Poly-Spectrum-Ergo software allows executing exercise testing by different cycle ergometers and treadmills. It can operate with Poly-Spectrum-12/E, Poly-Spectrum-8/E or Poly-Spectrum-8/EX ECG systems. Poly-Spectrum-Ergo module provides all the necessary software tools for exercise testing including special mode of exercise ECG imaging, the execution of the necessary on-line estimates, and the summary protocol generation. Exercise Testing Protocols: Multistage test (on cycle ergometer or treadmill) One-stage test based on BEE value (on cycle ergometer) Astrand-Test (on cycle ergometer) PWC 170 (on cycle ergometer) Three-stage Swedish protocol by Sjostrand (on cycle ergometer) R. Bruce protocol (on treadmill) J. Naughton protocol (on treadmill) Any protocol constructed by the user (on cycle ergometer or treadmill).