Document Detail

Blood lactate and ammonia in short-term anaerobic work following induced alkalosis.
MedLine Citation:
PMID:  8775645     Owner:  NLM     Status:  MEDLINE    
This study was designed to investigate the effect of an induced metabolic alkalosis on a 300 m sprinting time in six elite 400 m runners. The subjects competed as pairs, on two separate occasions, in a standard racing format, three hours after ingestion of either an alkaline (sodium citrate, 0.5 body weight) or a placebo solution (calcium carbonate, 0.5 body weight). The results showed that following alkaline ingestion mean sprinting time was not improved. Peak blood lactate during recovery was higher after sodium citrate administration than after placebo (19.88 +/- 2.09 vs 18.82 +/- 1.84 mmol.l-1, p < 0.01). No difference was observed in peak blood ammonia between the alkaline and placebo treatments (187.0 +/- 37.0 vs 188.8 +/- 49.0 mumol.l-1). The absence of effects on performance confirms that when exercise of short duration (30 to 40 s) is used, alkaline agents have minor or no effects on performance. The altered relationship observed between blood lactate and ammonia under placebo and buffering loading conditions suggests that the regulation of lactate and ammonia metabolism is unrelated.
J Ibanez; T Pullinen; E Gorostiaga; A Postigo; A Mero
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  The Journal of sports medicine and physical fitness     Volume:  35     ISSN:  0022-4707     ISO Abbreviation:  J Sports Med Phys Fitness     Publication Date:  1995 Sep 
Date Detail:
Created Date:  1996-12-06     Completed Date:  1996-12-06     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  187-93     Citation Subset:  IM    
Centro de Investigacion y Medicina del Deporte, Instituto Navarro de Deporte y Juventud, Gobierno de Navarra, Pamplona, Spain.
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MeSH Terms
Alkalosis / blood*
Ammonia / blood*
Exercise / physiology*
Lactic Acid / blood*
Running / physiology*
Reg. No./Substance:
50-21-5/Lactic Acid; 7664-41-7/Ammonia

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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