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  • Using SUpported Motivational InTerviewing (SUMIT) to increase physical activity for people with knee osteoarthritis: a pilot, feasibility randomised controlled trial

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Rehabilitation medicine
Original research
Using SUpported Motivational InTerviewing (SUMIT) to increase physical activity for people with knee osteoarthritis: a pilot, feasibility randomised controlled trial
  1. Emily Catherine Bell1,2,3,
  2. Paul O'Halloran4,
  3. Jason A Wallis1,2,5,
  4. Kay M Crossley1,
  5. Alison J Gibbs1,
  6. Annemarie Lee6,
  7. Sophie Jennings2,
  8. Christian J Barton1,3
  1. 1La Trobe Sport & Exercise Medicine Research Centre (LASEM), School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, Victoria, Australia
  2. 2Department of Physiotherapy, Cabrini Health, Malvern, Victoria, Australia
  3. 3Physiotherapy, School of Allied Health, Human Service and Sport, La Trobe University, Bundoora, Victoria, Australia
  4. 4La Trobe University School of Psychology and Public Health, Bundoora, Victoria, Australia
  5. 5School of Public Health & Preventive Medicine, Monash University, Melbourne, Victoria, Australia
  6. 6Department of Physiotherapy, Monash University, Frankston, Victoria, Australia
  1. Correspondence to Dr Emily Catherine Bell; E.Bell{at}latrobe.edu.au

Abstract

Objective The objective of this study was to determine the feasibility and effectiveness of using SUpported Motivational InTerviewing (SUMIT) to increase physical activity in people with knee osteoarthritis (KOA).

Design Randomised controlled trial.

Setting We recruited people who had completed Good Life with osteoArthritis Denmark (GLA:D) from private, public and community settings in Victoria, Australia.

Interventions Participants were randomised to receive SUMIT or usual care. SUMIT comprised five motivational interviewing sessions targeting physical activity over 10 weeks, and access to a multimedia web-based platform.

Participants Thirty-two participants were recruited (17 SUMIT, 15 control) including 22 females (69%).

Outcome measures Feasibility outcomes included recruitment rate, adherence to motivational interviewing, ActivPAL wear and drop-out rate. Effect sizes (ESs) were calculated for daily steps, stepping time, time with cadence >100 steps per minute, time in bouts >1 min; 6 min walk distance, Knee Osteoarthritis Outcome Score (KOOS) subscales (pain, symptoms, function, sport and recreation, and quality of life (QoL)), Euroqual, systolic blood pressure, body mass index, waist circumference, 30 s chair stand test and walking speed during 40 m walk test.

Results All feasibility criteria were achieved, with 32/63 eligible participants recruited over seven months; with all participants adhering to all motivational interviewing calls and achieving sufficient ActivPAL wear time, and only two drop-outs (6%).

12/15 outcome measures showed at least a small effect (ES>0.2) favouring the SUMIT group, including daily time with cadence >100 steps per minute (ES=0.43). Two outcomes, walking speed (ES= 0.97) and KOOS QoL (ES=0.81), showed a large effect (ES>0.8).

Conclusion SUMIT is feasible in people with knee osteoarthritis. Potential benefits included more time spent walking at moderate intensity, faster walking speeds and better QoL.

Trial registration number ACTRN12621000267853.

  • knee
  • physical therapy modalities
  • rehabilitation medicine

Data availability statement

Data are available on reasonable request.

http://creativecommons.org/licenses/by-nc/4.0/

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

https://doi.org/10.1136/bmjopen-2023-075014

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    Data availability statement

    Data are available on reasonable request.

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    Footnotes

    • Twitter @millybelly4

    • Correction notice This article has been corrected since it was first published. Affiliation has been updated for 'Emily Catherine Bell' and 'Christian J Barton'.

    • Contributors ECB and CJB took responsibility for the integrity of the data and correctness of the data analysis, including being joint responsible for the overall content as the guarantors. ECB is a PhD candidate and this trial is contributing to her doctoral dissertation. Concept and Design: ECB, CJB, PO'H and JAW; Acquisition of the data: ECB, research assistants; analysis or interpretation of the data: all; Drafting of the manuscript: ECB, PO'H, JAW, CJB and KMC; Critical revision of the manuscript: all; Obtained funding: All.

    • Funding This study is supported by a La Trobe University Postgraduate Stipend (ECB). This trial was supported by a Cabrini Foundation Research Grant to the value of AUD$29 999.65 and Arthritis Australia to the value of AUD$10 000. The remaining funds required were supported by in-kind funds from La Trobe University.

    • Competing interests None declared.

    • Patient and public involvement Patients and/or the public were involved in the design, or conduct, or reporting, or dissemination plans of this research. Refer to the Methods section for further details.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    • Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.