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Cited by 921Cardiovascular and exercise physiologyHeart Failure Treatment and ManagementCardiovascular Function and Risk Factors

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Effect of Caloric Restriction or Aerobic Exercise Training on Peak Oxygen Consumption and Quality of Life in Obese Older Patients With Heart Failure With Preserved Ejection Fraction: A Randomized Clinical Trial

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Kitzman, Dalane W., Brubaker, Peter, Morgan, Timothy, Haykowsky, Mark, Hundley, Gregory, Kraus, William E., Eggebeen, Joel, Nicklas, Barbara J.·2016·JAMA
DOI 10.1001/jama.2015.17346PMC PMC4787295
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Abstract

IMPORTANCE: More than 80% of patients with heart failure with preserved ejection fraction (HFPEF), the most common form of heart failure among older persons, are overweight or obese. Exercise intolerance is the primary symptom of chronic HFPEF and a major determinant of reduced quality of life (QOL). OBJECTIVE: To determine whether caloric restriction (diet) or aerobic exercise training (exercise) improves exercise capacity and QOL in obese older patients with HFPEF. DESIGN, SETTING, AND PARTICIPANTS: Randomized, attention-controlled, 2 × 2 factorial trial conducted from February 2009 through November 2014 in an urban academic medical center. Of 577 initially screened participants, 100 older obese participants (mean [SD]: age, 67 years [5]; body mass index, 39.3 [5.6]) with chronic, stable HFPEF were enrolled (366 excluded by inclusion and exclusion criteria, 31 for other reasons, and 80 declined participation). INTERVENTIONS: Twenty weeks of diet, exercise, or both; attention control consisted of telephone calls every 2 weeks. MAIN OUTCOMES AND MEASURES: Exercise capacity measured as peak oxygen consumption (V̇O2, mL/kg/min; co-primary outcome) and QOL measured by the Minnesota Living with Heart Failure (MLHF) Questionnaire (score range: 0-105, higher scores indicate worse heart failure-related QOL; co-primary outcome). RESULTS: Of the 100 enrolled participants, 26 participants were randomized to exercise; 24 to diet; 25 to exercise + diet; 25 to control. Of these, 92 participants completed the trial. Exercise attendance was 84% (SD, 14%) and diet adherence was 99% (SD, 1%). By main effects analysis, peak V̇O2 was increased significantly by both interventions: exercise, 1.2 mL/kg body mass/min (95% CI, 0.7 to 1.7), P < .001; diet, 1.3 mL/kg body mass/min (95% CI, 0.8 to 1.8), P < .001. The combination of exercise + diet was additive (complementary) for peak V̇O2 (joint effect, 2.5 mL/kg/min). There was no statistically significant change in MLHF total score with exercise and with diet (main effect: exercise, -1 unit [95% CI, -8 to 5], P = .70; diet, -6 units [95% CI, -12 to 1], P = .08). The change in peak V̇O2 was positively correlated with the change in percent lean body mass (r = 0.32; P = .003) and the change in thigh muscle:intermuscular fat ratio (r = 0.27; P = .02). There were no study-related serious adverse events. Body weight decreased by 7% (7 kg [SD, 1]) in the diet group, 3% (4 kg [SD, 1]) in the exercise group, 10% (11 kg [SD, 1] in the exercise + diet group, and 1% (1 kg [SD, 1]) in the control group. CONCLUSIONS AND RELEVANCE: Among obese older patients with clinically stable HFPEF, caloric restriction or aerobic exercise training increased peak V̇O2, and the effects may be additive. Neither intervention had a significant effect on quality of life as measured by the MLHF Questionnaire. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00959660.

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Authors
Kitzman, D. W., Brubaker, P., Morgan, T., Haykowsky, M., Hundley, G., Kraus, W. E., Eggebeen, J., & Nicklas, B. J.
Affiliations
  • Wake Forest University Health Sciences (US)
  • Wake Forest University (US)
  • The University of Texas at Arlington (US)
  • Cardiology Section, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
  • Duke University (US)
  • Emory University (US)
Corresponding author
Kitzman, Dalane W.
ORCID
Venue
JAMA
Publisher
American Medical Association (AMA)
Published
2016-01-05
Volume
315
Issue
1
Pages
36
ISSN
  • 0002-9955 (ISSN-L)
  • 0098-7484
DOI
10.1001/jama.2015.17346
PMC
PMC4787295
OpenAlex
W2231944090
Cited by
921
References
44
Citations by year
2026: 94 · 2025: 117 · 2024: 121 · 2023: 89 · 2022: 92 · 2021: 92 · 2020: 90 · 2019: 69 · 2018: 60 · 2017: 66 · 2016: 29
FWCI
153.56
Type
journal article
Language
en
Open access
Locations
  • JAMA (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of Texas at Arlington
  • National Institutes of Health (UL1TR001420, R01AG18915)
  • Wake Forest School of Medicine (P30AG021332)
  • National Institute on Aging (R01AG020583, R01 AG18915, R01AG018915, R37AG018915, P30AG021332)
  • National Heart, Lung, and Blood Institute (R01HL093713)
  • National Center for Research Resources (M01RR007122)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Failure Treatment and Management
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
Keywords
heart failure with preserved ejection fraction, obesity, older adults, caloric restriction, aerobic exercise training, peak oxygen uptake, exercise capacity, quality of life, diet and exercise combination, exercise intolerance, heart failure
MeSH terms
Aged, Body Composition, Combined Modality Therapy, Female, Heart Failure, Humans, Male, Middle Aged, Obesity, Oxygen Consumption, Patient Compliance, Quality of Life, Surveys and Questionnaires, Stroke Volume, Weight Loss, Exercise, Body Mass Index, Single-Blind Method, Exercise Tolerance, Caloric Restriction, Physical Conditioning, Human

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