Cardiac Fitness Index based on Treadmill Heart Rate monitoring and it’s Mathematical Simulation

: In a clinic, cardiologists use the heart rate variation to determine the cardiac fitness of a patient. For this purpose, they monitor their heart rate while on the treadmill and after the patient has gone off the treadmill. However, they only monitor their heart rate values, and not the trend of the heart rate variation. In order to characterize the cardiac fitness, we need to develop an index which describes the trend of heart rate variation while on and off the treadmill. In this paper, we have determined the heart rate variation equation. The equation for on the treadmill is given by: HR = HRe*t^-k2. The range of k1 was found to be 0.2 to 0.25. The range of k2 was found to be -0.2 to -0.3. Then we formulated the Cardiac Fitness Index (CFI) Formula: CFI = k2/k1×HRo/(HRe-HRo)× (HRe-HRf)/HRe ×100 HRo is the initial rate at the time of getting on the treadmill, HRe is the heart rate at the end of 10 minutes on the treadmill, and HRf is the final value of the heart rate at 10 minutes after getting off the treadmill. In this evaluated four patients and calculated their values of their CFIs. Based on this, we found the range of CFI to be from 87 to 34 with 87 being the highest and 34 being the lowest. Our intent is to monitor more subjects and find out the ranges for normal subjects and find out the ranges for normal subjects and subjects with cardiac symptoms. This can enable the cardiologist to diagnose a subject with cardiac issues and recommend the subject for further tests, to determine the precise nature of the cardiac problem. Now our Cardiac Fitness Index can be employed by cardiologists to make that decision. In fact, it can also be used at home to determine the cardiac fitness, and stay fit. Thus, our paper will enable both medical and non-medical people to assess their cardiac fitness and hence will have a wide range of applications.