This study evaluates the feasibility, fidelity, and acceptability of a co-designed intervention developed within the HIP-ME-UP research program to promote early and frequent mobility among older adults hospitalized after hip fracture surgery.
Despite clinical recommendations for early mobilization, patients with hip fracture are often inactive during hospitalization, which may negatively impact recovery. The intervention was developed in collaboration with healthcare professionals, management, patients, and caregivers to address this gap.
The HIP-ME-UP intervention consists of four components:
1. A dedicated porter supporting physiotherapy and occupational therapy mobility activities
2. A standardized training concept to promote independence in getting in and out of bed
3. Group-based exercise supervised by physiotherapists
4. Personal activities of daily living (P-ADL) performed in the bathroom when feasible
The study uses a single-site, single-group feasibility design and will be conducted over an approximately 8-week period in orthopedic wards at Copenhagen University Hospital Hvidovre.
The primary aim is to assess whether the intervention can be delivered as intended in routine clinical practice. Feasibility outcomes include recruitment, retention, and data completeness. Fidelity will be assessed in terms of adherence to intervention content, dose, frequency, and quality of delivery. Acceptability will be explored through interviews and questionnaire responses among patients and healthcare professionals.
Clinical and functional outcomes, including mobility, physical activity, pain, and health-related quality of life, will be collected descriptively to support interpretation of feasibility findings and potential mechanisms of impact.
Feasibility will be evaluated using predefined progression criteria focusing on recruitment, retention, fidelity, and acceptability. These criteria will be interpreted using a traffic-light approach categorizing results as "stop", "amend", or "go". Progression decisions will be based on an integrated assessment of quantitative feasibility outcomes together with qualitative process data describing barriers, facilitators, and adaptations during implementation.
The findings will be reviewed by the HIP-ME-UP research group and steering committee to determine whether the intervention and trial procedures are sufficiently feasible to proceed to a future large-scale randomized effectiveness trial. The study is not designed to evaluate clinical effectiveness.
The study applies a feasibility-oriented outcome framework without hierarchical prioritization of outcomes. Feasibility, fidelity, acceptability, process data, and descriptive clinical outcomes are assessed in parallel, each contributing equally to a comprehensive evaluation of whether and how the HIP-ME-UP intervention can be delivered in routine clinical practice.
The study was assessed by the Regional Commitee on Health Research Ethics of the Capital Region of Denmark with journal no. H-26006578.
