Implementing digital devices to increase mobility training for people receiving inpatient rehabilitation: protocol for a feasibility hybrid type II randomized controlled trial
Pilot and Feasibility Studies volume 9, Article number: 69 (2023)
People with mobility limitations can benefit from rehabilitation programs incorporating intensive, repetitive, and task-specific exercises using digital devices such as virtual reality gaming systems, tablet and smartphone applications, and wearable devices. The Activity and MObility UsiNg Technology (AMOUNT) rehabilitation trial (n = 300) showed improvements in mobility in people using these types of digital devices in addition to their usual rehabilitation care when the intervention was provided by an additional study-funded physiotherapist. However, it is not clear if this intervention can be implemented by hospital physiotherapists with a usual clinical load. The AMOUNT Implementation trial aims to explore the feasibility of conducting a large-scale implementation trial.
A pragmatic, assessor blinded, feasibility hybrid type II randomized controlled trial will be undertaken at a public hospital in Australia. There will be two phases. Phase I (Implementation phase) will involve implementing the digital devices into physiotherapy practice. Physiotherapists from the rehabilitation ward will receive a multifaceted implementation strategy guided by the Capabilities, Opportunities, Motivation-Behaviour (COM-B) theoretical model. The implementation strategy includes identifying and training a clinical champion; providing digital devices and education and training; facilitating use of the devices through clinical reasoning sessions and journal clubs; and audit and feedback of exercise dosage documentation. Phase II (Trial phase) will involve randomising 30 eligible inpatients from the same ward into either usual care or usual care plus an additional 30 min or more of exercises using digital devices. This intervention will be provided by the physiotherapists who took part in the implementation phase. We will collect data on feasibility, implementation, and patient-level clinical outcomes. The three primary outcome measures are the extent to which physiotherapists document the dosage of exercises provided to participants (feasibility criteria: exercise practice sheets complete for ≥85% of all participants); ability to recruit participants; and fidelity to the protocol of using digital devices to prescribe exercises (feasibility criteria: average of ≥ 30mins per day for > 50% intervention participants).
This feasibility study will provide important information to guide the planning and conduct of a future large-scale implementation trial.
Australian and New Zealand Clinical Trial Registry; ACTRN12621000938808; registered 19/07/2021. Trial sponsor: Prince of Wales Hospital. 320–346 Barker Street, Randwick, NSW, 2031, Australia. Protocol version: 6.2 7th April 2021.
Rehabilitation is a global priority due to the aging population and the increasing number of people living with the consequences of disease and injury . The importance of rehabilitation has been highlighted in the wake of the long-term effects of COVID-19 . It is well accepted that large numbers of repetitive task-specific exercises should be part of most rehabilitation programs which aim to improve function, particularly rehabilitation programs for the aged and those with neurological conditions [3,4,5]. Repetitive task-specific exercise refers to “an active motor sequence performed repetitively within a single training session, with practice aiming towards a clear functional goal”(5). For example, gait training - where the function of walking is trained by a high number of repetitions within a session. However, observational studies in high-income countries have found that people undertaking inpatient rehabilitation do not perform large numbers of repetitive task-specific exercises [6,7,8]. Thus, strategies need to be investigated to increase the amount of repetitive practice patients perform within inpatient rehabilitation wards. One strategy may include the use of affordable digital devices to provide exercises and monitor the amount of practice and provide feedback. For example, virtual reality gaming systems such as Xbox Kinect (Microsoft, Washington, USA) provide an inexpensive way of encouraging standing and stepping practice, and wearable devices such as the StepWatch (Modus Health, LLC) can be used to monitor physical activity and provide feedback on the number of steps taken a day. Digital devices can be used as part of one-on-one therapy sessions, or to encourage patients to exercise in a semi-supervised or group environment, or on their own.
We undertook a clinical trial (n = 300) using digital devices to provide exercises in rehabilitation. This trial was called The Activity and MObility UsiNg Technology (AMOUNT) rehabilitation trial. We demonstrated clinically important improvements in mobility from baseline to 3 weeks and 6 months in people using digital devices for mobility exercises and overall physical activity in addition to their usual rehabilitation care . Mobility exercises included standing up from a chair, stepping in different directions, and weight shift in standing while playing games using virtual reality or following a digital exercise program.The digital devices were prescribed by a physiotherapist and the prescription was tailored based on patients’ mobility limitations and preferences. The core element of the intervention was 30–60 min of additional task-specific mobility activities 5 days per week using a range of digital devices to enable tailoring and progression. The digital devices included virtual reality gaming systems, tablet and smartphone applications, and wearable devices. Importantly, the participants enjoyed using the digital devices and most rated the devices highly in measures of usability .
