Speed of spleen volume changes evoked by serial apneas

Diving mammals may enhance dive duration by injecting extra erythrocytes into the circulation by spleen contraction. This mechanism may also be important for apneic duration in humans. We studied the speed and magnitude of spleen volume changes evoked by serial apneas, and the associated changes in...

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Bibliographic Details
Published in:European journal of applied physiology 2005-01, Vol.93 (4), p.447-452
Main Authors: Schagatay, Erika, Haughey, Helena, Reimers, Jenny
Format: Article
Language:English
Subjects:
Adaptation, Physiological
Adult
Apnea - diagnostic imaging
Apnea - pathology
Apnea - physiopathology
Biologi
Biology
Blood Pressure
Diving
Female
Heart Rate
Hemoglobins - analysis
Humans
Idrott
INTERDISCIPLINARY RESEARCH AREAS
Kinetics
Male
NATURAL SCIENCES
NATURVETENSKAP
Organ Size
Organism biology
Organismbiologi
Speed of spleen volume changes evoked by serial apneas
Spleen
Spleen - diagnostic imaging
Spleen - pathology
Spleen - physiopathology
Sports
TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN
Ultrasonography
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Summary:Diving mammals may enhance dive duration by injecting extra erythrocytes into the circulation by spleen contraction. This mechanism may also be important for apneic duration in humans. We studied the speed and magnitude of spleen volume changes evoked by serial apneas, and the associated changes in hematocrit (Hct) and hemoglobin (Hb) concentration, diving response and apneic duration. Three maximal apneas separated by 2 min rest elicited spleen contraction in all ten subjects, by a mean of 49 (27) ml (18%; P
ISSN:1439-6319
1439-6327
1439-6327
DOI:10.1007/s00421-004-1224-0