Why the study?
Does aging influence the diurnal variations of electrocardiographical RR, PQ, QRS, and QT intervals in healthy subjects?
Does aging influence the diurnal variations of electrocardiographical RR, PQ, QRS, and QT intervals in healthy subjects?
In healthy subjects, RR, PQ, and QT intervals exhibit significant diurnal variation influenced by autonomic tone, whereas QRS and QT intervals prolong with aging.
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Hiroshi Yoshikawa (1988) studied this question.
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