Interrelationship between pH, plasma potassium concentration and ventilation during intense continuous exercise in man

Gespeichert in:
Bibliographische Detailangaben
Deutscher übersetzter Titel:Wechselbeziehung zwischen pH-Wert, der Plasmakonzentration an Kalium und der Ventilation während intensiver kontinuierlicher körperlicher Belastung beim Menschen
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.