title: [Protein supplement consumption and its possible association with kidney damage in Mexican elite athletes].
abstract: BACKGROUND
  Protein supplements are one of the most used ergogenic supplements by elite athletes. Nonetheless, it has been postulated that the use of these type of supplements may cause chronic renal failure. The objective of this study is to analyze the effects of the consumption of protein supplements in the renal function of elite athletes of the Mexican Olympic Training Center.
  
  
  METHODS
  74 athletes provided urine samples in order to quantify urinary proteins. Some of them were excluded since they had conditions that could cause proteinuria or alter the quality of the samples. Those that were not excluded were divided into two groups: the experimental group, which included those individuals that had the antecedent of consuming protein supplements, and the control group, that encompassed those individuals that did not had the antecedent of consuming protein supplements.
  
  
  RESULTS
  Of the 74 analyzed athletes, 44 were excluded, 11 individuals were included in the experimental group, and 19 in the control group. Microproteinuria was encountered in only one urine sample (control group), and it was determined that there was no significant differences between both groups.
  
  
  CONCLUSIONS
  From the gathered results it can be concluded that protein supplements do not affect renal function. Nonetheless, in the future protein supplements should be evaluated in groups with pathologies or conditions that may compromise renal function.
authors.affiliation: Facultad de Ciencias de la Salud, Universidad Anáhuac Campus Norte, Estado de México, México. rubenblach@gmail.com.
authors.forename: Alan
authors.initials: A
authors.lastname: Pomerantz
authors.forename: Ruben
authors.initials: R
authors.lastname: Blachman-Braun
authors.forename: Socorro
authors.initials: S
authors.lastname: Vital-Flores
authors.forename: Roberto
authors.initials: R
authors.lastname: Berebichez-Fridman
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Aguilar-Mendoza
authors.forename: David
authors.initials: D
authors.lastname: Lara-Villalón
mesh_terms: D000328:Adult; D056352:Athletes; D003430:Cross-Sectional Studies; D004044:Dietary Proteins / Q000009:adverse effects*; D019587:Dietary Supplements / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico; D058573:Performance-Enhancing Substances / Q000009:adverse effects*; D011507:Proteinuria / Q000175:diagnosis / Q000209:etiology*; D051437:Renal Insufficiency / Q000175:diagnosis / Q000209:etiology* / Q000652:urine; D055815:Young Adult
chemical_list: D004044:Dietary Proteins; D058573:Performance-Enhancing Substances
keywords: Adverse effects; Protein supplements; Proteinuria; Renal insufficiency