Results 231 to 240 of about 325,226 (263)

Measurement of Heart Rate Variability

Western Journal of Nursing Research, 1995
Heart rate variability (HRV) is a measure of autonomic nervous system balance/imbalance. Measurement and analysis of HRV can be classified into time domain analysis and frequency domain analysis. lime domain analysis is a general measure of autonomic nervous system balance and is based on altered versions of the measurement of the standard deviation of
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Heart rate variability and sports

Human Physiology, 2016
The article presents a review of the literature and some of their own data on the problem of the possibilities of using the method of the study of heart rate variability in the practice of sports and sports Miedicine.
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Analysis of Heart Rate Variability

Ergonomics, 1973
Spontaneous variability of heart-rate has been related to three major physiological originating factors: quasi-oscillatory fluctuations thought to arise in blood-pressure control, variable frequency oscillations due to thermal regulation, and respiration; frequency selective analysis of cardiac interbeat interval sequences allows the separate ...
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The Effects of Specific Respiratory Rates on Heart Rate and Heart Rate Variability

Applied Psychophysiology and Biofeedback, 2003
In this study respiratory rates of 3, 4, 6, 8, 10, 12, and 14 breaths per minute were employed to investigate the effects of these rates on heart rate variability (HRV). Data were collected 16 times at each respiratory rate on 3 female volunteers, and 12 times on 2 female volunteers.
Hye-Sue, Song, Paul M, Lehrer
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Heart Rate Variability

Psychosomatic Medicine, 2021
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Heart Rate Variability

Journal of Cardiovascular Electrophysiology, 2006
Kenneth C, Bilchick, Ronald D, Berger
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HEART-RATE VARIABILITY

The Lancet, 1977
A J, Mearns, D A, Brodie, G D, Unsworth
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EFFECTS OF DEPTH AND RATE OF BREATHING ON HEART RATE AND HEART RATE VARIABILITY

Psychophysiology, 1971
ABSTRACTEffects of depth and rate of breathing on heart rate (HR) and HR variability were observed in two experiments. Respiration rate (RR) affected only cardiac stability, faster breathing producing more stable cardiac rate. Respiration depth (RD) affected both HR level and variability.
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Exercise and heart rate variability

American Heart Journal, 1996
A H, Lazoglu, B, Glace, G W, Gleim, N L, Coplan   +3 more
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A meta-analysis of heart rate variability and neuroimaging studies: Implications for heart rate variability as a marker of stress and health

Neuroscience and Biobehavioral Reviews, 2012
Julian Thayer, Tor Wager, Fredrik Ahs
exaly