Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Yamamoto, Sawako, Furukawa, Yorimitsu, Fukushima, Seiji, Nitta, Osamu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Society of Physical Therapy Science 2018
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
_version_ 1783353484904497152
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
work_keys_str_mv AT yamamotosawako apredictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT furukawayorimitsu apredictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT fukushimaseiji apredictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT nittaosamu apredictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT yamamotosawako predictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT furukawayorimitsu predictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT fukushimaseiji predictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction
AT nittaosamu predictorofaerobicthresholdforpatientswithheartfailurewithreducedejectionfraction