Skip to main content

Main menu

  • Home
  • Current issue
  • ERJ Early View
  • Past issues
  • ERS Guidelines
  • Authors/reviewers
    • Instructions for authors
    • Submit a manuscript
    • Open access
    • COVID-19 submission information
    • Peer reviewer login
  • Alerts
  • Subscriptions
  • ERS Publications
    • European Respiratory Journal
    • ERJ Open Research
    • European Respiratory Review
    • Breathe
    • ERS Books
    • ERS publications home

User menu

  • Log in
  • Subscribe
  • Contact Us
  • My Cart

Search

  • Advanced search
  • ERS Publications
    • European Respiratory Journal
    • ERJ Open Research
    • European Respiratory Review
    • Breathe
    • ERS Books
    • ERS publications home

Login

European Respiratory Society

Advanced Search

  • Home
  • Current issue
  • ERJ Early View
  • Past issues
  • ERS Guidelines
  • Authors/reviewers
    • Instructions for authors
    • Submit a manuscript
    • Open access
    • COVID-19 submission information
    • Peer reviewer login
  • Alerts
  • Subscriptions

Diaphragm fatigue in self-paced running exercise of different durations

Thomas U. Wüthrich, Elisabeth C. Eberle, Christina M. Spengler
European Respiratory Journal 2011 38: 4878; DOI:
Thomas U. Wüthrich
1Exercise Physiology, Human Movement Science, ETH Zurich, Zurich, Switzerland
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Elisabeth C. Eberle
1Exercise Physiology, Human Movement Science, ETH Zurich, Zurich, Switzerland
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Christina M. Spengler
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Info & Metrics
Loading

Abstract

Introduction: Diaphragm fatigue (DF) was shown to develop during high intensity constant-load exercise (CLE) above 85% of maximal oxygen consumption (VO2max). CLE does, however, not appropriately reflect field trial conditions where exercise intensity is regulated by complex feedforward and feedback mechanisms, possibly aiming to reduce/prevent DF. Therefore, the development of DF was assessed in 11 well-trained athletes (age=31±4 yrs, VO2max=66.7±4.6 mlmin-1kg-1) in 15 and 30min running time trials (TT). We hypothesized that DF would be larger in the 30TT where more time is spent above 85%VO2max.

Methods: Before and 4min after completion of the TTs, esophageal and gastric pressures were assessed to calculate transdiaphragmatic twitch pressures (Pdi,tw) during cervical magnetic stimulation.

Results: All subjects developed DF (Pdi,tw reduction, ΔPdi,tw ≥10%) in the 15TT and 7/11 subjects in the 30TT. On average, ΔPdi,tw was 23.0±6.5 (15TT) and 18.5±12.1% (30TT; p=0.13). Mean exercise intensities were 89.4±3.5 (15TT) and 86.0±3.7%VO2max (30TT; p=0.07) with similar mean durations above 85%VO2max (11.9±2.0min; range: 7-14min; 15TT) and (16.2±9.7min; 1-28min; 30TT; p=0.19). The individual between-TT difference in ΔPdi,tw did not correlate with the difference in time spent above 85%VO2max (R2=0.20) but correlated with the difference in the average exercise intensity above 85%VO2max (R2=0.49; p=0.02).

Conclusion: In TT-conditions, the degree of DF is not related to the duration spent above 85%VO2max but it is related to the exercise intensity when exercising above the 85%VO2max-threshold.

  • © 2011 ERS
Previous
Back to top
Vol 38 Issue Suppl 55 Table of Contents
  • Table of Contents
  • Index by author
Email

Thank you for your interest in spreading the word on European Respiratory Society .

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Diaphragm fatigue in self-paced running exercise of different durations
(Your Name) has sent you a message from European Respiratory Society
(Your Name) thought you would like to see the European Respiratory Society web site.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
Diaphragm fatigue in self-paced running exercise of different durations
Thomas U. Wüthrich, Elisabeth C. Eberle, Christina M. Spengler
European Respiratory Journal Sep 2011, 38 (Suppl 55) 4878;

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero

Share
Diaphragm fatigue in self-paced running exercise of different durations
Thomas U. Wüthrich, Elisabeth C. Eberle, Christina M. Spengler
European Respiratory Journal Sep 2011, 38 (Suppl 55) 4878;
del.icio.us logo Digg logo Reddit logo Technorati logo Twitter logo CiteULike logo Connotea logo Facebook logo Google logo Mendeley logo

Jump To

  • Article
  • Info & Metrics
  • Tweet Widget
  • Facebook Like
  • Google Plus One

More in this TOC Section

  • Does venous blood gas analysis provide accurate estimates of hemoglobin oxygen affinity?
  • Chest wall kinematics in patients with osteogenesis imperfecta (OI)
Show more 504. Innovative methods in clinical physiology

Related Articles

Navigate

  • Home
  • Current issue
  • Archive

About the ERJ

  • Journal information
  • Editorial board
  • Press
  • Permissions and reprints
  • Advertising

The European Respiratory Society

  • Society home
  • myERS
  • Privacy policy
  • Accessibility

ERS publications

  • European Respiratory Journal
  • ERJ Open Research
  • European Respiratory Review
  • Breathe
  • ERS books online
  • ERS Bookshop

Help

  • Feedback

For authors

  • Instructions for authors
  • Publication ethics and malpractice
  • Submit a manuscript

For readers

  • Alerts
  • Subjects
  • Podcasts
  • RSS

Subscriptions

  • Accessing the ERS publications

Contact us

European Respiratory Society
442 Glossop Road
Sheffield S10 2PX
United Kingdom
Tel: +44 114 2672860
Email: journals@ersnet.org

ISSN

Print ISSN:  0903-1936
Online ISSN: 1399-3003

Copyright © 2023 by the European Respiratory Society