Although the first trial, the AMOUNT rehabilitation trial, was a pragmatic trial undertaken in “real-world” clinical settings, the exercises with digital devices provided as part of the intervention were delivered by physiotherapists employed using study funds. To take implementation of this approach to the next level, we need to determine if physiotherapists employed by hospitals can provide exercises using digital devices in addition to their usual therapy and whether devices used in this way improve mobility outcomes. Therefore, we will conduct a feasibility hybrid type II randomized controlled trial [10, 11]. This trial design will enable us to test trial processes to guide the design of a future large-scale implementation trial, pilot strategies to encourage and support physiotherapists to use digital devices as part of their therapy sessions and explore effects of our approach on implementation and patient outcomes. The exercises prescribed with the digital devices will be performed either under the direct supervision of a physiotherapist, as part of a class or in a semi-supervised environment. The digital devices will also provide a way of encouraging patients to practice on their own if deemed safe to do so by their physiotherapist.
The primary aim of this study is to determine the feasibility of conducting a large-scale implementation trial. Specifically, we will determine the feasibility of the following:
Collecting dosage data on the amount of repetitive task-specific practice patients receive as part of therapy;
Recruiting participants in the trial;
Fidelity to the protocol for using digital devices to prescribe appropriate exercises. Specifically, whether physiotherapists can provide 30–60 min of extra therapy on top of usual care using an array of digital devices appropriate for enhancing mobility.
The secondary aims are to:
Determine the processes, resource use and management systems required to enable the conduct of a large-scale implementation trial
Explore impacts on patient-level outcomes to guide the future trial
Explore implementation outcomes and determinants on implementation success in terms of physiotherapists’ capability, opportunity, and motivation to implement digital devices in rehabilitation.
A feasibility hybrid type II randomized controlled trial will be undertaken. There will be two phases: phase I (the implementation phase) and phase II (the trial phase). Phase I will involve delivering strategies to encourage and support the physiotherapists of a general rehabilitation ward to use digital devices as part of their physiotherapy sessions. Phase II will involve randomising patients of the same ward to the intervention or control group. The design of the trial is presented in Fig. 1. The trial will be reported according to the Consolidated Standards of Reporting Trials (CONSORT) statement for randomized pilot and feasibility trials , the Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) statement  (see Additional file 1) as well as the Template for Intervention Description and Replication (TIDieR) checklist for intervention description . The trial has been prospectively registered in the Australia and New Zealand Clinical trial registry, ACTRN12621000938808 and approved by South Eastern Sydney Local Health District Human Research Ethics Committee, 2019/ETH13444.
Setting, therapist-participants, and patient-participants
This study will be conducted in the general rehabilitation ward of Prince of Wales hospital in Sydney, Australia. The ward is a 14-bed adult inpatient ward. Eighty percent of the patients have a neurological condition (mostly stroke), and 20% have other non-neurological conditions such as deconditioning, amputations, and post-cardiac or orthopaedic surgeries. The ward provides a comprehensive multidisciplinary rehabilitation program to patients admitted to the ward through a team comprising of rehabilitation and neurological consultants, nursing staff, physiotherapists, physiotherapy assistants, occupational therapists, occupational therapy assistants, speech therapists, clinical psychologists, neuropsychologists, social workers, and dieticians. The hospital is a teaching site for many universities and the rehabilitation ward usually has students from different disciplines undertaking clinical placements.
Physiotherapy staff working in this setting include full-time, part-time, and job-share roles and includes a combination of senior and junior rotating physiotherapists, allied health assistants and physiotherapy students. The physiotherapy program is provided from Monday to Friday 9am to 4 pm in the physiotherapy gym. There is also a limited Saturday service from 9am to 4 pm provided by a physiotherapist and an assistant. Usually, each patient is timetabled to receive an hour of one-to-one supervised therapy in the morning and in the afternoon. The physiotherapy gym follows an open-door policy where patients can stay back in the gymnasium after a scheduled therapy session to do more physiotherapy in a semi-supervised environment as needed. There are also group sessions where patients exercise together. All patients are encouraged to do as much practice as possible by themselves outside formal therapy sessions with the support of family and friends if necessary.
