Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

Cardiorespiratory responses to high intensity skeletal muscle metaboreflex activation in chronic obstructive pulmonary disease

Research output: Contribution to journalJournal articleResearchpeer-review

DOI

  1. Prognostic impact of ventilation-perfusion defects and pulmonary diffusing capacity after single lung transplantation

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Neuro-SPECT: On the development and function of brain emission tomography in the Copenhagen area

    Research output: Contribution to journalReviewpeer-review

  3. Mechanisms in fluid retention - Towards a mutual concept

    Research output: Contribution to journalReviewpeer-review

View graph of relations

BACKGROUND: Augmented skeletal muscle metaboreflex activation may accompany chronic obstructive pulmonary disease (COPD). The maintained metaboreflex control of mean arterial pressure (MAP) that has been reported may reflect limited evaluation using only one moderate bout of static handgrip (HG) and following postexercise ischaemia (PEI).

OBJECTIVE: We tested the hypothesis that cardiovascular and respiratory responses to high-intensity static HG and isolated metaboreflex activation during PEI are augmented in COPD patients.

METHODS: Ten patients with moderate to severe COPD and eight healthy age- and BMI-matched controls performed two-minute static HG at moderate (30% maximal voluntary contraction; MVC) and high (40% MVC) intensity followed by PEI.

RESULTS: Despite similar ratings of perceived exertion, arm muscle mass and strength, COPD patients demonstrated lower MAP responses during both HG intensities compared with controls (time × group interaction, p < .05). Indeed, during high-intensity HG at 40% MVC, peak MAP responses were significantly lower in COPD patients (ΔMAP: COPD 41 ± 9 mmHg vs. controls 56 ± 14 mmHg, p < .05). Notably, no group differences in MAP were observed during PEI (e.g. 40% MVC PEI: ΔMAP COPD 33 ± 9 mmHg vs. controls 33 ± 6 mmHg, p > .05). We found no between-group differences in heart rate, respiratory rate, or estimated minute ventilation during HG or PEI.

CONCLUSION: These results suggest that the pressor response to high-intensity HG is blunted in COPD patients. Moreover, despite inducing a strong cardiovascular and respiratory stimulus, skeletal muscle metaboreflex activation evoked similar responses in COPD patients and controls.

Original languageEnglish
JournalClinical Physiology and Functional Imaging
Volume41
Issue number2
Pages (from-to)146-155
Number of pages10
ISSN1475-0961
DOIs
Publication statusPublished - 2021

Bibliographical note

© 2020 Scandinavian Society of Clinical Physiology and Nuclear Medicine.

    Research areas

  • blood pressure, COPD, exercise intolerance, exercise pressor reflex, hemodynamics, pulmonary rehabilitation

ID: 61231974