ArticleIrish journal of medical science2026
Comparative impact of body shape index and body mass index on heart rate variability in healthy young adults: A 24-hour electrocardiographic analysis.
Article in Irish journal of medical science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimsWe aimed to investigate the relationship between heart rate variability (HRV) and two anthropometric obesity parameters among young adults, including body shape index (ABSI) and body mass index (BMI).
methodsWe included 215 asymptomatic individuals aged 18-40 years who presented for routine health screening and had no history of structural heart disease or chronic illness. Anthropometric measurements and time-domain HRV parameters (SDNN, SDNN index, rMSSD, pNN50%) were recorded through 24-h ECG monitoring. Participants were divided into ABSI and BMI categories: low-moderate ABSI (≤ 0.079), high ABSI (> 0.079), BMI < 30 kg/m
results67% of the study participants were female, and the mean age was 28.5 ± 8. We found a relationship between waist circumference, BMI, and certain HRV parameters. However, all investigated time-domain HRV parameters were similar between the ABSI groups, suggesting that ABSI may not reflect autonomic function as effectively as BMI among adults aged < 40 years. Nevertheless, the SDNN, SDNN index, rMSSD, and pNN50% values were significantly lower in the BMI ≥ 30 group than in the BMI < 30 group (p < 0.05). Linear regression analysis revealed significant inverse associations between BMI and all time-domain HRV parameters; however, no significant association was observed between ABSI and any time-domain HRV parameter.
conclusionsWaist circumference and BMI are inversely related to HRV parameters in young adults. The absence of this association with ABSI suggests that BMI remains a more relevant anthropometric measure of cardiac autonomic modulation in this population.
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