Normal Heart Rate During Exercise
Exercise affect heart rate..
...and regular controlled exercise strengthens heart muscles.
Normal heart rate during exercise increases rapidly as your exercise intensity increases - until you reach the point of exhaustion. As this level approaches, heart rate does not increase any further with increasing exercise effort. This heart rate is known as Maximum Heart Rate (MHR). Your approximate MHR is 220-your age. If your age is 50 years your approximate MHR will be 220-50=170.
But remember - this is a statistical norm. Your ‘actual’ MHR will depend on your cardiac fitness. For most 50 years old – ‘normal MHR’ may vary from 146 to 194 per minute. (This is normal distribution within 2 standard deviations.)
With change in cardiac fitness – your MHR may change significantly.
With deteriorating cardiac fitness (worsening
coronary heart disease
heart attack risk factors)
MHR may fall down within this range and further more.
LVEF (left ventricular ejaculation fraction) is an important clinical indicator of cardiac fitness. It is easily measured by doing echocardiography or radionulide ventriculgraphy.
Lower the LVEF – less will be MHR. Conversely,improvement in LVEF increases the Maximum Heart Rate (MHR).
Maximum heart rate (MHR) should not be confused with target heart rate (THR) which is 60-85% of MHR. You can find more about THR at this link.
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