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Heart rate calculation


Full Member
2+ Year Member
Aug 30, 2016
  1. Medical Student

    If it is said that person A had a heart rate of 194 beats/minute at the age of 18 and is now 56 years old, how can I calculate the heart rate?

    I'm supposed to use the formula 220 - age which would give 220 - 56 = 164

    But the answer is 156, so I'm assuming they first control what the heart rate should be with the formula during age 18 --> 220 - 18 = 202 --> 8 beats/minute less than the actual heart rate (194).

    So when we got 164, we are supposed to do 164 - 8 = 156.

    What if it's the opposite - she had a heart rate of 212 during the age of 18? This would mean she has 10 beats/minute more than what the formula gives at age 18, so when we get 164 beats/minute at the age of 56 (according to formula), we need to add 10 --> 174 beats/minute. Is this correct? If so, the principle is the same.
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