Age-predicted maximal heart rate in recreational marathon runners: A cross-sectional study on Fox’s and Tanaka’s equations For a long time, formulas are known on the basis of which one can estimate the maximum heart rate (HRMAX) in sports due to the age of the athlete. Specially mentioned is the formula according to Fox (220-age) and the formula to Tanaka (208-0.7xalter). So far, these formulas have not been validated in marathon runners, despite the importance of the role of Hrmax for training purposes. We have now validated the two formulas at 180 marathon runners.We came to the conclusion that the formulas of Fox and Tanaka overestimated the Hfmax in women by 5 beats per minute, while Fox underestimated the HFMAX in men around \ ~ 3 beats per minute. Therefore, we recommend the use of the formula of Tanaka only in male marathon runners.
In addition, sports physiologists and sport scientists should consider the observed differences between the different valuation methods when they create training plans. The whole work can be found under https://www.frontiersin.org/articles/10.3389/fhys.2018.00226/full