Transcutaneous Monitoring of pCO2 for the Noninvasive Determination of the Anaerobic Threshold

  • K. Röcker
  • J. M. Steinacker
  • M. Stauch
Conference paper


Ventilation at rest and on mild exercise is mainly controlled by pCO2. Increasing work load rises production of pCO2 in tissues. At the aerobic-anaerobic threshold (AAS) the accumulating hydrogen ions are buffered by carbonate till the buffering capacity is reached. Further increase in work load causes a decrease of pH and base excess (BE) which stimulate ventilation. At this point arterial pCO2 declines and ventilation rises. This is known as respiratory anaerobic threshold (1, 5, 7). Another concept to detect the AAS is to measure lactate concentration during increasing work load. Lactic AAS is defined by a fixed or individual value of blood lactate (2).


Blood Lactate Anaerobic Threshold Mild Exercise Iridium Oxide Deflection Point 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • K. Röcker
    • 1
  • J. M. Steinacker
    • 1
  • M. Stauch
    • 1
  1. 1.Abt. Sport- und LeistungsmedizinMedizinische Universitätsklinik und PoliklinikUlmFederal Republic of Germany

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