will be assessed using the Acceptability of Intervention Measure (AIM), completed by healthcare and physical activity professionals.

The AIM is a 4-item scale assessing perceived acceptability (e.g., whether the programme is appealing, meets approval, and is welcomed), with responses rated on a 5-point Likert scale ranging from completely disagree to completely agree.

Appropriateness will be assessed using the Intervention Appropriateness Measure (IAM), completed by healthcare and physical activity professionals.

The IAM is a scale assessing perceived appropriateness (i.e., the extent to which the programme is suitable and relevant), with responses rated on a 5-point Likert scale ranging from completely disagree to completely agree.

Acceptability of the intervention will be assessed through online semi-structured interviews conducted with young people with disability who participated in the programme.

Interviews will explore participants' perceptions of acceptability, including satisfaction with the programme, perceived benefits, and burden of participation.

Exercise self-efficacy will be assessed using the Exercise Self-Efficacy Scale, completed by young people with childhood-onset physical disability.

The scale consists of 10 items assessing confidence in engaging in physical activity, with responses rated on a 4-point Likert scale (not at all true, rarely true, sometimes true, always true). Total scores range from 10 to 40, with higher scores indicating greater exercise self-efficacy.

Mental health and well-being will be assessed using the Mental Health Continuum-Short Form (MHC-SF), completed by young people with childhood-onset physical disability.

The MHC-SF assesses emotional, social, and psychological well-being using a 6-point Likert scale (1 = everyday to 6 = never). Scores can be interpreted using continuous total and domain scores, with higher scores indicating greater well-being. Participants may also be classified as flourishing, moderately mentally healthy, or languishing based on established scoring criteria.