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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/109994
- author
- Andersson, Johan
LU
; Linér, Mats
LU
; Rünow, Elisabeth
and Schagatay, Erika K A
- organization
- publishing date
- 2002
- 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
- 2016-04-01 12:28:40
- date last changed
- 2022-02-18 23:05:45
@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 < 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.}},
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}},
doi = {{10.1152/japplphysiol.00863.2001}},
volume = {{93}},
year = {{2002}},
}