Table 4.

TIDier checklist

Item
1. Brief name	The EX-FRAIL CKD exercise programme.
2. Rationale	Described in ‘Introduction’ and section titled ‘Intervention development’.
3. Materials	Exercise guidebook, exercise diary and wrist/ankle weights.
4. Procedures	Described in section titled ‘Intervention description’ and ‘ Timeline’.
5. Provider	Exercise programme education will be delivered by a physiotherapist experienced in exercise prescription. Weekly telephone calls will be performed by the physiotherapist or specialist trainee with relevant experience.
6. Modes of delivery	Face-to-face exercise education session followed by weekly telephone calls.
7. Location	Exercise education sessions will be delivered in a private room at NIHR Lancashire Clinical Research Facility. All exercise sessions will be completed in the participant’s own home.
8. Frequency and duration	All participants will have an exercise education session lasting approximately 60 min. Participants will aim to perform three exercise sessions at home per week, lasting approximately 30–45 min each.
9. Tailoring	Initial exercise level will be determined by frailty status, unless the physiotherapist determines otherwise due to safety concerns. An alternative exercise will be provided if a participant is unable to perform a specific exercise as originally intended.
10. Modifications	Cannot be described until study completion.
11. Adherence and fidelity: planned	Exercises will be delivered as described in the exercise guidebook. If modification is needed, the participant (and study team) will be provided additional documentation. Adherence will be assessed during telephone calls and review of the participant’s exercise diary. Outcomes of telephone calls will be discussed to maintain fidelity.
12. Adherence and fidelity: actual	Cannot be described until study completion.

CKD, chronic kidney disease; NIHR, National Institute of Health Research; TIDier, Template for Intervention Description and Replication.