Sodium bicarbonate improves swimming performance
Deutscher übersetzter Titel: | Natriumbikarbonat verbessert die Schwimmleistung |
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Autor: | Lindh, A.M.; Peyrebrune, M.C.; Bailey, D.M.; Folland, J.P.; Ingham, S.A. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 29 (2008), 6, S. 519-523, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-989228 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU200809002855 |
Quelle: | BISp |
Abstract
Sodium bicarbonate ingestion has been shown to improve performance in single-bout, high intensity events, probably due to an increase in buffering capacity, but its influence on single-bout swimming performance has not been investigated. The effects of sodium bicarbonate supplementation on 200m freestyle swimming performance were investigated in elite male competitors. Following a randomised, double blind counterbalanced design, 9 swimmers completed maximal effort swims on 3 separate occasions: a control trial (C); after ingestion of sodium bicarbonate (SB:NaHCO3 300 mg/kg body mass); and after ingestion of a placebo (P:CaCO3 200 mg•kg-1 body mass). The SB and P agents were packed in gelatine capsules and ingested 90-60min prior to each 200m swim. Mean 200m performance times were significantly faster for SB than C or P (1:52.2+/-4.7; 1:53.7+/-3.8; 1:54.0+/-3.6min:ss; p<0.05). Base excess, pH and blood bicarbonate were all elevated pre-exercise in the SB compared to C and P trials (p<0.05). Post-200m blood lactate concentrations were significantly higher following the SB trial compared with P and C (p<0.05). It was concluded that SB supplementation can improve 200m freestyle performance time in elite male competitors, most likely by increasing buffering capacity. Verf.-Referat