Key result
Resting heart rate increase ≥5 bpm linked to ~22% higher incident diabetes risk in women.
Why the study?
To investigate sex-specific associations between time-varying resting heart rate and change in resting heart rate over time and the risk of diabetes mellitus.
Does time-varying resting heart rate and its change over time predict the incidence of diabetes mellitus in adults without baseline diabetes?
Cohort (n=8,313)
Does time-varying resting heart rate and its change over time predict the incidence of diabetes mellitus in adults without baseline diabetes?
Elevated time-varying resting heart rate is associated with an increased risk of incident diabetes mellitus, with sex-specific differences in the risk associated with changes in heart rate over time.
Suggests resting heart rate trajectories may serve as a sex-specific risk marker for incident diabetes.
BACKGRUOUND: To investigate the association between the time-varying resting heart rate (RHR) and change in RHR (∆RHR) over time and the risk of diabetes mellitus (DM) by sex. METHODS: We assessed 8,392 participants without DM or atrial fibrillation/flutter from the Korean Genome and Epidemiology Study, a community-based prospective cohort study that was initiated in 2001 to 2002. The participants were followed up until December 31, 2018. Updating RHR with biennial in-study re-examinations, the time-varying ∆RHR was calculated by assessing the ∆RHR at the next follow-up visit. RESULTS: Over a median follow-up of 12.3 years, 1,345 participants (16.2%) had DM. As compared with RHR of 60 to 69 bpm, for RHR of ≥80 bpm, the incidence of DM was significantly increased for both male and female. A drop of ≥5 bpm in ∆RHR when compared with the stable ∆RHR group (-5< ∆RHR <5 bpm) was associated significantly with lower risk of DM in both male and female. However, an increase of ≥5 bpm in ∆RHR was significantly associated with higher risk of DM only in female, not in male (hazard ratio for male, 1.057 [95% confidence interval, 0.869 to 1.285]; and for female, 1.218 [95% confidence interval, 1.008 to 1.471]). CONCLUSION: In this community-based longitudinal cohort study, a reduction in ∆RHR was associated with a decreased risk of DM, while an increase in ∆RHR was associated with an increased risk of DM only in female.
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Son et al. (2024) conducted a cohort in Diabetes Mellitus (n=8,313). Increase of ≥5 bpm in resting heart rate (ΔRHR) vs. Stable ΔRHR (-5 < ΔRHR < 5 bpm) was evaluated on Incidence of diabetes mellitus (associated with ≥5 bpm increase in ΔRHR in females) (HR 1.218, 95% CI 1.008 to 1.471, p=0.041). An increase in resting heart rate of ≥5 bpm was significantly associated with an increased risk of incident diabetes mellitus in women (HR 1.218), but not in men.
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