Effect of acute induced metabolic alkalosis on 800-m racing time
Gespeichert in:
Deutscher übersetzter Titel: | Wirkung einer akut induzierten metabolischen Alkalose auf die 800-m-Laufzeit |
---|---|
Autor: | Wilkes, D.; Gledhill, N.; Smyth, R. |
Erschienen in: | Medicine and science in sports and exercise |
Veröffentlicht: | 15 (1983), 4, S. 277-280, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0195-9131, 1530-0315 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU198401019942 |
Quelle: | BISp |
TY - JOUR AU - Wilkes, D. A2 - Wilkes, D. A2 - Gledhill, N. A2 - Smyth, R. DB - BISp DP - BISp KW - 800-m-Lauf KW - Alkalose KW - Blutlaktat KW - Energiesubstrat KW - Kapazität, anaerobe KW - Laufzeit KW - Mittelstreckenlauf KW - pH-Wert KW - Sportmedizin KW - Standardbikarbonat KW - Stoffwechsel KW - Säure-Basen-Haushalt LA - eng TI - Effect of acute induced metabolic alkalosis on 800-m racing time TT - Wirkung einer akut induzierten metabolischen Alkalose auf die 800-m-Laufzeit PY - 1983 N2 - Six trained middle-distance runners were studied under alkalotic (NaHCO3 ingestion), placebo (CaCO3 ingestion), and control conditions to determine the effect of an acute induced metabolic alkalosis on time to run an 800-m race. Pre-exercise, following NaHCO3 ingestion, pH and standard (HCO3) were significantly higher. In the alkalotic condition, subjects ran faster (2.9 s) and the corresponding post-exercise values for blood (lactate) and extracellular H+ were higher than in the control and placebo conditions, suggesting an increased anaerobic energy contribution. These results support the speculation that the increase in extracellular buffering following NaHCO3 ingestion facili tated H+ efflux from the cells of working muscle, thereby delaying the decrease in intracellular pH and postponing fatigue. It is concluded that the in gestion of NaHCO3 by trained middle-distance runners prior to an 800-m race has an ergogenic benefit. Verf.-Referat SP - S. 277-280 SN - 0195-9131 JO - Medicine and science in sports and exercise IS - 4 VL - 15 M3 - Gedruckte Ressource ID - PU198401019942 ER -