athletic pseudoanaemia

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A false anaemia associated with regular and vigorous aerobic exercise. During the exercise, blood plasma volume is lowered by sweating, the production of metabolites, and an increase in arterial pressure. The body adapts to these changes by conserving water and salt between bouts of exercise. This results in an increase in the base plasma volume, diluting the red blood cells and decreasing the haemoglobin concentration. The absolute amount of haemoglobin (i.e. the total red cell mass) is usually higher than in a sedentary person and, unlike true anaemia the oxygen carrying capacity of the blood of a person with athletic pseudoanaemia is not impaired. See also iron-deficiency anaemia.

Subjects: Sports and Exercise Medicine.

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