Negative neurofunctional effects of frequency, depth and environment in recreational scuba diving: the Geneva "memory dive" study.
Détails
ID Serval
serval:BIB_E49317489AD6
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Negative neurofunctional effects of frequency, depth and environment in recreational scuba diving: the Geneva "memory dive" study.
Périodique
British Journal of Sports Medicine
ISSN
0306-3674
Statut éditorial
Publié
Date de publication
2004
Peer-reviewed
Oui
Volume
38
Numéro
2
Pages
108-114
Langue
anglais
Notes
Journal Article --- Old month value: Apr
Résumé
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.
Mots-clé
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
Création de la notice
25/01/2008 12:36
Dernière modification de la notice
20/08/2019 17:08