There are two participant groups, namely, the therapist-participants who will be supported and encouraged to use the digital devices with their patients through a range of implementation strategies, and the patient-participants who will use the digital devices as part of the therapy provided to them by the physiotherapists. The therapist-participants will be included in Phases I and II, and the patient-participants will be included in phase II. It is not possible to blind either participant group due to the nature of the intervention and implementation strategies.
Therapists will be eligible to participate in phases I and II if they.
1.Are physiotherapists who work at the Prince of Wales hospital
2. Are employed full-time or part-time and are permanent or casual, or rotate through the rehabilitation ward during the study period.
University physiotherapy students will not be included as participants in either phase I or II, but they may assist in the delivery of the clinical intervention in phase II under the supervision of physiotherapists enrolled in the study. The students will also be provided with education and training in the use of devices within their first week of placements.
Patients will be eligible to participate in phase II if they
1. Are admitted to the general rehabilitation ward of Prince of Wales hospital and are at least 18 years old
2. Have reduced mobility (Short Physical Performance Battery (SPPB) score of less than 12)
3. Are deemed by a clinician to have the potential to improve their mobility
4. Have a likely life expectancy of more than 6 months
5. Have an anticipated length of stay of ≥ 21 days after the date of randomisation
Patients will be ineligible to participate in phase II if they
1. Have cognitive impairment (Mini Mental State Examination (MMSE)  < 24 or Montreal Cognitive Assessment (MoCA)  < 18) unless their caregiver is present, and willing and able to use digital devices with the patient
2. Have insufficient English language skills to participate in the intervention without an interpreter
3. Have inadequate vision to use the digital devices
4. Have a medical condition(s) precluding exercise (e.g., unstable cardiac disease, uncontrolled hypertension, uncontrolled metabolic diseases, large abdominal aortic aneurysm, or a weight-bearing restriction).
5. Inability to balance safely in standing despite the assistance of a staff member or the nominated support person or walking aid.
Recruitment and allocation
Therapist-participants for phases I and II
A member of the research team will provide physiotherapists of the rehabilitation ward with verbal information about the two phases of the study and provide them with a participant information sheet and consent form. Written informed consent will be obtained.
Patient-participants for phase II
All patients admitted to the rehabilitation ward will be screened against the eligibility criteria by the site coordinator, who will seek advice on patient eligibility from the multidisciplinary rehabilitation team as needed. Details will be recorded into a password protected screening log in Excel. Potential participants who may not be eligible at the first screening will continue to be screened during their inpatient stay and will be invited to participate in the study if subsequently found eligible. Patients who are eligible will be provided verbal information about the study. If the patient is interested in taking part in phase II of the trial, they will be provided with a written participant information sheet and consent form to read. All participants will provide informed written consent before recruitment into the study. Informed consent will be obtained by a researcher who is not responsible for the clinical care of the patient.
Patient-participants will be randomized to an intervention or control group after completion of baseline measures (including 24-h physical activity monitoring). Each participant will be assigned a study ID number and all future documents relating to a participant will use this study number. A variable block randomization schedule will be prepared using the Sampsi command in STATA v14 by a researcher not involved in patient recruitment. The randomization schedule will incorporate stratification for baseline mobility (SPPB score < 6 vs. ≥ 6) and health condition (neurological vs. non-neurological). The trial will use a centralized web-based randomization system stored on REDCap (Research Electronic Data Capture). This will ensure concealment of allocation to groups and an auditable process.
Details of the interventions provided to both patient groups during phase II
Patient-participants in both the intervention and control groups of phase II will receive usual inpatient rehabilitation care. All participants will be assessed by a physiotherapist who will prescribe a series of task-specific exercises to be performed as many times as possible according to their impairments and activity limitations (e.g., practice of standing up or stepping). The conduct of these exercises will be supervised by a physiotherapist, a physiotherapy assistant or physiotherapy student under the overall supervision of a physiotherapist, or by a family member who is educated by a physiotherapist to do so. As is standard practice, the exercises will be individually tailored and progressed. Participants will also receive feedback about their performance, and the exercises will focus on functionally relevant goals. The feedback will be provided in the form of knowledge of performance (e.g., centre of mass movement while shifting weight in standing during game play) and knowledge of results (e.g., game score) Participants will also receive assessment and management by other members of the multidisciplinary team as required. The exercises provided during usual care will be documented by the physiotherapist or physiotherapy assistant/student in an exercise practice sheet. The exercise practice sheet will have space to document details about the type of each exercise, number of repetitions of each exercise, and the active time spent on each exercise. If participants can exercise independently, they will be encouraged to also document this in their exercise practice sheets.
