Negative neurofunctional effects of frequency, depth and environment in recreational scuba diving: the Geneva "memory dive" study.

Details

Serval ID
serval:BIB_E49317489AD6
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Negative neurofunctional effects of frequency, depth and environment in recreational scuba diving: the Geneva "memory dive" study.
Journal
British Journal of Sports Medicine
Author(s)
Slosman D.O., De Ribaupierre S., Chicherio C., Ludwig C., Montandon M.L., Allaoua M., Genton L., Pichard C., Grousset A., Mayer E., Annoni J.M., De Ribaupierre A.
ISSN
0306-3674
Publication state
Published
Issued date
2004
Peer-reviewed
Oui
Volume
38
Number
2
Pages
108-114
Language
english
Notes
Journal Article --- Old month value: Apr
Abstract
OBJECTIVES: To explore relationships between scuba diving activity, brain, and behaviour, and more specifically between global cerebral blood flow (CBF) or cognitive performance and total, annual, or last 6 months' frequencies, for standard dives or dives performed below 40 m, in cold water or warm sea geographical environments. METHODS: A prospective cohort study was used to examine divers from diving clubs around Lac Léman and Geneva University Hospital. The subjects were 215 healthy recreational divers (diving with self-contained underwater breathing apparatus). Main outcome measures were: measurement of global CBF by (133)Xe SPECT (single photon emission computed tomography); psychometric and neuropsychological tests to assess perceptual-motor abilities, spatial discrimination, attentional resources, executive functioning, and memory; evaluation of scuba diving activity by questionnaire focusing on number and maximum depth of dives and geographical site of the diving activity (cold water v warm water); and body composition analyses (BMI). RESULTS: (1) A negative influence of depth of dives on CBF and its combined effect with BMI and age was found. (2) A specific diving environment (more than 80% of dives in lakes) had a negative effect on CBF. (3) Depth and number of dives had a negative influence on cognitive performance (speed, flexibility and inhibition processing in attentional tasks). (4) A negative effect of a specific diving environment on cognitive performance (flexibility and inhibition components) was found. CONCLUSIONS: Scuba diving may have long-term negative neurofunctional effects when performed in extreme conditions, namely cold water, with more than 100 dives per year, and maximal depth below 40 m.
Keywords
Adult, Anthropometry, Brain, Cerebrovascular Circulation, Cognition Disorders, Cold Temperature, Diving, Female, Humans, Male, Middle Aged, Neuropsychological Tests, Prospective Studies, Psychometrics, Tomography, Emission-Computed, Single-Photon
Pubmed
Web of science
Create date
25/01/2008 11:36
Last modification date
20/08/2019 16:08
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