RESUMO
Objective: To investigate the impact of improved AHA cardiovascular health behavior score (CHS) on short-time systemic blood pressure variability (SBPV) in elder population. Methods: A total of 2464 participants ≥ 60 years from 3 hospitals of Kailuan area were taken for cohort study. The participants had no cardiovascular disease, not taking anti-psychotic drug, Parkinson treatment drug, anti-depression drug and analgesic drug within 2 weeks. All participants received 24-hour ambulatory blood pressure monitoring (ABPM) and the 24-hour, day-time, night-time SBPV were deifned by the standard deviation of 24-hour, day-time, night-time systolic blood pressure. The influence of CHS on SBPV was studied by multi-linear regression analysis. Improved cardiovascular health behavior and factors implied as changing the vegetable intake amount to salt amount by American Humane Association, 2010; boundary of BMI based on《Guidelines for prevention of overweight and obesity in Chinese adults》; status of exercise was deifed as the ideal status: ≥80 min/week, general status: Results: Finally, 1812 participants were recruited for survey and they were divided into 3 groups according to improved CHS: Group①, CHS (0-4) points,n=56, Group②, CHS (5-9) pointsn=1600 and Group③, CHS (10-14) points,n=156. The 24-hour SBPV in Groups①,②and③were 16.02 mmHg, 14.91 mmHg and 13.18 mmHg; day-time SBPV were 15.42 mmHg, 14.50 mmHg and 13.22 mmHg; night-time SBPV were 12.68 mmHg, 11.44 mmHg and 10.16 mmHg, allP Conclusion: CHS was negatively related to short-time SBPV in elder population.