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Diving response and arterial oxygen saturation during apnea and exercise in breath-hold divers.

Andersson, Johan LU ; Linér, Mats LU ; Rünow, Elisabeth and Schagatay, Erika K A (2002) In Journal of Applied Physiology 93(3). p.882-886
Abstract
This study addressed the effects of apnea in air and apnea with face immersion in cold water (10 degrees C) on the diving response and arterial oxygen saturation during dynamic exercise. Eight trained breath-hold divers performed steady-state exercise on a cycle ergometer at 100 W. During exercise, each subject performed 30-s apneas in air and 30-s apneas with face immersion. The heart rate and arterial oxygen saturation decreased and blood pressure increased during the apneas. Compared with apneas in air, apneas with face immersion augmented the heart rate reduction from 21 to 33% (P < 0.001) and the blood pressure increase from 34 to 42% (P < 0.05). The reduction in arterial oxygen saturation from eupneic control was 6.8% during... (More)
This study addressed the effects of apnea in air and apnea with face immersion in cold water (10 degrees C) on the diving response and arterial oxygen saturation during dynamic exercise. Eight trained breath-hold divers performed steady-state exercise on a cycle ergometer at 100 W. During exercise, each subject performed 30-s apneas in air and 30-s apneas with face immersion. The heart rate and arterial oxygen saturation decreased and blood pressure increased during the apneas. Compared with apneas in air, apneas with face immersion augmented the heart rate reduction from 21 to 33% (P < 0.001) and the blood pressure increase from 34 to 42% (P < 0.05). The reduction in arterial oxygen saturation from eupneic control was 6.8% during apneas in air and 5.2% during apneas with face immersion (P < 0.05). The results indicate that augmentation of the diving response slows down the depletion of the lung oxygen store, possibly associated with a larger reduction in peripheral venous oxygen stores and increased anaerobiosis. This mechanism delays the fall in alveolar and arterial PO(2) and, thereby, the development of hypoxia in vital organs. Accordingly, we conclude that the human diving response has an oxygen-conserving effect during exercise. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Applied Physiology
volume
93
issue
3
pages
882 - 886
publisher
American Physiological Society
external identifiers
  • pmid:12183481
  • wos:000177573400010
  • scopus:0036707822
ISSN
1522-1601
DOI
10.1152/japplphysiol.00863.2001
language
English
LU publication?
yes
id
9cf94550-2795-4cef-a1ea-dc0d4e0d7ae0 (old id 109994)
alternative location
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12183481&dopt=Abstract
date added to LUP
2007-07-20 15:05:24
date last changed
2017-07-09 03:46:08
@article{9cf94550-2795-4cef-a1ea-dc0d4e0d7ae0,
  abstract     = {This study addressed the effects of apnea in air and apnea with face immersion in cold water (10 degrees C) on the diving response and arterial oxygen saturation during dynamic exercise. Eight trained breath-hold divers performed steady-state exercise on a cycle ergometer at 100 W. During exercise, each subject performed 30-s apneas in air and 30-s apneas with face immersion. The heart rate and arterial oxygen saturation decreased and blood pressure increased during the apneas. Compared with apneas in air, apneas with face immersion augmented the heart rate reduction from 21 to 33% (P &lt; 0.001) and the blood pressure increase from 34 to 42% (P &lt; 0.05). The reduction in arterial oxygen saturation from eupneic control was 6.8% during apneas in air and 5.2% during apneas with face immersion (P &lt; 0.05). The results indicate that augmentation of the diving response slows down the depletion of the lung oxygen store, possibly associated with a larger reduction in peripheral venous oxygen stores and increased anaerobiosis. This mechanism delays the fall in alveolar and arterial PO(2) and, thereby, the development of hypoxia in vital organs. Accordingly, we conclude that the human diving response has an oxygen-conserving effect during exercise.},
  author       = {Andersson, Johan and Linér, Mats and Rünow, Elisabeth and Schagatay, Erika K A},
  issn         = {1522-1601},
  language     = {eng},
  number       = {3},
  pages        = {882--886},
  publisher    = {American Physiological Society},
  series       = {Journal of Applied Physiology},
  title        = {Diving response and arterial oxygen saturation during apnea and exercise in breath-hold divers.},
  url          = {http://dx.doi.org/10.1152/japplphysiol.00863.2001},
  volume       = {93},
  year         = {2002},
}