Long-term adaptation of 24-h heart rate variability after myocardial infarction

G. Mazzuero, P. Lanfranchi, R. Colombo, P. Giannuzzi, A. Giordano

Research output: Contribution to journalArticlepeer-review


To investigate the effects of physical training on neurovegetative profile of patients with previous anterior myocardial infarction (MI), we studied 38 patients out of the EAMI study at 4 to 6 weeks after anterior MI (test 1), who were then assigned randomly to a training group (n=22) or to a control group (n=16) and studied again 6 months later (test 2). Neurovegetative function was assessed by analyzing the heart-rate variability (HRV) of 24 h, from ambulatory ECG recording, both in time domain, as standard deviation of sinus rhythm RR intervals (sdRR) and percentage of differences >50 ms for successive sinus rhythm R-R intervals (pNN50), and in frequency domain, as low frequency (LF) and high frequency (HF) components of RR variability power spectrum. At test 1, HRV was almost in normal range or slightly decreased in few subjects. HRV increased on average at test 2: sdRR augmented significantly (p

Original languageEnglish
Issue number5 SUPPL.
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine


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