Genetics contribute more to maximum heart rate than physical fitness.
Our research shows that the variation in maximum heart rate within age groups is fairly large. The magnitude of the reduction depends on the dosage, so we recommend that you test yourself to find an exact HRmax. Hence, beta blockers reduce the maximum heart rate. Adrenaline causes the heart to pump both harder and faster. The reason for that is that heart patients and others on beta blockers will have a reduced maximum heart rate.īeta blockers bind to adrenaline receptors and block access for adrenaline molecules. Our HRmax Calculator asks you to check a box if you use beta blockers. The HRmax Calculator is based on this formula: "211 - 0.64*age".Īge-predicted maximal heart rate in healthy subjects: The HUNT Fitness Study Maximum heart rate and beta blockers
Based on these tests we made a completely new formula which estimates maximum heart rate far more accurately than "220 minus age". In The HUNT Fitness Study, we measured accurate maximum heart rate in 3,320 healthy adults aged between 19 and 89. In fact, the method is inaccurate already at an age of 30–40 years, and gets more inaccurate the older you are. The traditional formula for determining HRmax is "220 minus age", but can underestimate HRmax by up to 40 beats per minute in seniors. If the test is finished before the load is high enough, you risk not to detect subclinical heart disease. Therefore, it is of great clinical relevance to have a way to accurately estimate HRmax.
During stress testing, age-expected maximum heart rate is used as a guideline for when the test should be concluded. Maximum heart rate (HRmax) is an important tool to uncover cardiovascular disease. Important to get the maximum heart rate right
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