Key result
Healthy sleep in post-AMI patients is linked to higher HRV.
Why the study?
Sleep is a core component of cardiovascular health and predictive of adverse outcomes after AMI, but links between sleep patterns, HRV, and traditional cardiovascular risk factors needed assessment.
Are sleep patterns associated with cardiac autonomic function and physical activity levels in male patients following acute myocardial infarction?
Observational (n=60)
Are sleep patterns associated with cardiac autonomic function and physical activity levels in male patients following acute myocardial infarction?
Healthy sleep quality and quantity are associated with higher heart rate variability and increased physical activity in male patients recovering from acute myocardial infarction.
Answers are grounded in this paper and cite their sources.
Sleep quality linked to higher HRV post-AMI; leaves open whether interventions improve autonomic recovery or activity.
BACKGROUND: Monitoring lifestyle habits and physiological metrics are essential for improving cardiovascular outcomes and supporting recovery after acute cardiac events. Sleep is acknowledged as a core component of cardiovascular health and a predictive tool of adverse outcomes following acute myocardial infarction (AMI). OBJECTIVE: The present study aimed to assess sleep metrics and explore the links between sleep patterns, heart rate variability (HRV) parameters, and traditional cardiovascular risk factors in patients with AMI. METHODS: Sixty male patients with AMI (56.77 ± 8.24 years) participated in this study. Cardiac autonomic function was assessed with short-term HRV analysis during the second week post-AMI. Physical activity level was assessed using accelerometers. Sleep quality and quantity were evaluated objectively using a wrist-worn accelerometer and subjectively by the Pittsburgh Sleep Quality Index. Chronotype was evaluated with the Horne and Otsberg questionnaire. RESULTS: Twenty post-AMI patients (33.3%) tended to experience poor sleep quality, with a sleep efficiency inferior to 85%. Thirty patients (50%) experienced short sleep duration, 16 (26.7%) had a healthy sleep duration (7-8 h), and 14 (23.3%) slept more than 8 h. Multiple regression analysis revealed that patients with healthy sleep quality and quantity exhibited higher HRV parameters, both in time and frequency domain values (p < 0.05). Low physical activity level was observed in patients with long sleep duration (p = 0.005) and evening chronotype (p = 0.022). CONCLUSION: Patients who spent more time performing moderate to vigorous physical activity tended to exhibit good sleep health and increased parasympathetic activity which are considered cardioprotective after AMI. TRIAL REGISTRATION: PACTR202208834230748.
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Hbaieb et al. (2025) conducted an observational in Acute Myocardial Infarction (AMI) (n=60). Sleep patterns and physical activity was evaluated on Links between sleep patterns, heart rate variability (HRV) parameters, and traditional cardiovascular risk factors (p=<0.05). Healthy sleep quality and quantity in post-AMI patients were associated with higher heart rate variability parameters (p < 0.05), while long sleep duration correlated with low physical activity.
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