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J Appl Physiol (October 18, 2002). doi:10.1152/japplphysiol.00368.2002
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Articles in PresS, published online ahead of print October 18, 2002
J Appl Physiol, 10.1152/jap.00368.2002
Submitted on April 26, 2002
Accepted on October 15, 2002

Time course of hemorheological alterations following heavy anaerobic exercise in untrained human subjects

Ozlem Yalcin1, Alpaslan Erman2, Sedat Muratli2, Melek Bor-Kucukatay1, and Oguz K Baskurt1*

1 Department of Physiology, Akdeniz University School of Medicine, Antalya, Turkey
2 School of Physical Education and Sports, Akdeniz University, Antalya, Turkey

* To whom correspondence should be addressed. E-mail: baskurt{at}akdeniz.edu.tr.

The time course of hemorheological alterations was investigated after a heavy, anaerobic exercise bout in untrained male human subjects. The Wingate protocol was performed by each subject and blood lactate, red blood cell (RBC) deformability and aggregation, white blood cell (WBC) activation were investigated together with hematological parameters during 24hours following the exercise and compared with pre-exercise values. Blood lactate was found to be ~10 folds higher immediately after the exercise bout, compared to pre-exercise value. There was a transient, significant increment in RBC and WBC counts immediately after the exercise, followed by a decrement in RBC. There was a second phase of increment in WBC count, accompanied with increased percentage of granulocytes and granulocyte activation, starting 45 minutes after exercise. RBC deformability was found to be impaired immediately after exercise and remained low for at least 12 hours, in comparison with pre-exercise value. RBC aggregation was also found to be decreased, however this response was delayed. The results of this study indicated that a single bout of heavy, anaerobic exercise may induce significant hemorheological deterioration lasting for 12 hours, and thus suggest the need to consider such effects in individuals with impaired cardiovascular function.




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