Why the study?
Does behavior pattern A or the presence of clinical coronary heart disease affect average daily heart rate compared to behavior pattern B or functional cardiovascular disease?
Does behavior pattern A or the presence of clinical coronary heart disease affect average daily heart rate compared to behavior pattern B or functional cardiovascular disease?
Overt behavior pattern A, despite its association with coronary disease, does not appear to alter average daily heart rate compared to pattern B.
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Behavior pattern A does not appear to alter daily heart rate; leaves open whether heart rate mediates its coronary risk association.
Friedman et al. (1963) studied this question.
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