1. Measured maximal heart rates compared to commonly used age-based prediction equations in the Heritage Family Study.
- Author
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Sarzynski MA, Rankinen T, Earnest CP, Leon AS, Rao DC, Skinner JS, and Bouchard C
- Subjects
- Adolescent, Adult, Age Factors, Aged, Black People, Canada, Female, Humans, Male, Middle Aged, Sex Factors, United States, White People, Young Adult, Black or African American, Exercise Test methods, Heart Rate, Motor Activity
- Abstract
Objective: The purpose of this study was to examine how well two commonly used age-based prediction equations for maximal heart rate (HRmax ) estimate the actual HRmax 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. HRmax was measured during maximal exercise tests using cycle ergometers. Age-based HRmax was predicted using the Fox (220-age) and Tanaka (208 - 0.7 × age) formulas., Results: The standard error of estimate (SEE) of predicted HRmax was 12.4 and 11.4 bpm for the Fox and Tanaka formulas, respectively, indicating a wide-spread of measured-HRmax 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 HRmax equations do not precisely predict an individual's measured-HRmax ., (Copyright © 2013 Wiley Periodicals, Inc.)
- Published
- 2013
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