Rehabilitation using digital devices (intervention)
Patient-participants randomized to the intervention group of phase II will receive individualized therapy utilising digital devices to enhance mobility and overall physical activity in addition to their usual care. The selection of digital devices are similar to that used in the AMOUNT trial  and will be the same as intended for the large-scale implementation trial in the future. Digital devices will be selected according to an intervention protocol that matches different exercises on different devices to common mobility limitations, as well as the physiotherapist considering participant impairments (e.g., upper limb weakness), goals and device preferences (See Additional file 2). The digital devices include rehabilitation and recreation virtual reality gaming systems, tablet and smartphone applications, and wearable devices. Each device provides feedback about task performance, enables individualized tailoring and progression of exercise or physical activity, promotes progress towards a functionally relevant goal, and is relatively inexpensive (see Additional file 3).
Physiotherapists responsible for the day-to-day therapy will teach the participants to use the digital devices and develop individualized exercise programs that enable participants to use the digital devices during and/or outside formal therapy sessions according to the participant’s capability, motivation, and goals. The exercises may or may not require the direct assistance of a physiotherapist and/or family members/friends, nursing staff, physiotherapy students or hospital volunteers. The physiotherapists will aim to ensure participants receive an additional 30–60 min of exercise with the digital devices, five or more days per week for 3 weeks. Our previous work has found this amount of additional practice using digital devices to be feasible and enjoyable for patients [9, 17]. Table 1 provides further detail of the intervention using the TIDieR checklist.
The exercises provided using digital devices to the intervention participants will be documented in a second set of exercise practice sheets designed specifically to capture the trial intervention. The exercises will be documented by the physiotherapist or physiotherapy assistant/student. Like the exercise practice sheets for usual care, the exercise practice sheets for the intervention will also have space to document the type and number of repetitions of each exercise and the active time spent on each exercise. If participants are capable of doing exercises independently, they will be encouraged to document them in their exercise practice sheets.
Multi-faceted implementation strategy
All recruited physiotherapists during phase I of the study will receive implementation strategies to support them in providing additional exercises using digital devices into clinical practice. The multi-faceted implementation strategy has been developed using the Capability, Opportunity, Motivation–Behaviour (COM-B) model of behaviour change. This model categorizes barriers and facilitators to implementation. The implementation strategy has also been developed using the Behaviour Change Wheel to identify intervention functions of education, training, enablement, and modeling to address identified barriers . Prior qualitative work done as part of the initial AMOUNT rehabilitation trial identified likely influences on implementation [17, 19]. The implementation strategies have been defined based on the Expert Recommendations for Implementing Change (ERIC) taxonomy  and include (i) identifying and training a physiotherapist on the ward to be a clinical champion, (ii) changing physical structures and equipment (loaning of devices), (iii) providing education through workshops (face-to-face or online), (iv) conducting ongoing training in device use, (v) conducting facilitation (resource provision, clinical reasoning sessions and journal clubs), and (vi) conducting audits and providing feedback of dosage data (using the practice sheets). Table 2 provides further detail of each implementation strategy including the proposed mechanism of change using the COM-B model. A training log will be kept by the clinical champion to monitor delivery of the implementation strategies.
There are a range of outcomes measures that will be collected during phases I and II. They are classified as either.
Feasibility outcome measures of trial processes, resource use, and management systems (see Table 3), or
Implementation outcome measures and determinants of implementation (see Table 3), or
Patient-level clinical trial outcomes (see Table 4).
The feasibility outcome measures capture different aspects of the processes, resource use, and management required to run a large-scale implementation trial. For example, data on the processes include screen failures and reason for potential participants declining to be involved in phase II of the trial. Data on resource use include the number of times the digital devices did not work or needed to be repaired. They also include data on the amount of training the physiotherapist required. Data on management includes the number of digital devices from which dosage data were successfully retrieved, and who collected what data.
