Wearable Cardiopulmonary Exercise Testing
K4b2: Gold Standard Mobile Metabolic System

Why limit your studies to the length of the cable?

  • Pulmonary Gas Exchange (VO2, VCO2)

  • Breath by Breath Technology

  • Telemetry Data Transmission up to 1000m

  • Indirect Calorimetry

  • Integrated GPS System

  • Integrated Oxygen Saturation (SpO2)

  • Integrated 12-lead Stress Testing ECG


  • K4b2The K4b2 is the first portable system for pulmonary gas exchange measurement with true breath-by-breath analysis. Its technology and dimensions allow the user to measure physiological response to exercise without limitations. With more than 20 years of experience in mobile VO2 testing, K4b2 is the most accurate and reliable device under any conditions. The K4b2 has been validated, used and mentioned in more than 600 publications worldwide including the most prestigious scientific journals. The K4b2 provides unsurpassed versatility. Whether in the lab or in the field, tests can be carried out in three different configurations: Holter Data Recorder, Telemetry Transmission and Laboratory Station. The K4b2 is provided with integrated GPS for speed, distance, altitude and position measurements, which are synchronized with Gas Exchange Data.
  • k4b2 testiconsCardio Pulmonary Exercise Testing
    Pulmonary Gas Exchange (VO2, VCO2) Anaerobic Threshold (AT)
    Indirect Cardiac Output (Wasserman)
    Inspiratory Capacity during exercise
    Integrated Global Positioning System (GPS)
    Integrated Pulse Oximeter (SpO2) (optional)
    Integrated 12-lead ECG (GAS/ECG) (optional)
    Exercise Gas Exchange with Elevated FiO2 (optional)

    Nutritional Assessment
    Resting Energy Expenditure (REE, RMR)
    Indirect Calorimetry (VO2, VCO2, RQ) with mask

    Forced/Slow Vital Capacity (SVC-FVC)
    Maximum Voluntary Ventilation (MVV)
    Bronchial Dilator test and Bronchial Challenge Test