Interrelationship between pH, plasma potassium concentration and ventilation during intense continuous exercise in man
Deutscher übersetzter Titel: | Wechselbeziehung zwischen pH-Wert, der Plasmakonzentration an Kalium und der Ventilation während intensiver kontinuierlicher körperlicher Belastung beim Menschen |
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Autor: | Busse, Martin W.; Maaßen, Norbert; Konrad, Hannelore; Böning, Dieter |
Erschienen in: | European journal of applied physiology |
Veröffentlicht: | 59 (1989), 4, S. 256-261, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 1439-6319, 0301-5548 |
DOI: | 10.1007/BF02388325 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199005040879 |
Quelle: | BISp |
Abstract des Autors
During resting conditions plasma hydrogen ion concentration ((H+)P) is known to influence ventilation (VE), whereas the control of plasma potassium concentration ((K+)P) at rest and of both (K+)P and VE during exercise are controversial issues. To obtain more information about these variables during muscular work, eight trained men performed two successive intense continuous cycle-ergometer tests, the first (test I) during metabolic acidosis, the second (test II) with an alkalotic pH. No correlation was found between (H+)P and (K+)P or VE in the direction of change of these variables in test I. Furthermore, no correlation between (H+)P and (K+)P in test I and II was seen. Instead (K+)P and VE changed in relation to the exercise intensity. We suggest that the results confirm (K+)P as an indicator of muscular stress. In addition, the similar behaviour of relative values of (K+)P and VE changes in test I (r=0.9, m=1.0, where m is the slope of the regression curve) supports the hypothesis that extracellular potassium controls VE and thereby (H+)P also.