The feasibility outcome measures also capture patient- and implementation measures of feasibility during both phase I and phase II. These include measures such as patient safety, treatment fidelity, and the success of the implementation strategies in improving physiotherapists’ capabilities, opportunities, and motivation to use the digital devices.
Where appropriate, feasibility criteria have been specified for each outcome measure to guide any modifications required to the study design, implementation strategies and intervention for the proposed large-scale implementation trial (see Table 3).
The patient-level clinical trial outcomes include all the outcome measures that would be used in the future large-scale implementation trial. They are being collected at baseline and 3 weeks after randomization during phase II. If a patient is discharged before the scheduled 3-week assessment, every attempt will be made to collect all the patient-level measures prior to their discharge. The purposes of collecting these data are to ensure they are all suitable outcome measures for the future large-scale implementation trial and that they are all feasible to collect as well as to estimate the impact of the approach taken to guide future sample size calculations. They include measures of mobility, general health and function, quality of life, and physical activity. In addition, data on falls and adverse events will be collected over the 3-week intervention period (see Table 4).
The primary outcome measures are three of the key feasibility outcome measures that are deemed most important for determining the feasibility of conducting a future large-scale implementation trial. They will be collected during phase II from the study records and are described below.
Data will be collected to reflect how well the physiotherapists document the dosage of exercises provided both as part of usual care (both groups) and as part of the intervention (exercises prescribed with digital devices to the intervention group). The exercise practice sheets will be audited for both completeness and legibility, and the results presented as percentages.
Processes: recruitment rate
This will be measured in terms of number of participants recruited per week (compared to the number screened).
c.Success of implementation: fidelity
Data will be collected to capture the fidelity of using digital devices to prescribe appropriate exercises. That is, to determine whether the participants engaged in additional repetitious practice and if so, to quantify the amount of time spent in additional repetitious practice. This will be determined by measuring the average total active time in minutes per day using digital devices for mobility training. These data will be captured in the intervention group exercise practice sheets (and the control group practice sheet to check if any contamination has occurred) (see Table 3).
Secondary outcomes will also guide the design of full trial processes, sample size calculations and outcome choice (by exploring impacts on patient-level and implementation measures) and ways to support the physiotherapists to deliver the intervention (by exploring determinants on implementation success). All secondary outcomes are listed in Tables 3 and 4. Patient-level outcomes will be assessed by a physiotherapist who has been trained in conducting the outcome measures and is blinded to group allocation.
All physiotherapists working in the rehabilitation ward will be recruited as therapist-participants.
A total of 30 Patient-participants (15 per group) will be recruited. The sample characteristics will be similar to the target population for the future large-scale implementation trial. We reasoned that this sample size would provide sufficient information to deem feasibility .
Data management and analysis
Feasibility trial process measures and implementation outcomes will be collected using Excel spreadsheets and through other study documents (e.g., practice sheets). Patient-level data and implementation determinants questionnaire data will be entered into a study REDCap database with license held by the University of Sydney. Data analysis will be conducted using STATA statistical software. Most feasibility outcome measures will be descriptively presented using frequencies, total numbers, and percentages or proportions. The exception is the patient-level clinical trial outcomes and any feasibility outcome measures collected for both groups of phase II. These data will be analyzed using the intention-to-treat dataset. That is, all patients randomized into the study irrespective of adherence to interventions. Between-group comparisons for each of the continuously scored patient-level and implementation outcome measures will be made using linear models with baseline scores entered as a covariate. Fall rates in both groups will be descriptively presented.
There is growing evidence to indicate that exercise prescribed using digital devices can improve mobility outcomes in people undertaking rehabilitation when provided in addition to usual care . The AMOUNT rehabilitation trial provided further rigorous evidence of effectiveness for a tailored approach to selecting the most appropriate digital device and games to address patients’ mobility limitations while respecting their preferences and goals . However, this intervention was delivered by research physiotherapists employed by study funds. It is yet to be determined if a similar tailored digital intervention can be delivered as an additional dose of exercise by physiotherapists employed in a public hospital with the usual staff available, and whether similar outcomes can be achieved. This feasibility study is the essential ground work recommended to inform the conduct of large-scale implementation trial to answer these question .
