Increase of Hemoglobin Concentration After Maximal Apneas in Divers, Skiers, and Untrained Humans

Human splenic contraction occurs both during apnea and maximal exercise, increasing the circulating erythrocyte volume. We investigated the hematological responses to 3 maximal apneas performed by elite apneic divers, elite cross-country skiers, and untrained subjects. Post-apnea hemoglobin concentr...

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Bibliographic Details
Published in:Canadian journal of applied physiology 2005-06, Vol.30 (3), p.276-281
Main Authors: Richardson, Matt, Bruijn, Robert de, Holmberg, H.-C, Björklund, Glenn, Haughey, Helena, Schagatay, Erika
Format: Article
Language:English
Subjects:
Adult
Apnea
Apnea - blood
Apnea - physiopathology
Biologi
Biological and medical sciences
Biology
Care and treatment
cross country skiing
Diving - physiology
endurance training
Exercise
Female
Fundamental and applied biological sciences. Psychology
Hemoglobin
Hemoglobins - analysis
Humans
Idrott
INTERDISCIPLINARY RESEARCH AREAS
Male
Medicin och hälsovetenskap
Methods
NATURAL SCIENCES
NATURVETENSKAP
Organism biology
Organismbiologi
Physiological aspects
Risk factors
Skiing - physiology
Spleen - blood supply
spleen contraction
Sports
Time Factors
TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN
Vertebrates: blood, hematopoietic organs, reticuloendothelial system
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary:Human splenic contraction occurs both during apnea and maximal exercise, increasing the circulating erythrocyte volume. We investigated the hematological responses to 3 maximal apneas performed by elite apneic divers, elite cross-country skiers, and untrained subjects. Post-apnea hemoglobin concentration had increased in all groups, but especially in divers. The increases disappeared within 10 min of recovery. Apneic duration across apneas also increased the most in divers. Responses in divers could be more pronounced as a result of apnea training. Key words: breath hold, serial apneas, spleen contraction, cross-country skiing
ISSN:1066-7814
1543-2718
1543-2718
DOI:10.1139/h05-120