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Routine exercise-based cardiac rehabilitation does not increase aerobic fitness: A CARE CR study

Nichols, S.; Taylor, C.; Goodman, T.; Page, R.; Kallvikbacka-Bennett, A.; Nation, F.; Clark, A. L.; Birkett, S. T.; Carroll, S.; Ingle, L.

Authors

S. Nichols

C. Taylor

T. Goodman

R. Page

A. Kallvikbacka-Bennett

F. Nation

A. L. Clark

S. T. Birkett



Abstract

© 2020 The Authors Background: Recent evidence suggests that routine exercise-based cardiac rehabilitation (CR) may not lead to a substantial increase in estimated peak oxygen uptake (V̇O2peak). This could reduce the potential benefits of CR and explain why CR no longer improves patient survival in recent studies. We aimed to determine whether routine exercise-based CR increases V̇O2peak using gold-standard maximal cardiopulmonary exercise testing (CPET), and to quantify the exercise training stimulus which might be insufficient in patients undertaking CR. Methods: We studied the effects of a routine, twice weekly, exercise-based CR programme for eight weeks (intervention group) compared with abstention from supervised exercise training (control group) in patients with coronary heart disease. The primary outcome was V̇O2peak measured using CPET. We also measured changes in body composition using dual X-ray absorptiometry, carotid intima-media thickness, hs-CRP and N-terminal pro B-type natriuretic peptide at baseline, 10 weeks and 12 months. We also calculated the Calibre 5-year all-cause mortality risk score. Results: Seventy patients (age 63.1 SD 10.0 years; BMI 29.2 SD 4.0 kg·m−2; 86% male) were recruited (n = 48 intervention; n = 22 controls). The mean aerobic exercise training duration was 23 min per training session, and the mean exercise training intensity was 45.9% of heart rate reserve. V̇O2peak was 23·3 ml·kg-1·min−1 at baseline, and there were no changes in V̇O2peak between groups at any time point. The intervention had no effect on any of the secondary endpoints. Conclusion: Routine CR does not lead to an increase in V̇O2peak and is unlikely to improve long-term physiological outcomes.

Citation

Nichols, S., Taylor, C., Goodman, T., Page, R., Kallvikbacka-Bennett, A., Nation, F., …Ingle, L. (2020). Routine exercise-based cardiac rehabilitation does not increase aerobic fitness: A CARE CR study. International journal of cardiology, 305, 25-34. https://doi.org/10.1016/j.ijcard.2020.01.044

Journal Article Type Article
Acceptance Date Jan 20, 2020
Online Publication Date Jan 22, 2020
Publication Date Apr 15, 2020
Deposit Date Feb 1, 2020
Publicly Available Date Feb 4, 2020
Journal International Journal of Cardiology
Print ISSN 0167-5273
Electronic ISSN 1874-1754
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 305
Pages 25-34
DOI https://doi.org/10.1016/j.ijcard.2020.01.044
Keywords Cardiology and Cardiovascular Medicine; Coronary artery disease; Cardiac rehabilitation; Cardiovascular rehabilitation; Cardiorespiratory fitness; Exercise test; Exercise training
Public URL https://hull-repository.worktribe.com/output/3404282

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Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/





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