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A predictor of aerobic threshold for patients with heart failure with reduced ejection fraction
[Purpose] The initial cardiopulmonary response to exercise is hypothesized to be a useful predictor of aerobic threshold in patients with heart failure. This study aimed to evaluate the correlation between aerobic threshold and cardiopulmonary responses to exercise onset by comparing patients with h...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Society of Physical Therapy Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6127481/ https://www.ncbi.nlm.nih.gov/pubmed/30214118 http://dx.doi.org/10.1589/jpts.30.1164 |
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author | Yamamoto, Sawako Furukawa, Yorimitsu Fukushima, Seiji Nitta, Osamu |
author_facet | Yamamoto, Sawako Furukawa, Yorimitsu Fukushima, Seiji Nitta, Osamu |
author_sort | Yamamoto, Sawako |
collection | PubMed |
description | [Purpose] The initial cardiopulmonary response to exercise is hypothesized to be a useful predictor of aerobic threshold in patients with heart failure. This study aimed to evaluate the correlation between aerobic threshold and cardiopulmonary responses to exercise onset by comparing patients with heart failure using preserved (≥50%) and reduced (<50%) left ventricular ejection fractions. [Participants and Methods] Twenty-eight males (age, 36–82 years; 12 with preserved and 16 with reduced left ventricular ejection fractions) underwent a progressive submaximal cardiopulmonary exercise test using a cycle ergometer. The aerobic threshold, time constant, and area under the oxygen uptake curve for the first 4 min (V̇O(2)AUC) were determined. [Results] A significant association was observed between aerobic threshold and V̇O(2)AUC in the reduced group but not in the preserved group. No significant correlations were found between time constant and V̇O(2)AUC or between aerobic threshold and time constant in either group. [Conclusion] The results suggest that V̇O(2)AUC measured from exercise onset to an initial 4-min period could provide an easily and safely obtained predictor to assess aerobic capacity in people with reduced left ventricular ejection fractions. |
format | Online Article Text |
id | pubmed-6127481 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Society of Physical Therapy Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-61274812018-09-13 A predictor of aerobic threshold for patients with heart failure with reduced ejection fraction Yamamoto, Sawako Furukawa, Yorimitsu Fukushima, Seiji Nitta, Osamu J Phys Ther Sci Original Article [Purpose] The initial cardiopulmonary response to exercise is hypothesized to be a useful predictor of aerobic threshold in patients with heart failure. This study aimed to evaluate the correlation between aerobic threshold and cardiopulmonary responses to exercise onset by comparing patients with heart failure using preserved (≥50%) and reduced (<50%) left ventricular ejection fractions. [Participants and Methods] Twenty-eight males (age, 36–82 years; 12 with preserved and 16 with reduced left ventricular ejection fractions) underwent a progressive submaximal cardiopulmonary exercise test using a cycle ergometer. The aerobic threshold, time constant, and area under the oxygen uptake curve for the first 4 min (V̇O(2)AUC) were determined. [Results] A significant association was observed between aerobic threshold and V̇O(2)AUC in the reduced group but not in the preserved group. No significant correlations were found between time constant and V̇O(2)AUC or between aerobic threshold and time constant in either group. [Conclusion] The results suggest that V̇O(2)AUC measured from exercise onset to an initial 4-min period could provide an easily and safely obtained predictor to assess aerobic capacity in people with reduced left ventricular ejection fractions. The Society of Physical Therapy Science 2018-09-04 2018-09 /pmc/articles/PMC6127481/ /pubmed/30214118 http://dx.doi.org/10.1589/jpts.30.1164 Text en 2018©by the Society of Physical Therapy Science. Published by IPEC Inc. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/) |
spellingShingle | Original Article Yamamoto, Sawako Furukawa, Yorimitsu Fukushima, Seiji Nitta, Osamu A predictor of aerobic threshold for patients with heart failure with reduced ejection fraction |
title | A predictor of aerobic threshold for patients with heart failure with reduced
ejection fraction |
title_full | A predictor of aerobic threshold for patients with heart failure with reduced
ejection fraction |
title_fullStr | A predictor of aerobic threshold for patients with heart failure with reduced
ejection fraction |
title_full_unstemmed | A predictor of aerobic threshold for patients with heart failure with reduced
ejection fraction |
title_short | A predictor of aerobic threshold for patients with heart failure with reduced
ejection fraction |
title_sort | predictor of aerobic threshold for patients with heart failure with reduced
ejection fraction |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6127481/ https://www.ncbi.nlm.nih.gov/pubmed/30214118 http://dx.doi.org/10.1589/jpts.30.1164 |
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