Evidence map›Paper›PMID 34156335›Full record

Trial reportHealth technology assessment (Winchester, England)2021

Exercise programme to improve quality of life for patients with end-stage kidney disease receiving haemodialysis: the PEDAL RCT.

Sharlene A Greenwood, Pelagia Koufaki, Jamie H Macdonald, Catherine Bulley, Sunil Bhandari, James O Burton, Indranil Dasgupta, Kenneth Farrington, Ian Ford, Philip A Kalra and 12 more

Open access · diamondAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Health technology assessment (Winchester, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 7 pooled it
3.7field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 7 syntheses or guidelines pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Interventions for fatigue in people with kidney failure requiring dialysis.The Cochrane database of systematic reviews · 2023
    Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Trial
  9. Blood Flow Restriction Training in Hemodialysis Patients: Clinical Benefits, Challenges, and Future Perspectives.Hemodialysis international. International Symposium on Home Hemodialysis · 2026
    Review
  10. Article
  11. Review
  12. Article
  13. Nephrologists' Insights on Exercise in Renal Health.Kidney & blood pressure research · 2025
    Article
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

22 authors at 16 institutions in 2 countries.

Sharlene A GreenwoodKing's College Hospital NHS Foundation Trust, London, UK.ORCID 0000-0001-9485-4645
Pelagia KoufakiSchool of Health Sciences, Queen Margaret University, Edinburgh, UK.ORCID 0000-0002-1406-3729
Jamie H MacdonaldSchool of Sport, Health and Exercise Sciences, Bangor University, Bangor, UK.ORCID 0000-0002-2375-146X
Catherine BulleySchool of Health Sciences, Queen Margaret University, Edinburgh, UK.ORCID 0000-0001-8338-5388
Sunil BhandariHull University Teaching Hospitals NHS Trust, Hull, UK.ORCID 0000-0002-0996-9622
James O BurtonDepartment of Cardiovascular Sciences, University of Leicester, Leicester, UK.ORCID 0000-0003-1176-7592
Indranil DasguptaUniversity Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.ORCID 0000-0002-7448-2677
Kenneth FarringtonLister Hospital, Stevenage, UK.ORCID 0000-0001-8862-6056
Ian FordRobertson Centre for Biostatistics, University of Glasgow, Glasgow, UK.ORCID 0000-0001-5927-1823
Philip A KalraSalford Royal Hospital, Salford, UK.ORCID 0000-0001-7652-1572
Mick KumwendaGlan Clwyd Hospital, Bodelwyddan, UK.ORCID 0000-0001-8343-1129
Iain C MacdougallKing's College Hospital NHS Foundation Trust, London, UK.ORCID 0000-0001-9098-8611
Claudia-Martina MessowRobertson Centre for Biostatistics, University of Glasgow, Glasgow, UK.ORCID 0000-0003-0082-9946
Sandip MitraManchester University Hospitals, Manchester, UK.ORCID 0000-0003-0389-636X
Chante ReidKing's College Hospital NHS Foundation Trust, London, UK.ORCID 0000-0003-2530-6025
Alice C SmithDepartment of Health Sciences, University of Leicester, Leicester, UK.ORCID 0000-0002-9234-9060
Maarten W TaalSchool of Medicine, University of Nottingham, Nottingham, UK.ORCID 0000-0002-9065-212X
Peter C ThomsonQueen Elizabeth University Hospital, Glasgow, UK.ORCID 0000-0003-4761-2648
David C WheelerSchool of Medicine, University College London, London, UK.ORCID 0000-0003-0745-3478
Claire WhiteKing's College Hospital NHS Foundation Trust, London, UK.ORCID 0000-0002-8908-8648
Magdi YaqoobRoyal London Hospital, London, UK.ORCID 0000-0002-9904-127X
Thomas H MercerSchool of Health Sciences, Queen Margaret University, Edinburgh, UK.ORCID 0000-0002-5078-4769
Queen Margaret University · GBKing's College Hospital NHS Foundation Trust · GBKing's College London · GBUniversity of Glasgow · GBUniversity of Leicester · GBBangor University · GBGlan Clwyd Hospital · GBLister Hospital · GBQueen Elizabeth University Hospital · GBRoyal London Hospital · GBSalford Royal Hospital · GBThe George Institute for Global Health · AUUniversity Hospitals Birmingham NHS Foundation Trust · GBUniversity of Hull · GBUniversity of Manchester · GBUniversity of Nottingham · GB

