MP Research Catalog - Biopac

40Exercise PhysiologyRespiratory Exchange Ratio Q39The Respiratory Exchange Ratio (RER) is determinedby dividing VCO 2 produced by VO 2 consumed. Themeasurement is very similar to the setup required forVO 2 consumption, except that the produced CO 2 flow isRecord a range of physiological parameters in response tothe physical stress of exercise. Examine ventilation, oxygenuptake and carbon dioxide production simultaneously withECG and core/surface temperature. Add biomechanicalmeasures such as EMG, limb movement, velocity andacceleration to supplement exercise physiology recordings.For certain applications, it’s possible to include cardiacoutput measurements.Features• Respiratory Exchange Ratio• End-tidal CO 2• VO 2 Consumption• Anaerobic Threshold• Breath-By-Breath Respiratory Gas Analysis• Noninvasive Cardiac OutputSee also — Pulmonary Function (page 38),Remote Monitoring (46), and Biomechanics (44)Applicationsintegrated simultaneously with the consumed O 2 flow.The RER can be presented in real time, with valuesrepresenting the running average of RER for the last(user-specified) number of seconds. Save the graphicalRER waveform as text to create tabulated RER data;tabulated data can easily be ported to other applications.End-tidal CO 2To measure end-tidal CO 2 on a breath-by-breath basis,use the AFT20 gas sampling interface kit to connect theCO2100C module directly to the sampling port on theAFT25 facemask. Use AcqKnowledge’s rate detector tofind the peak of the cyclic CO 2 concentration signal.The running peak value represents the breath-by-breathend-tidal CO 2 .