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Erschienen in: European Journal of Applied Physiology 2/2012

01.02.2012 | Original Article

Acute and chronic loading of sodium bicarbonate in highly trained swimmers

verfasst von: Sarah Joyce, Clare Minahan, Megan Anderson, Mark Osborne

Erschienen in: European Journal of Applied Physiology | Ausgabe 2/2012

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Abstract

In the present study, 200-m swim time in highly trained male swimmers was measured on two consecutive days (Trial 1 and Trial 2) and under three conditions [(1) acute loading, AcL; (2) chronic loading, ChL; (3) Placebo, PLA]. No sodium bicarbonate (NaHCO3) was administered between Trial 1 and Trial 2 under each condition. Blood lactate concentration ([La]), base excess of extracellular fluid (BEecf), plasma bicarbonate concentration ([HCO3 ]) and pH were determined before and after capsule administration as well as at 0, 3, 5, 15 and 30 min after each 200-m swim trial. Swim time was not different among AcL, ChL or PLA for Trial 1 or 2 and we observed no change in 200-m swim time from Trial 1 to 2 under any condition (F = 0.48, P = 0.80). [HCO3 ], pH and BEecf measured after capsule administration was higher during AcL and ChL when compared with PLA (P < 0.05). We did not observe any difference in blood [La] between the three conditions at any stage post-exercise (P > 0.05). The results indicate that acute and chronic loading of NaHCO3 does not improve 200-m swim time in highly trained male swimmers.
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Metadaten
Titel
Acute and chronic loading of sodium bicarbonate in highly trained swimmers
verfasst von
Sarah Joyce
Clare Minahan
Megan Anderson
Mark Osborne
Publikationsdatum
01.02.2012
Verlag
Springer-Verlag
Erschienen in
European Journal of Applied Physiology / Ausgabe 2/2012
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-011-1995-z

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