Concentrations of ions and metals in blood of amateur and elite runners using NAA
- 189 Downloads
Intense physical training is known to be associated with increased mineral losses through sweating (during the exercise) and also through urine (after the exercise). Nowadays physical training is recognized for adapting or damaging the muscles, depending on the intensity and duration of the effort, provoking detectable metabolic alterations in blood, mainly in the content of some ions. In this study Br, Ca, Cl, K, Mg, Na and S levels were investigated in blood of Brazilian athletes that were submitted to constant physical exercise, at Laboratório de Bioquímica do Exercício (LABEX/UNICAMP) using Neutron Activation Analyses technique (NAA). The blood samples were collected from male amateurs and elite athletes, ranging from 18 to 36 years old. The blood samples were irradiated in the nuclear reactor (IEA-R1, 3–4.5 MW, pool type) at IPEN/São Paulo-Brazil. The concentrations data were compared with the control group (subjects of same gender and age but not involved with physical activities). These data can be useful for evaluating the performance of endurance athletes during the period of competition preparation as well as to propose new evaluation of protocols not yet reported.
KeywordsBlood Ions Athletes NAA
The authors would like to acknowledge the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Instituto de Pesquisas Energéticas e Nucleares (IPEN) for the financial support.
- 1.The National Academies (2005) http://www.nap.edu/openbook.php?record_id=10925. Accessed 01 Oct 2011
- 2.The National Academies (1997) http://www.nap.edu/openbook.php?record_id=5776. Accessed 01 Oct 2011
- 3.Sports Science Exchange (2004) http://www.gssi.com.br/artigo/120/sse-92. Accessed 01 Oct 2011
- 5.Mahan LK, Stump SE (2008) Krause’s Food & Nutrition Therapy. Brace & Co., PhiladelphiaGoogle Scholar
- 6.Brouns F (1995) Nutritional needs of athletes. John Wiley & Sons, EnglandGoogle Scholar
- 7.The National Academies (2011) http://www.iom.edu/Activities/Nutrition/SummaryDRIs/DRI-Tables.aspx. Accessed 01 Oct 2011
- 8.ANVISA (2011) Brazil. http://www.anvisa.gov.br/legis/portarias/33_98.htm. Accessed 01 Oct 2011
- 11.Sharp RL (2006) J Am Coll Nutr 25(3):231S–239SGoogle Scholar
- 19.Medeiros JAG, Zamboni CB, Zahn GS, Oliveira LC, Dalaqua LJ (2005) Software para realização de análises hematológicas utilizando processo radioanalítico. Proceeding of 39º Brazilian Congress of Clinical PathologyGoogle Scholar