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This longitudinal study establishes a framework for evaluating the physiological impact of psychosocial changes in rehabilitated myocardial infarction survivors.
Twenty-one male, well-rehabilitated survivors of myocardial infarction participated in repeated observations during a period of 2 to 4 months on the same weekdays and hours of the day. The sum of the self-reportedlifechange units for the week prior to the observation was independently calculated by a psychologist. It was found that several subjects had experienced numerous psychosocial changes during the observation period. Hence, the experiment was suitable for the study of intrasubject variability of physiologic parameters in relation to psychosocial stimuli.
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Theorell et al. (1972) studied this question.
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