Effects of warm-up on blood gases, lactate and acid-base status during sprint swimming
Gespeichert in:
| Deutscher übersetzter Titel: | Auswirkung von Aufwaermarbeit auf Blutgase, Laktat und Saeure-Basen-Status im Kurzstreckenschwimmen |
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| Autor: | Robergs, R.A.; Costill, D.L.; Fink, W.J.; Williams, C.; Pascoe, D.D.; Chwalbinska-Moneta, J.; Davis, J.A. |
| Erschienen in: | International journal of sports medicine |
| Veröffentlicht: | 11 (1990), 4, S. 273-278, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
| Sprache: | Englisch |
| ISSN: | 0172-4622, 1439-3964 |
| DOI: | 10.1055/s-2007-1024806 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU199201046351 |
| Quelle: | BISp |
Abstract
A standardized 200-m front crawl sprint swim (SpS) was used to evaluate the effects of warm-up on pH, blood gases, and the concentrations of lactate (La-) and bicarbonate (HCO3-) in arterialized and venous blood. Eight trained male swimmers performed two randomly assigned 200-m front crawl swims at previously determined intensities corresponding to 120 VO2max. One swim was preceded by a warm-up (WU trial) which consisted of a 400-m front crawl swim (82 VO2max), 400-m flutter kicking (45 VO2max), and 4 x 50-m front crawl sprints (111 VO2max). The second was performed without warm-up (NWU trial). Blood was sampled from a hyperemized ear-lobe and an antecubital vein before the warm-up, 9 min after the warm-up (1 min before the swim), immediately following the SpS, and at 2, 5, 10, and 20 min after the SpS. The results indicate that warm-up exercise can reduce the disturbance in blood acid-base balance during 2 min of intense swimming. It is proposed that the acid-base differences resulted from increased oxidative energy metabolism and a subsequent reduction in lactate and CO2 production. Verf.-Referat