OBJECTIVES Derive activity and heart rate (HR) monitor-based clinically relevant measures for outpatient cardiac rehabilitation (CR). METHODS We are currently collecting activity/ECG data from patients undergoing cardiac rehabilitation over duration of six weeks. From these data sets, we a) derive various measures which can be used in assessing home-based CR patients remotely and b) investiga...

PURPOSE Various measures of autonomic function have been developed, and their applicability and significance during exercise are controversial. METHODS Physiological data were therefore obtained from 23 sport students before, during, and after exercise. Measures of R-R interval variability, QT variability index (QTvi), and electrodermal activity (EDA) were calculated. We applied an incrementa...

The research reported here was designed to explore the relationship between aversive visual stimuli and human physiological activity in a clssical conditioning situation. Specifically, the questions asked were (1) whether homicide pictures were effective stimuli in the classical conditioning of heart rate and electrodermal activity and (2) if conditioning occurred, what would be the form of the...

To investigate the physical activity patterns of British primary schoolchildren (mean (SD) 10.7 (0.3) years) the minute by minute heart rates of 67 boys and 65 girls were monitored continuously for three 12 hour periods during normal schooldays. In addition 39 children had their heart rates monitored during a 12 hour period on a Saturday. Few children experienced the volume (frequency, intensit...

We investigated seasonal variation in sleeping metabolic rate (SMR) and the possible relation to body composition, thyroid activity, and leptin. Twenty-five healthy volunteers were examined four times during the year: in spring (April, May), summer (July, August), autumn (October, November), and winter (January, February). Body composition was determined using a three-compartment model based on...

background: reduced level of physical activity, as an important problem of urbanization and industrial development, has a considerable impact on the population morbidity and mortality. the rate of inactivity has been reported to be 60-85% in adults worldwide. considering the importance of physical activity among youth, the aim of this study was to evaluate the physical activity among university...

We present the elements of a mathematical computational model that reflects the experimental finding that the time-scale of a neuron is not fixed; but rather varies with the history of its stimulus. Unlike most physiological models, there are no pre-determined rates associated with transitions between states of the system nor are there pre-determined constants associated with adaptation rates; ...

OBJECTIVE Epidemiological studies suggest that complex mental activity may reduce the risk for dementia, however an underlying mechanism remains unclear. Our objective was to determine whether individual differences in lifespan complex mental activity are linked to altered rates of hippocampal atrophy independent of global measures of neurodegeneration. METHODS Thirty seven healthy older indi...

introduction: insertion or deletion of a guanine in -1607 at promoter region of matrix metalloproteinase-1 enzyme creates two allelic types for this gene in the population: 2g and 1g, respectively. 2g allele contains an extra binding site for ets transcription factors that this may increase the level of gene expression. therefore, aim of this study was investigation of the single guanine insert...

background: central obesity and hyperinsulinaemia of polycystic ovary syndrome (pcos) are associated with chronic sympathetic over activity. objective: to evaluate the autonomic functions and to indicate the superiority, if any, for those functions in the diagnosis of sympathetic over activity in pcos women. materials and methods: sixty-four pcos patients and 40 women served as the control grou...