Based on this review of research and application of HRmax prediction, the following recommendations can be

made;

**1. Currently, there is no acceptable method to estimate HRmax.**
2. If HRmax needs to be estimated, then population specific formulae should be used. However, the most

accurate general equation is that of Inbar (17) (Table 3); HRmax=205.8-0.685(age). Nevertheless, the error

(Sxy=6.4 b/min) is still unacceptably large.

3. An acceptable prediction error for HRmax for application to estimation of VO2max is <±3 b/min. Thus, for

a person with a HRmax of 200 b/min, error equals ±1.5%. If this precision is not possible, then there is no

justification for using methods of VO2max estimation that rely on HRmax prediction formulae.

Prediction of Maximal Heart Rate

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4. Additional research needs to be performed that develops multivariate regression equations that improve the

accuracy of HRmax prediction for specific populations, and modes of exercise.

5. The use of HRmax is most prevalent in the fitness industry, and the people who work in these facilities

mainly have a terminal undergraduate degree in exercise science or related fields. These students/graduates

need to be better educated in statistics to recognize and understand the concept of prediction error, and the

practical consequences of relying on an equation with a large standard error of estimate (Sxy).