A new age-based equation for predicting maximum heart rate in endurance-trained runners

Machado, Fabiana Andrade; Kravchychyn, Ana Claudia Pelissari; Peserico, Cecília Segabinazi; Silva, Danilo Fernandes da; Mezzaroba, Paulo Victor

doi:10.1016/j.rbce.2018.01.003

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Sumário

Original article • Rev. Bras. Ciênc. Esporte 40 (1) • Jan-Mar 2018 • https://doi.org/10.1016/j.rbce.2018.01.003 copy

A new age-based equation for predicting maximum heart rate in endurance-trained runners

Uma nova equação baseada em idade para predição da frequência cardíaca máxima em corredores aerobiamente treinados

Una nueva ecuación basada en la edad para pronosticar la frecuencia cardíaca máxima en corredores entrenados en resistencia

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

This study aimed to generate an age-based maximum heart rate (HR_max) equation for endurance-trained runners. Thirty-four male runners performed three tests on a motorized treadmill, starting at 8 km h^-1 with increments of 1 km h^-1 every 1, 2 or, 3 min. HR_max was defined as the highest heart rate value recorded during each test. Post hoc analyses indicated that the HR_max derived from each test was significantly lower than the highest HR_max value, for each participant. HR_max predicted by "206 - 0.7 × age" underestimated the highest HR_max by 8.6 beats min^-1. Thus, the generated age-based "218 - 0.8 × age" equation should be used to predict HR_max in endurance-trained runners.

KEYWORDS
Cardiovascular system; Exercise test; Physical endurance; Running

Variables	Mean ± SD
Age (years)	40.1 ± 12.8
Body mass (kg)	67.7 ± 7.2
Height (cm)	173.3 ± 7.0
Body mass index (kg m^-2)	22.5 ± 1.8
Training frequency (days wk^-1)	4.9 ± 1.5
Training distance (km wk^-1)	58.5 ± 31.7

Protocol	RPE_peak (6-20 Borg scale)	LA_peak (mmol L^-1)	%APMHR (%)	Time to exhaustion (min)	HR_max (beats min^-1)
SS	19.8 ± 0.6	9.4 ± 2.2	102.3 ± 4.0	11.1 ± 1.6	181.8 ± 12.1
IS	19.8 ± 0.4	9.2 ± 1.9	104.0 ± 4.3^a a p < 0.05 compared with the SS protocol.	19.4 ± 3.0^a a p < 0.05 compared with the SS protocol.	184.8 ± 12.7^a a p < 0.05 compared with the SS protocol.
LS	19.9 ± 0.4	7.9 ± 2.2^a a p < 0.05 compared with the SS protocol.	103.0 ± 4.1^a a p < 0.05 compared with the SS protocol.	26.7 ± 4.7^a a p < 0.05 compared with the SS protocol. ,^b b p < 0.05 compared with the IS protocol.	183.1 ± 12.9
SIL	20.0 ± 0.0	10.3 ± 2.0^a a p < 0.05 compared with the SS protocol. ,^b b p < 0.05 compared with the IS protocol. ,^c c p < 0.05 compared with the LS protocol.	104.8 ± 4.1^a a p < 0.05 compared with the SS protocol. ,^b b p < 0.05 compared with the IS protocol. ,^c c p < 0.05 compared with the LS protocol.	-	186.3 ± 12.7^a a p < 0.05 compared with the SS protocol. ,^b b p < 0.05 compared with the IS protocol. ,^c c p < 0.05 compared with the LS protocol.

Colégio Brasileiro de Ciências do Esporte Universidade de Brasilia - Campus Universitário Darcy Ribeiro, Faculdade de Educação Física, Asa Norte - CEP 70910-970 - Brasilia, DF - Brasil, Telefone: +55 (61) 3107-2542 - Brasília - DF - Brazil
E-mail: rbceonline@gmail.com

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[1] * Corresponding author. famachado_uem@hotmail.com (F.A. Machado).