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Measured maximal heart rates compared to commonly used age‐based prediction equations in the heritage family study
Author(s) -
Sarzynski M.A.,
Rankinen T.,
Earnest C.P.,
Leon A.S.,
Rao D.C.,
Skinner J.S.,
Bouchard C.
Publication year - 2013
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.22431
Subject(s) - hum , mathematics , heart rate , demography , medicine , statistics , cardiology , blood pressure , art , sociology , performance art , art history
Objective The purpose of this study was to examine how well two commonly used age‐based prediction equations for maximal heart rate (HR max ) estimate the actual HR max measured in Black and White adults from the HERITAGE Family Study. Methods A total of 762 sedentary subjects (39% Black, 57% Females) from HERITAGE were included. HR max was measured during maximal exercise tests using cycle ergometers. Age‐based HR max was predicted using the Fox (220‐age) and Tanaka (208 – 0.7 × age) formulas. Results The standard error of estimate (SEE) of predicted HR max was 12.4 and 11.4 bpm for the Fox and Tanaka formulas, respectively, indicating a wide‐spread of measured‐HR max values are compared to their age‐predicted values. The SEE (shown as Fox/Tanaka) was higher in Blacks (14.4/13.1 bpm) and Males (12.6/11.7 bpm) compared to Whites (11.0/10.2 bpm) and Females (12.3/11.2 bpm) for both formulas. The SEE was higher in subjects above the BMI median (12.8/11.9 bpm) and below the fitness median (13.4/12.4 bpm) when compared to those below the BMI median (12.2/11.0 bpm) and above the fitness median (11.4/10.3) for both formulas. Conclusion Our findings show that based on the SEE, the prevailing age‐based estimated HR max equations do not precisely predict an individual's measured‐HR max . Am. J. Hum. Biol., 25:695–701, 2013. © 2013 Wiley Periodicals, Inc.