Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Exercise effects on central venous nitrogen tensions after simulated non-decompression dives

C M Muth1, C M Staschen, V Warninghoff

  • 1Zentrum für Anaesthesiologie, Heinrich-Heine Universität, Düsseldorf, Germany.

Undersea & Hyperbaric Medicine : Journal of the Undersea and Hyperbaric Medical Society, Inc
|September 1, 1994
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Influence of hyperoxia on diastolic myocardial and arterial endothelial function.

Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc·2017
Same author

Evaluation of [Formula: see text] enrichment values obtained with an oral breath test under conditions of impaired gastric functioning.

Journal of breath research·2017
Same author

The crucial role of neutrophil granulocytes in bone fracture healing.

European cells & materials·2016
Same author

[The Ulm trauma track : Trauma care and research as focal points for medical students].

Der Unfallchirurg·2015
Same author

[Emergency checklist drowning].

MMW Fortschritte der Medizin·2014
Same author

Dose-time dependency of hyperbaric hyperoxia-induced DNA strand breaks in human immune cells visualized with the comet assay.

Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc·2014

Exercise after simulated dives significantly accelerates nitrogen elimination. Post-dive exertion helps reduce nitrogen levels faster than rest, aiding in faster recovery from diving.

Area of Science:

  • Physiology
  • Diving Medicine
  • Exercise Science

Background:

  • Simulated non-decompression dives involve nitrogen (N2) absorption.
  • Central venous N2 tensions (PVN2) reflect dissolved nitrogen in the body.
  • Understanding nitrogen elimination post-dive is crucial for diver safety.

Purpose of the Study:

  • To investigate the effect of post-ascent exercise on nitrogen elimination patterns.
  • To compare nitrogen washout with rest versus exercise after simulated dives.

Main Methods:

  • Five subjects underwent simulated air dives at 3 bar for 20 minutes.
  • Nitrogen tensions in central venous blood (PVN2) were measured using a manometric Van Slyke apparatus.
  • Nitrogen elimination was calculated using the Fick principle, comparing rest and post-ascent exercise conditions.

Related Experiment Videos

Main Results:

  • Immediately post-ascent, PVN2 was high (approx. 940-950 mmHg) in both rest and exercise conditions.
  • During rest, PVN2 decreased slowly, remaining elevated 90 minutes post-dive.
  • Exercise post-ascent significantly increased nitrogen elimination (970 ml vs. 311 ml), returning PVN2 to pre-dive levels within 60 minutes.

Conclusions:

  • Exercise following shallow, non-decompression dives can accelerate nitrogen elimination.
  • This accelerated elimination likely occurs when extensive supersaturation and bubble formation are avoided.
  • Post-dive exercise may be a beneficial strategy for enhancing recovery and reducing decompression risks.