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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
Rivista di Medicina, Traumatologia e Psicologia dello Sport
Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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ORIGINAL ARTICLES CLINICAL MEDICINE
The Journal of Sports Medicine and Physical Fitness 2014 October;54(5):658-64
Modifications of biochemical parameters related to protein metabolism and renal function in male soccer players after a match
Colombini A. 1, Machado M. 2, 3, Lombardi G. 1, Lanteri P. 1, Banfi G. 1, 4 ✉
1 Laboratory of Experimental Biochemistry and Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Milan, Italy;
2 Laboratory of Human Movement Studies, Universitary Foundation of Itaperuna, Itaperuna, Rio de Janeiro, Brazil;
3 Laboratory of Physiology and Biokinetics, Iguaçu University at Itaperuna, Itaperuna, Rio de Janeiro, Brazil;
4 Chair of Clinical Biochemistry, School of Medicine, University of Milan, Milan, Italy
AIM: The impact of a soccer match on parameters related to protein catabolism and renal function was evaluated in male players.
METHODS: Blood was collected before and immediately after a 90 minutes soccer match from 19 athletes of two first division teams in Brazil. Red blood cells (RBC), hemoglobin (Hb), hematocrit (Ht), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC), ammonia, uric acid, urea and creatinine were analyzed. The modification of plasma volume was calculated, and biochemical values were corrected for this change. Urea/creatinine ratio and equations to estimate the glomerular filtration rate (eGFR) were used to assess kidney function.
RESULTS: Plasma volume decreased from pre- to post-match. Post-match values higher than the pre-match ones were observed for RBC, Hb and Ht, as a consequence of plasma volume decrease. An increase in ammonia and creatinine concentrations post-match in comparison with pre-match values was registered, without changes in uric acid and urea levels. A reduction in urea/creatinine ratio and in eGFR was observed post-match, suggesting a decrease of renal function.
CONCLUSION: A soccer match induced alterations in parameters linked to renal function and protein metabolism in male athletes. Particular attention should be paid in the monitoring of the ammonia concentration as an indicator of metabolic activity and energy requirement during prolonged exercise.