CardioPulmonary Exercise Test Framework (CPET)

 

For more than four years, Breath Research expanded its research focus towards information extraction and analysis of Cardio-Pulmonary Exercise Tests (CPET). The goal was to try and approach the analysis results and accuracy of an official medical gas analyzer used in hospitals and labs worldwide, through pure audio analysis.

Through extensive testing and fine-tuning, using over 130 real-life CPET sessions and in close collaboration with field experts, doctors and physicians we have achieved high-accuracy, automatic ventilatory threshold extraction.

Using DSP we are extracting the breath intensity, (a 1-to-1 corresponding metric to the Ventilatory Equivalent) and the respiratory rate. Various derived descriptors are ultimately combined and incorporated to the end-detection framework.

Our custom framework is successfully detecting the ventilatory thresholds for an heterogenous set of patients/sessions. Samples have the following characteristics.

  • Range from an age span of 18-65
  • Include all possible physical conditions (from professional athletes to people with very low physical condition)
  • Time spans of sessions analyzed range from 9 mins to 25 mins of exercise testing
  • Overall VT and RCT detection rate was over 93% (spot-on) with very small detection deviation

Our beta exercise test analysis framework is available for limited use as a stand-alone OSX desktop app. This includes full visual analysis, graphs, plotting and details for sports as well as for use in medical labs by professional physicians.

We are offering customized solutions according to the application at hand. Contact us for more details.