Funding

Department of Health 12/23/09
6 · The paper itself

Abstract

backgroundWhether or not clinically implementable exercise interventions in haemodialysis patients improve quality of life remains unknown.

objectivesThe PEDAL (PrEscription of intraDialytic exercise to improve quAlity of Life in patients with chronic kidney disease) trial evaluated the clinical effectiveness and cost-effectiveness of a 6-month intradialytic exercise programme on quality of life compared with usual care for haemodialysis patients.

designWe conducted a prospective, multicentre randomised controlled trial of haemodialysis patients from five haemodialysis centres in the UK and randomly assigned them (1 : 1) using a web-based system to (1) intradialytic exercise training plus usual-care maintenance haemodialysis or (2) usual-care maintenance haemodialysis.

settingThe setting was five dialysis units across the UK from 2015 to 2019.

participantsThe participants were adult patients with end-stage kidney disease who had been receiving haemodialysis therapy for > 1 year.

interventionsParticipants were randomised to receive usual-care maintenance haemodialysis or usual-care maintenance haemodialysis plus intradialytic exercise training.

main outcome measuresThe primary outcome of the study was change in Kidney Disease Quality of Life Short Form, version 1.3, physical component summary score (from baseline to 6 months). Cost-effectiveness was determined using health economic analysis and the EuroQol-5 Dimensions, five-level version. Additional secondary outcomes included quality of life (Kidney Disease Quality of Life Short Form, version 1.3, generic multi-item and burden of kidney disease scales), functional capacity (sit-to-stand 60 and 10-metre Timed Up and Go tests), physiological measures (peak oxygen uptake and arterial stiffness), habitual physical activity levels (measured by the International Physical Activity Questionnaire and Duke Activity Status Index), fear of falling (measured by the Tinetti Falls Efficacy Scale), anthropometric measures (body mass index and waist circumference), clinical measures (including medication use, resting blood pressure, routine biochemistry, hospitalisations) and harms associated with intervention. A nested qualitative study was conducted.

resultsWe randomised 379 participants; 335 patients completed baseline assessments and 243 patients (intervention, LIMITATIONS: Participants could not be blinded to the intervention; however, outcome assessors were blinded to group allocation.

conclusionsOn trial completion the primary outcome (Kidney Disease Quality of Life Short Form, version 1.3, physical component summary score) was not statistically improved compared with usual care. The findings suggest that implementation of an intradialytic cycling programme is not an effective intervention to enhance health-related quality of life, as delivered to this cohort of deconditioned patients receiving haemodialysis. FUTURE WORK: The benefits of longer interventions, including progressive resistance training, should be confirmed even if extradialytic delivery is required. Future studies also need to evaluate whether or not there are subgroups of patients who may benefit from this type of intervention, and whether or not there is scope to optimise the exercise intervention to improve compliance and clinical effectiveness.

trial registrationCurrent Controlled Trials ISRCTN83508514.

fundingThis project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in

Indexed as

Kidney Failure, ChronicQuality of LifeAccidental FallsCost-Benefit AnalysisExerciseExercise TherapyFearHumansProspective StudiesRenal DialysisCHRONIC KIDNEY DISEASEPHYSICAL ACTIVITYPHYSICAL FUNCTIONREHABILITATION

Identifiers

PMID34156335
PMCPMC8256322
OpenAlexW3176407605

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.