Power spectral analysis of heart rate variability in Type As and Type Bs during mental workload.

Kamada, Toyohiko; Miyake, Shinji; Kumashiro, Masaharu; Monou, Hirokazu; Inoue, Kazuhiro

doi:10.1097/00006842-199207000-00008

Cited by 61 publications

(18 citation statements)

References 23 publications

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“…Evidence that anger can induce myo cardial ischemia by coronary vasoconstriction comes from a study which showed that anger ing an animal by food deprivation can consis tently produce myocardial ischemia and coro nary vasoconstriction in the immediate pos tanger period [147]. Another finding of im portance is that reduced vagal tone or high sympathetic activity, as measured by power spectral analysis of heart rate variability, has been shown in various studies to correlate with angiographic severity [148], risk of ven tricular fibrillation [149], type A behavior [150], and possibly depression [151].…”

Section: Psychiatric Risk Factors For Coronary Artery Diseasementioning

confidence: 99%

Review of Psychosomatic Aspects of Cardiovascular Disease

Littman

1993

Psychother Psychosom

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This review deals with the clinically most relevant psychosomatic aspects of cardiovascular disease. Smoking cessation, the role of physical activity in the prevention and rehabilitation of cardiac disease, the relationship of cholesterol to behavior, depression and heart disease, the pharmacotherapy of depression in this specific patient population, the psychiatric risk factors for coronary artery disease, and the treatment of hostility, stress and type A behavior are discussed.

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Section: Psychiatric Risk Factors For Coronary Artery Diseasementioning

confidence: 99%

Review of Psychosomatic Aspects of Cardiovascular Disease

Littman

1993

Psychother Psychosom

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“…However, a number of studies suggest that low frequency power (LFP) is a fair estimator of cardiac sympathetic influences (Friedman, Thayer, & Tyrell, 1996;Kamada et al, 1992;Bronis, 1983).…”

Section: Introductionmentioning

confidence: 99%

Autonomic characteristics of defensive hostility: Reactivity and recovery to active and passive stressors

Vella

Friedman

2007

International Journal of Psychophysiology

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Defensive hostility has been attributed as an early risk factor of coronary heart disease.The autonomic characteristics of high defensive, high hostile (HD) and low defensive, high hostile (LD) men and women were assessed with a variety of cardiovascular (CV) measures. Reactivity and recovery to an active laboratory stressor (video game, VG) and a passive laboratory stressor (hand cold pressor, CP) of 15 HD men, 16 LD men, 16 HD women, and 16 LD women were recorded. It was predicted that the CV patterning associated with the HD participants would display more sympathetic and less vagal control as well as the least pronounced recovery from the stressors in comparison to LD participants. Results revealed differential CV responses to the lab tasks by group. HD women displayed consistently high levels of low frequency power heart rate variability (HRV) during baseline and across conditions. HD men exhibited significantly pronounced heart rate reactivity and reduced high frequency power HRV to the CP task in comparison to LD men. Interestingly, LD women displayed weaker blood pressure (BP) recovery to the VG in comparison to HD women, whereas the opposite pattern was observed in BP recovery to the CP. These results suggest that defensiveness and sex may moderate the CV reactivity and recovery to different types of stressors in hostile participants.iii DEDICATION This thesis is dedicated most lovingly to my family, without whose encouragement, love, and support this project would not be possible.iv ACKNOWLEDGEMENTS

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“…Goldberger (1991) suggested that competing influences of both the sympathetic and the parasympathetic branches of the nervous system on the sinus node may be recorded as a type of chaotic heart-rate variability. In humans, this variability has often been determined by differentiating high-and low-frequency components of heart-rate fluctuations (Kamada et al 1992: Kunitake and Ishiko 1992; Murata et al 1992). Goldberger (1991) also suggested that the heart-rate variability may indicate the individual's state of health.…”

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confidence: 99%

Validation of a heart-rate monitor for measuring a stress response in dairy cows

Hopster¹,

Blokhuis²

1994

Can. J. Anim. Sci.

120

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. 1994. Validation of a heart-rate monitor for measuring a stress response in dairy cows.Can. J. Anim. Sci.,.In three experiments, a commercial non-invasive heart-rate monitor, Polar@ Sport Tester (PST), was validated for use with dairy cows. First, l0 monitors were tested using a pulse generator, which produced pulses at levels between 30 and240 bpm. PST values and generated beats were highly correlated (r : 0.97) but with varying delay (5-55 s), depending on pulse-rate level.In a second experiment, 10 dairy cows were quietly standing or exercising on a treadmill while their heart rates were recorded by direct-wire electrocardiograph (ECG) as well as the PST. Correlations between ECG and PST values during standing (0.88) and exercising (0.72) were significant and differed between cows. During standing, inter-beat interval and PST standard deviations were significantly correlated (R." : 0.76), as were their coefficients of variation (R,o : 0.89).The third experiment showed that the heart rate of 10 dairy cows increased rapidly immediately after an individual was isolated from the herd. Cows showed no obvious signs of being hampered by the equipment during the l-h trials.Change in heart rate may be a relevant parameter for studying an animal's response to a stressor. As heart-rate variability is thought to serve as an important mechanism for adaptability in humans, this aspect needs further attention in farm animals. The PST is suitable for measuring both heart rate and heart-rate variability in dairy cows.Key words: Heart rate, dairy cows, stress, treadmill

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Power spectral analysis of heart rate variability in Type As and Type Bs during mental workload.

Cited by 61 publications

References 23 publications

Review of Psychosomatic Aspects of Cardiovascular Disease

Review of Psychosomatic Aspects of Cardiovascular Disease

Autonomic characteristics of defensive hostility: Reactivity and recovery to active and passive stressors

Validation of a heart-rate monitor for measuring a stress response in dairy cows

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