Physiological effects of mixed-gas deep sea dives using a closed-circuit rebreather: a field pilot study.
Closed circuit rebreather
Heart rate variability
Scuba
Spirometry
Journal
European journal of applied physiology
ISSN: 1439-6327
Titre abrégé: Eur J Appl Physiol
Pays: Germany
ID NLM: 100954790
Informations de publication
Date de publication:
Dec 2021
Dec 2021
Historique:
received:
05
04
2021
accepted:
19
08
2021
pubmed:
27
8
2021
medline:
16
2
2022
entrez:
26
8
2021
Statut:
ppublish
Résumé
Deep diving using mixed gas with closed-circuit rebreathers (CCRs) is increasingly common. However, data regarding the effects of these dives are still scarce. This preliminary field study aimed at evaluating the acute effects of deep (90-120 msw) mixed-gas CCR bounce dives on lung function in relation with other physiological parameters. Seven divers performed a total of sixteen open-sea CCR dives breathing gas mixture of helium, nitrogen and oxygen (trimix) within four days at 2 depths (90 and 120 msw). Spirometric parameters, SpO The median [1st-3rd quartile] of the forced vital capacity was lower (84% [76-93] vs 91% [74-107] of predicted values; p = 0.029), whereas FEV1/FVC was higher (98% [95-99] vs 95% [89-99]; p = 0.019) after than before the dives. The other spirometry values and SpO The present observation represents the first original data regarding the effects of deep repeated CCR dives. The body mass loss and decrease of FVC after bounce dives at depth of about 100 msw may possibly impose an important physiological stress for the divers.
Identifiants
pubmed: 34435274
doi: 10.1007/s00421-021-04798-y
pii: 10.1007/s00421-021-04798-y
doi:
Substances chimiques
Helium
206GF3GB41
trimix
89210-11-7
Nitrogen
N762921K75
Oxygen
S88TT14065
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
3323-3331Subventions
Organisme : Tek Diving SAS.
ID : JGP0RV025
Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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