Why the study?
Does primary insomnia alter nocturnal heart rate and heart rate variability compared to healthy controls?
Does primary insomnia alter nocturnal heart rate and heart rate variability compared to healthy controls?
Primary insomnia is associated with blunted nocturnal heart rate reduction and altered heart rate variability, which may partially mediate the increased cardiovascular risk observed in these patients.
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May link insomnia to CV risk via autonomic changes; hypothesis-generating for longitudinal confirmation and targeted interventions.
Spiegelhalder et al. (2010) studied this question.
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