Abstract Phylogenetic theories suggest resting vagally mediated heart rate variability (vmHRV) as a biomarker for adaptive behavior in social encounters. Until now, no study has examined whether vmHRV can predict individual differences inferring personality traits and intentions from facial appearance. To test this hypothesis, was recorded 83 healthy individuals before they rated series of face...

BACKGROUND Youth violence is a major global public health problem. Three UK and Swedish studies suggest that low resting heart rate predicts male youth violence, but this has not been tested in other social settings nor for females. METHODS A prospective, population-based birth cohort study was conducted in Pelotas, Brazil. Heart rate was measured using a wrist monitor at ages 11, 15 and 18 y...

The influence of vagotomy on resting vagal tone arterial Po2, the heart rate and blood pressure responses to different grades of hypoxia was studied in three species of anesthetized animals. Vagotomy without hypoxia produced a sustained increase in heart rate of dogs but not in rabbits or sheep. In the dogs, where this was studied more fully, heart rate showed sustained increase over several ho...

OBJECTIVE To evaluate resting heart rate as an independent predictor of cardiovascular risk in women. DESIGN Prospective cohort study. SETTING The Women's Health Initiative was undertaken at 40 research clinics in the United States. PARTICIPANTS 129 135 postmenopausal women. MAIN OUTCOME MEASURE Clinical cardiovascular events. RESULTS During a mean of 7.8 (SD 1.6) years of follow up, ...

[Purpose] The purpose of this study was to investigate the effects of aerobic exercise on the resting heart rate, physical fitness, and arterial stiffness or female patients with metabolic syndrome. [Subjects and Methods] Subjects were randomly assigned to an exercise group (n=12) or a control group (n=11). Subjects in the exercise group performed aerobic exercise at 60-80% of maximum heart rat...

BACKGROUND Resting ischemic electrocardiographic abnormalities have been associated with cardiovascular mortality. Simple markers of abnormal autonomic tone have also been associated with diabetes, obesity, and the metabolic syndrome in some populations. Data on these electrocardiographic abnormalities and correlations with coronary risk factors are lacking among Mexican Americans wherein these...

background: in order to fit the job physiologically to the worker, understanding of acceptable work load is very important. this study was conducted to estimate energy expenditure during the work and associated factors among male workers of a steel industry. methods: in this cross-sectional study, 100 male workers employed in foolad payeh fars with dynamic job participated voluntarily. data col...

BACKGROUND Obesity is associated with hypertension (HT) and high resting heart rate (HR), as well as metabolic disturbances. However, little is known about how strongly these hemodynamic abnormalities are associated with the degree of obesity in adolescents. METHODS AND RESULTS Height, body weight, resting HR, and systolic and diastolic blood pressures were measured in 20,165 male and 19,683 ...

BACKGROUND AND AIM The imbalance between sympathetic and parasympathetic activity is one of the important factors in pathogenesis of cardiovascular diseases (CVD). There is a relationship between sympathetic activity and some CVD risk factors. Also heart rate (HR) is related to the autonomic nervous system. We analysed the relation of mean resting HR to hypertension, diabetes, obesity and to so...