Why the study?
Are prediabetes and type 2 diabetes associated with lower heart rate variability?
Are prediabetes and type 2 diabetes associated with lower heart rate variability?
Cardiac autonomic dysfunction, as indicated by lower heart rate variability, is already present in individuals with prediabetes.
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Lower HRV in prediabetes signals possible early autonomic dysfunction; supports monitoring but leaves causal links and interventions open.
Both prediabetes and type 2 diabetes were independently associated with lower HRV. This is further substantiated by independent continuous associations between measures of hyperglycemia and lower HRV. These data strongly suggest that cardiac autonomic dysfunction is already present in prediabetes.
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Coopmans et al. (2020) studied this question.
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