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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2016 Aprile;175(4):154-7

lingua: Inglese

The validity of maximum heart rate predictions based on age for young men

Jully BARBOZA 1, 2, Fernando S. NOGUEIRA 1, 2, Dailson PAULUCIO 1, 2, Fernando A. POMPEU 1, 2

1 Biometry Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; 2 Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil


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BACKGROUND: Equations for predicting maximal heart rate (HRmax) based on a subject’s age are used to estimate peak effort and prescribe exercise. The objective of this study was to determine the accuracy of HRmax estimates generated using the “220 - age” and “208 - (0.7 × age)” formulas.
METHODS: To achieve this objective, 41 apparently healthy, physically active, non-smoking male volunteers (age: 28±5 years; body mass: 77.0±10.6 kg) were examined. The subjects performed a maximal strength test on a treadmill with a slope of 5.25%, an initial velocity of 133-200 m · min-1, and increments of 16.7 m · min-1 in 3-minute stages interspersed with intervals of equal duration. Heart rate (HR) was monitored continuously by telemetry. HRmax measurements were compared with predicted values by repeated-measures analysis of variance (ANOVA) and post hoc Tukey honestly significant difference (HSD) tests.
RESULTS: The measured HRmax values (190±7 bpm) did not significantly differ from the HRmax values predicted by the first (188±3 bpm) or second (192±5 bpm) equation. However, there were significant differences between the values predicted by the two equations (p < 0.05).
CONCLUSIONS: Thus, it was concluded that both formulas satisfactorily predict HRmax measurements for young adult males.

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