Association Between Modifiable Lifestyle Factors and Incident Cardiac Conduction Disease.

BACKGROUND

The associations between modifiable lifestyles and cardiac conduction disease (CCD) are poorly studied.

OBJECTIVES

This study aimed to prospectively assess the association between modifiable lifestyle factors and incident CCD.

METHODS

A total of 89,377 participants (aged 18-90 years) free of CCD at baseline were enrolled in the Kailuan cohort. Lifestyle factors, including smoking, alcohol consumption, physical activity, sedentary behavior, and nighttime sleep duration, were collected to test the relations of both baseline and long-term lifestyle factors with incident CCD.

RESULTS

During 1,226,634.1 person-years of follow-up (median: 14.1 years; Q1-Q3: 13.8-14.2 years), 3,723 CCD cases (3.04 per 1,000 person-years; 95% CI: 2.94-3.13 person-years) were identified. Compared with the participants who had healthy lifestyles at baseline, the adjusted HRs for participants who consumed alcohol ≥5 drinks per day, had sedentary behavior ≥4 hours per day, and had night sleep ≥9 hours per day were 1.16 (95% CI: 1.04-1.32), 1.12 (95% CI: 1.03-1.22), and 1.32 (95% CI: 1.02-1.68), respectively. Furthermore, compared with the participants adhered to long-term healthy lifestyles, the adjusted HRs for participants who chronically consumed alcohol ≥5 drinks per day, had sedentary behavior ≥4 hours per day, and had night sleep ≥9 hours per day were 2.16 (95% CI: 1.68-2.79), 1.77 (95% CI: 1.50-2.09), and 1.67 (95% CI: 1.25-2.24), respectively.

CONCLUSIONS

The study revealed excessive alcohol consumption, high sedentary behavior, and longer sleep duration were associated with higher risks of CCD in adults. The findings supported the beneficial impact of a low-risk lifestyle on the primary prevention of CCD.