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J Appl Physiol 19: 246-248, 1964;
8750-7587/64 $5.00
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Nature of purines excreted in urine during muscular exercise

Salah Nasrallah 1 and Usama Al-Khalidi 1

1 Department of Biochemistry, American University of Beirut, Beirut, Lebanon

The purines which were previously noted to increase in the urine during muscular exercise have been identified as hypoxanthine and xanthine. Quantitative studies on 11 human subjects showed that the magnitude of the increase in excretion of hypoxanthine varied greatly and reached up to 20-fold in some cases. The increase in the excretion of xanthine was less pronounced with the maximum about threefold.

xanthine and hypoxanthine excretion

Submitted on August 8, 1963




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C. G. Stathis, S. Zhao, M. F. Carey, and R. J. Snow
Purine loss after repeated sprint bouts in humans
J Appl Physiol, December 1, 1999; 87(6): 2037 - 2042.
[Abstract] [Full Text] [PDF]


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