Heart rate regulationSensitivity analysisIn this study we describe a model predicting heart rate regulation during postural change from sitting to standing and during head-up tilt in five healthy elderly adults. The model uses blood pressure as an input to predict baroreflex firing-rate, which in ...
In this study we describe a model predicting heart rate regulation during postural change from sitting to standing and during head-up tilt in five healthy elderly adults. The model uses blood pressure as an input to predict baroreflex firing-rate, which in turn is used to predict efferent paras...
The clinical use of Heart Rate Variability (HRV) as a measure of a person's health has been limited since data from comparable cohorts often yield inconsistent results. This study was designed to gain a better understanding of the stability and reproducibility of human HRV over a period of sev...
Body position. Sometimes, when going from sitting to standing, your pulse may go up a little. After a few minutes, it should return to a typical rate. Emotions. If you're stressed, anxious or incredibly happy, your emotions can raise your heart rate. Body size. Body size usually does n...
Measuring postural changes is among the simplest methods to elicit basic cardiovascular responses from patients who should not be subjected to treadmill stress testing. We attempted to clarify the individual factors that may affect these changes in resting heart rate (HR).In a cross-sectional study,...
(if applicable), time of the day, device used, body position (sitting, standing, and supine), measurement length, breathing control, smallest worthwhile change (SWC) or reference criterion (fixed or moving), number of average values (if applicable), and criteria for modifying training in the ...
This study showed marked fluctuation of the HRV parameters during 50 min recording in a sitting position, with a significant change after 20 min. As expected, HRV parameters showed low absolute reliability and substantial to excellent relative reliability. The main motivation for this study was to ...
Standing up.It might spike for about 20 seconds when you stand up after sitting for a while. Emotions.Stress and anxiety can raise your heart rate. It may also go up when you’re very happy or sad. Body size.People with obesity can have a slightly faster pulse. ...
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We found that the HR increased during periods of increased activity (walking) and was lowest during lying, while it did not differ between sitting and standing. At the same time no changes in HRV were found in the case of different body positions and walking. In contrast, HRV significantly ...