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Thursday, June 25th, 2009<br />

We concluded that in the maximal work test preceded by apneas, the spleen contraction and resulting Hb elevation abolished the slow<br />

component. Thus VO2 max will not be reached before the blood-boosting spleen contraction is induced, which takes several minutes<br />

during work alone, but is pre-triggered when work is preceded by apneas. Also lactate or other effects <strong>of</strong> apnea and/or hyperventilation<br />

may affect the peak VO2, which calls for further study.<br />

References<br />

Laub M, Hvid-Jacobsen K,.Hovind P, Kanstrup IL, Christensen NJ and Nielsen SL. (1993). Spleen emptying and venous hematocrit in humans<br />

during exercise. J Appl Physiol, 74, 1024-1026.<br />

Schagatay E, Andersson JPA, Hallén M and Pålsson B. (2001). Selected contribution; Role <strong>of</strong> spleen emptying in prolonging apneas in<br />

humans. J Appl Physiol, 90, 1623-1629.<br />

OSLO/NORWAY, JUNE 24-27, 2009 303

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