Cardiometabolic & kidney

Effect of an intensive lifestyle intervention on the structural and functional substrate for atrial fibrillation in people with metabolic syndrome

Eur J Prev CardiolPublished Secondary analysis of the PREvención con DIeta MEDiterranea-Plus randomised trial

Authors' conclusion

In overweight or obese people with Mets, an ILI had no impact on the underlying structural and functional LA substrate measurements associated with AF risk.

Study context

Population
Overweight or obese people with metabolic syndrome (echocardiography subsample; mean age 65 years, 40% women)trial n = 6874
Participants
534 participants
Comparison
Intensive lifestyle intervention (ILI) vs control intervention
Primary endpoint
LA structure and function (LA emptying fraction, LA longitudinal strain)
Follow-up
5 years
Methodological detailscore echocardiography lab, mixed models
  • Core echocardiography lab
  • Mixed models

Primary result

As reported in the abstract

GroupLeft atrial (LA) emptying fractionLA longitudinal strain
Control−0.95% (95% CI −0.93, −0.98)0.82% (95% CI 0.79, 0.85)
ILI−0.97% (95% CI −0.94, −1.00)0.85% (95% CI 0.82, 0.89)

Left atrial (LA) emptying fraction

Control−0.95% (95% CI −0.93, −0.98)
ILI−0.97% (95% CI −0.94, −1.00)

LA longitudinal strain

Control0.82% (95% CI 0.79, 0.85)
ILI0.85% (95% CI 0.82, 0.89)
  • ILI vs Control: Pbetween groups = 0.80 — LA emptying fraction
  • ILI vs Control: Pbetween groups = 0.24 — LA longitudinal strain

Secondary outcomes

Mean, kg

OutcomeILIControl
Weight change · 5 years−3.9 (SD 5.3 kg)−0.3 (SD 5.1 kg)

Secondary LA outcomes

No significant difference between groups for any secondary outcome

Original publication

Effect of an intensive lifestyle intervention on the structural and functional substrate for atrial fibrillation in people with metabolic syndrome. Eur J Prev Cardiol. Published 15 December 2023. doi:10.1093/eurjpc/zwad380

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