TY - JOUR
T1 - Variability of heart rate, P-R, QRS and Q-T durations in twins
AU - Havlik, Richard J.
AU - Garrison, Robert J.
AU - Fabsitz, Richard
AU - Feinleib, Manning
PY - 1980
Y1 - 1980
N2 - During a cardiovascular risk factor study, electrocardiograms were done on 355 sets of middle-aged male monozygotic and dizygotic twins. Potential genetic variability in ventricular rate and P-R, QRS, and Q-T duration was investigated using classical statistical twin methodology. Significant genetically determined variability was found for ventricular rate and P-R interval. These findings suggest that heart rate and, to a lesser extent, atrial depolarization are under genetic control with 54% and 34%, respectively, of the variation among individuals explained by heredity.
AB - During a cardiovascular risk factor study, electrocardiograms were done on 355 sets of middle-aged male monozygotic and dizygotic twins. Potential genetic variability in ventricular rate and P-R, QRS, and Q-T duration was investigated using classical statistical twin methodology. Significant genetically determined variability was found for ventricular rate and P-R interval. These findings suggest that heart rate and, to a lesser extent, atrial depolarization are under genetic control with 54% and 34%, respectively, of the variation among individuals explained by heredity.
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U2 - 10.1016/S0022-0736(80)80008-2
DO - 10.1016/S0022-0736(80)80008-2
M3 - Article
C2 - 7188949
AN - SCOPUS:0018913049
VL - 13
SP - 45
EP - 48
JO - Journal of Electrocardiology
JF - Journal of Electrocardiology
SN - 0022-0736
IS - 1
ER -