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Cited by 249

The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.

Skeletal Muscle Composition and Its Relation to Exercise Intolerance in Older Patients With Heart Failure and Preserved Ejection Fraction

Open access
Haykowsky, Mark J., Kouba, Erik J., Brubaker, Peter H., Nicklas, Barbara J., Eggebeen, Joel, Kitzman, Dalane W.·2014·The American Journal of Cardiology

Abstract

Exercise intolerance is the primary chronic symptom in heart failure with preserved ejection fraction (HFpEF), the most common form of HF in older patients, however its pathophysiology is not well understood. Recent data suggest that peripheral factors, such as skeletal muscle dysfunction, may be important contributors. Therefore, 38 participants, 23 HFpEF patients (69±7 years) and 15 age-matched healthy controls (HC), underwent magnetic resonance imaging and cardiopulmonary exercise testing to assess for: skeletal muscle (SM), intermuscular fat (IMF), subcutaneous fat (SCF), total thigh, and thigh compartment areas (TC) and peak exercise oxygen consumption (peak VO2). There were no significant inter-group differences in total thigh area, TC, SCF, or SM. However, in HFpEF versus HC, IMF area (35.6±11.5 vs. 22.3±7.6 cm2, p=0.01), percent IMF/TC (26±5 vs. 20±5%, p=0.005), and the ratio of IMF/SM (0.38±0.10 vs. 0.28±0.09, p=0.007) were significantly increased, while percent SM/TC was significantly reduced (70±5 vs. 75 ±5, p=0.009). In multivariate analyses, IMF area (partial r= -0.51, p=0.002) and IMF/SM ratio (partial r= -0.45, p=0.006) were independent predictors of peak VO2 while SM area was not (partial r=-0.14, p=0.43). Thus, older HFpEF patients have greater thigh IMF and IMF/SM ratio compared to HC, and these are significantly related to their severely reduced peak VO2. These data suggest that abnormalities in skeletal muscle composition may contribute to the severely reduced exercise capacity in older HFpEF patients. This implicates potential targets for novel therapeutic strategies in this common, debilitating disorder of older persons.

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Metadata

Authors
Haykowsky, M. J., Kouba, E. J., Brubaker, P. H., Nicklas, B. J., Eggebeen, J., & Kitzman, D. W.
Venue
The American Journal of Cardiology
Publisher
Elsevier BV
Published
2014-04
Volume
113
Issue
7
Pages
1211-1216
ISSN
0002-9149 (ISSN-L)
OpenAlex
W1970508540
Cited by
249
References
11
FWCI
38.55
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Skeletal Muscle Composition and Its Relation to Exercise Intolerance in Older Patients With Heart Failure and Preserved Ejection Fraction. https://app.cochat.ai/papers/10.1016/j.amjcard.2013.12.031
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Haykowsky, M. J., Kouba, E. J., Brubaker, P. H., Nicklas, B. J., Eggebeen, J., & Kitzman, D. W. (2014). Skeletal Muscle Composition and Its Relation to Exercise Intolerance in Older Patients With Heart Failure and Preserved Ejection Fraction. The American Journal of Cardiology. https://doi.org/10.1016/j.amjcard.2013.12.031

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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