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Original Paper

Familial Resemblance in Maximal Heart Rate, Blood Lactate and Aerobic Power

Lesage R. · Simoneau J.-A. · Jobin J. · Leblanc J. · Bouchard C.

Author affiliations

Physical Activity Sciences Laboratory, Laval University, Ste. Foy, Que., Canada

Related Articles for ""

Hum Hered 1985;35:182–189

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: September 02, 2008
Issue release date: 1985

Number of Print Pages: 8
Number of Figures: 0
Number of Tables: 0

ISSN: 0001-5652 (Print)
eISSN: 1423-0062 (Online)

For additional information: https://www.karger.com/HHE

Abstract

There are considerable interindividual differences in maximal oxygen uptake per kilogram of body weight (VO2 max/kg), maximal heart rate (max HR) and maximal blood lactate (max blood La) measured during a progressive exercise test. The aim of the study was to quantify the familial relationships for these variables. Parents and children of 38 families of French-Canadian descent were submitted to a modified Balke treadmill test. VO2 max/kg and max HR were the highest values reached during the test for 1 min. Max blood La was obtained from a blood sample taken 2 min after the test. The effects of age and sex were significant for max blood La and VO2 max/kg in each generation. Scores were thus adjusted through multiple regression procedures (age + sex + age × sex + age2), yielding residuals which were submitted to further analysis. Intraclass correlations (ri) were significant in pairs of sibs for max blood La and max HR, i.e. 0.28 (p < 0.01) and 0.43 (p < 0.05), respectively. For VO2 max/kg, pairs of spouses and sibs were about similarly correlated (ri = 0.20 and 0.15; p < 0.05). Data suggested that children were more related to their mother than to their father for VO2 max/ kg, VO2 max/kg of fat-free weight, and particularly for max HR. It was concluded that familial resemblance and heritability estimates for maximal aerobic power, max HR and max blood La were quite low and generally nonsignificant. Correlations between biological sibs were, however, consistently significant for max HR and max blood La. The suggestion of a maternal effect in maximal aerobic power should be further investigated.

© 1985 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: September 02, 2008
Issue release date: 1985

Number of Print Pages: 8
Number of Figures: 0
Number of Tables: 0

ISSN: 0001-5652 (Print)
eISSN: 1423-0062 (Online)

For additional information: https://www.karger.com/HHE


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