title: The effect of sodium citrate intake on anaerobic performance in normoxia and after sudden ascent to a moderate altitude.
abstract: BACKGROUND
  The effect of sodium citrate intake on anaerobic performance in normoxia and acute hypoxia was tested in 17 healthy male subjects.
  
  
  METHODS
  The subjects underwent a high-intensity exercise protocol in conditions of normoxia (N) and at 2320 m above the sea level (H). Each condition was combined with the intake of a placebo (Pl) or sodium citrate (C).
  
  
  RESULTS
  The results obtained showed a drop in the maximum HR (p<0.001), due to the effect of the altitude (185+/-8 vs 176+/-8 bpm for N and H under Pl conditions and 189+/-9 vs 178+/-8 bpm for N and H under C conditions). C caused an increase in the RER (p<0.05) and the maximum Lac (p<0.01). The action of this same factor brought about a drop in the maximum VE (p<0.01) (182.60+/-21.58 vs 177.38+/-20.29 l x min(-1) in N and 185.71+/-22.98 vs 179.06+/-22.91 l x min(-1) in H). The interaction of both C and H affected the maximum concentration of lactate obtained (p<0.01), which fell as regards that expected by the corresponding action of both factors separately (14.33+/-2.94 vs 17.8+/-2.74 mMol x l(-1) with Pl and C in N and 15.29+/-2.15 vs 15.54+/-2.59 mMol x l(-1) in H). There were no significant differences in the length of work time in each of the conditions established.
  
  
  CONCLUSIONS
  It would, therefore, seem that in the conditions described, the intake of sodium citrate does not cause appreciable changes in anaerobic performance.
authors.affiliation: Department of Physical Education, University of Granada, Granada, Spain. mbelen@ugr.es
authors.forename: B
authors.initials: B
authors.lastname: Feriche Fernández-Castanys
authors.forename: M
authors.initials: M
authors.lastname: Delgado-Fernández
authors.forename: J
authors.initials: J
authors.lastname: Alvarez García
mesh_terms: D000328:Adult; D000531:Altitude; D015308:Anaerobic Threshold / Q000187:drug effects*; D002951:Citrates / Q000494:pharmacology*; D004311:Double-Blind Method; D015444:Exercise / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D019344:Lactic Acid / Q000097:blood; D008297:Male; D011659:Pulmonary Gas Exchange; D012123:Pulmonary Ventilation; D000077559:Sodium Citrate
chemical_list: D002951:Citrates; D000077559:Sodium Citrate; D019344:Lactic Acid