It is important to undertake implementation research to speed up the translation of research findings into practice. One estimate suggests that is takes 17 years to implement research into clinical practice . Implementing evidence into clinical practice is challenging and can be influenced by factors such as lack of knowledge, skills and resources, competing demands of the clinician, and priorities of the service . The need to test the feasibility of implementation strategies and understand the influences on implementation on a smaller scale first is crucial for determining potential for broader implementation and scale-up in the future . This feasibility trial will therefore provide vital information about the feasibility of running a large-scale implementation trial of digital devices across rehabilitation services in other publicly funded hospitals.
A potential limitation of this study is the risk of contamination between control and intervention participants as the physiotherapists who receive the implementation strategies may inadvertently incorporate the digital devices into their therapy sessions for the participants in the control group. To address and monitor this risk, we will educate the physiotherapists on the risk of contamination and monitor the exercise practice sheets from both groups to ensure that the digital devices are only being prescribed to participants in the intervention group. A cluster or step-wedged trial design may be preferable for the future implementation trial to address this limitation . Another potential limitation is the feasibility of delivering the education and training implementation strategies required to a team with staff who rotate every 3 months and have 5-week student placements. To address this, a physiotherapist employed in the rehabilitation team will work as the clinical champion on this study and provide ongoing training to new staff and students as required. In addition, all education sessions will be recorded so new staff and students can view them at their convenience. A final potential limitation is the requirement of accurate recording of dosage data for both groups in the study, with dosage of practice identified as the likely primary implementation outcome for the future large-scale implementation trial. To address this, procedures for recording dosage have been created. We will audit and provide feedback to physiotherapists on their documentation and recording of dosage in the exercises practice sheets. In addition, recording of dosage will be evaluated as a primary outcome of this feasibility study.
A strength of this study is that the protocol has been developed considering current best practice guidance in both feasibility and implementation fields [11, 26]. The use of the hybrid design has the advantage that it will test both implementation and intervention in the same trial, which reduces the time required to test both separately and accelerates the implementation process . This trial will provide important information about the feasibility of physiotherapists implementing exercises using digital devices in a busy public hospital setting. It will also provide important information on the suitability of the implementation strategies to train and support clinical physiotherapists to embed digital devices in a rehabilitation setting. This study is the critical first step to the design and future conduct of a large clinical trial to implement exercises using digital devices in rehabilitation.
Availability of data and materials
De-identified patient-level data will be available to other researchers on request to Chief Investigator when the main study results are published.
Activity and MObility UsiNg Technology
Capabilities, Opportunities, Motivation-Behaviour
Australian and New Zealand Clinical Trial Registry
COronaVIrus Disease of 2019
United States of America
Limited Liability Company
CONsolidated Standards Of Reporting Trials
Standard Protocol Items: Recommendations for Interventional Trials
Template for Intervention Description and Replication
Short Physical Performance Battery
Mini-Mental State Examination
Montreal Cognitive Assessment
Research Electronic Data Capture
Expert Recommendations for Implementing Change
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The physiotherapy staff and students, patients, and multidisciplinary team at the General Rehabilitation Unit of Prince of Wales Hospital, Sydney, Australia.
The study received funding from Prince of Wales Hospital Foundation Grant, administered through South Eastern Sydney Local Health District, Sydney, Australia. The funder will have no role in the design of the study, collection, analysis, and interpretation of data and in writing the manuscript.
Ethics approval and consent to participate
The South Eastern Sydney Local Health District Human Research Ethics Committee(s) approved this study 2019/ETH13444. All participants gave written informed consent before data collection began.
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The authors declare that they have no competing interests.
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SPIRIT Checklist. Filled in SPIRIT Checklist for manuscript submission.
Intervention protocol. Document guiding decision of digital device selection for intervention.
Description of digital devices used in the trial for intervention participants. Name of digital devices used and their description. participants.
Therapist-participant questionnaire to explore determinants of implementation success. Questionnaire used to capture the physiotherapists change in capability, opportunity, and motivation to prescribing and delivering rehabilitation using digital devices, developed based upon the COM-B self-evaluation questionnaire.
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Aravind, N., Treacy, D., Chagpar, S. et al. Implementing digital devices to increase mobility training for people receiving inpatient rehabilitation: protocol for a feasibility hybrid type II randomized controlled trial. Pilot Feasibility Stud 9, 69 (2023). https://doi.org/10.1186/s40814-023-01298-y