Spontaneous baroreflex sensitivity and its association with age, sex, obesity indices and hypertension: a population study.

Background: Low baroreflex sensitivity (BRS) was an established risk factor for cardiovascular disorders. We investigated determinants of BRS in a large sample from general population.

Methods: In a population-based study (n = 901), data were collected on BRS, arm cuff blood pressure (BP), and obesity indices including body mass index, waist-to-hip ratio, waist circumference, and percentage body fat (%BF).

Heritability and the Genetic Correlation of Heart Rate Variability and Blood Pressure in >29 000 Families: The Lifelines Cohort Study.

Dysregulation of the cardiac autonomic nervous system, as indexed by reduced heart rate variability (HRV), has been associated with the development of high blood pressure (BP). However, the underlying pathological mechanisms are not yet fully understood. This study aimed to estimate heritability of HRV and BP and to determine their genetic overlap.

Heritability and genetic correlations of obesity indices with ambulatory and office beat-to-beat blood pressure in the Oman Family Study.

Objective: To more precisely and comprehensively estimate the genetic and environmental correlations between various indices of obesity and BP.

Methods: We estimated heritability and genetic correlations of obesity indices with BP in the Oman family study (n = 1231). Ambulatory and office beat-to-beat BP was measured and mean values for SBP and DBP during daytime, sleep, 24-h and 10 min at rest were calculated.

Heritability and genetic and environmental correlations of heart rate variability and baroreceptor reflex sensitivity with ambulatory and beat-to-beat blood pressure.

This family study from Oman (n = 1231) explored the heritability and genetic and environmental correlations of heart rate variability (HRV) and baroreceptor reflex sensitivity (BRS) with ambulatory and beat-to-beat blood pressure (BP). Ambulatory BP was measured for 24 hours to calculate mean values for daytime and sleep separately. Time and frequency domain HRV indices, BRS, office beat-to-beat BP, and heart rate (HR) were measured for 10 minutes at rest.

Determinants of heart rate variability in the general population: The Lifelines Cohort Study.

Background: Heart rate variability (HRV) is an important marker of heart health, with low values reflecting reduced vagal control of the heart rhythm.

Objective: The purpose of this study was to investigate the extent to which a broad range of demographic (age, sex), lifestyle (physical activity, smoking, alcohol use), and psychosocial factors (stress, social well-being, neuroticism) explain individual differences in HRV in the general population.

Methods: Using baseline data of 10-second electrocardiograms from the Lifelines Cohort Study (n = 149,205; 58.

[The current epidemic situation and surveillance regarding hemorrhagic fever with renal syndrome in China, 2010].

Objective: To analyze the surveillance data on hemorrhagic fever with renal syndrome (HFRS) including the epidemiological characteristics and trend of the disease, in 2010.

Methods: Descriptive methods were conducted to analyze the surveillance data in 2010 which were collected from the internet-based National Notifiable Disease Reporting System and 40 HFRS sentinels in China.

Results: There were 9526 cases of HFRS reported in 2010 in the country with an annual morbidity of 0.