personal equation- variability attributable to individual differences invariableness,invariance,invariability- the quality of being resistant to variation 2.variability- the quality of being uneven and lacking uniformity unevenness unregularity,irregularity- not characterized by a fixed principle or rate; at ...
heart rate variabilityThe goal of the study was to develop methods for estimating the anaerobic threshold from the rate of lung ventilation and heart rate variability during bicycle ergometer and treadmill tests with a stepwise increasing load. At the first stage, the method of estimation of the ...
This physiological phenomenon is known asHeart Rate Variability(HRV). As the name suggests, it measures (in milliseconds) the interval between consecutive heartbeats, tracking the variation. Even a healthy, stable heart will vary substantially between beats. Surprisingly, a high HRV score is a sign...
The Heart rate variability (HRV) is a non-invasive index of the neural control of the heart. HRV can be quantified by the simple calculation of the standard deviation of the R-R intervals. Furthermore, in the frequency domain, spectral analysis of HRV reveals three distinct frequency regions ...
rate and the resulting atrial rate with spectral estimation techniques15, and baroreflex gain from spontaneous variability using a causal parametric model16; the prediction of blood pressure rhythm based on a baroreflex model of first-order differential-delay equation17; the analysis of the influence ...
Heart rate variability (HRV) signal has been captured and analyzed for this purpose. Two types of data sources have been used, the Physionet 1 and our own data bank, collected by our own instrument. The popular Shannon entropy has been used to measure the complexity of each signal collected...
In the last three decades, the analysis of heart rate variability by nonlinear methods demonstrated the complexity of cardiovascular regulation. Additionally to the observations of periodic heart rate regulation by the autonomic nervous system, the long-term statistics of the heart rate has been determi...
This equation represents a complex interaction between age, gender, cholesterol status, blood pressure, diabetes status, and smoking. Heart rate variability (HRV) is a measure of how the autonomic nervous system (ANS) modulates the heart rate. HRV measures are sensitive to age, gender, disease ...
Heart rate variability before induction of anaesthesia (Pre) and before tetanic stimulation of the ulnar nerve (after induction, under stable anaesthetic conditions, Post). Numbers are median (inter-quartile range). LF power, low-frequency power of RRI variability (0.04–015 Hz); HF power, high...
Heart rate maximum = 192 - (0.007 × age²) We chose this formula because it is one of the most accurate formulas around. To compare, the commonly used Haskell & Fox equation, Heart rate maximum = 220 - age, was, according to one of its creators, "never supposed to be an absolute...