Spectral Analysis of Stress-Induced Change in Blood Pressure and Heart Rate in Normotensive Subjects

Grillot, M; Fauvel, Jean Pierre; Cottet-Émard, J. M.; Laville, Maurice; Peyrin, L; Pozet, N; Zech, P

doi:10.1097/00005344-199503000-00015

Cited by 19 publications

(11 citation statements)

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“…The sympathetic stimulation was elicited by use of a computerized version of the CWT that involved sensory rejection and that has been used as a model of defense reaction in humans. 19 The CWT provoked a steady and reproducible increase in HR and BP associated with an increase in plasma catecholamines 10 and in muscle sympathetic nerve activity. 20 However, because BP increase was not related to catecholamine release, 10 these indices were not determined in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…19 The CWT provoked a steady and reproducible increase in HR and BP associated with an increase in plasma catecholamines 10 and in muscle sympathetic nerve activity. 20 However, because BP increase was not related to catecholamine release, 10 these indices were not determined in the present study. The magnitude of the stress-induced increase in SBP (22.4 mm Hg) confirmed that our version of the CWT provided a major sympathetic stimulation.…”

Section: Discussionmentioning

confidence: 99%

“…The sympathetic stimulation was elicited by use of a computerized version of the Stroop word color conflict stress test (CWT), which has been reported to provoke a steady and reproducible increase in HR and BP 9 that is associated with an increase in plasma catecholamines. 10 BP was recorded by means of a Finapres device (model 2300, Ohmeda), which has previously been validated as a reliable method to study beat-to-beat BP variability. 11 Indices of spontaneous variability were assessed by use of standard deviation and spectral analysis of beat-to-beat noninvasive recordings of BP [12][13][14] signals in Mayer's and respiratory frequency bands.…”

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confidence: 99%

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Mental Stress–Induced Increase in Blood Pressure Is Not Related to Baroreflex Sensitivity in Middle-Aged Healthy Men

Fauvel¹,

Cerutti²,

Quelin³

et al. 2000

Hypertension

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Abstract-The baroreflex that acts to blunt blood pressure (BP) variations through opposite variations in heart rate should limit the BP increase produced by an emotional challenge. However, relations between baroreflex sensitivity and BP reactivity induced by a psychological stress in a large group of adults have never been firmly established. In 280 healthy men, rest (10 minutes) and stress (5 minutes) BP and heart rate were recorded beat to beat by a blood pressure monitor. The mental stress was elicited by a well-standardized computerized version of a word color conflict stress test (Stroop Color Test). Rest and stress baroreflex sensitivity was assessed by the cross-spectral analysis of BP and heart rate and by the sequence method. The stress-induced increase in systolic BP (22.4Ϯ0.1 mm Hg) was not correlated with resting baroreflex sensitivity but was slightly correlated (rϭ0.2, PϽ0.001) with BP variability assessed either by standard deviation or by mid-frequency band spectral power. Our results suggested that a centrally mediated sympathetic stimulation overcame cardiac autonomic regulation and emphasized the role of the sympathetic vasoconstriction in the pressure response at the onset of the stressing stimulation. During the sustained sympathoexcitatory phase, the cardiac baroreflex blunts BP variations but at a lower sensitivity. Key Words: baroreflex Ⅲ blood pressure Ⅲ men Ⅲ spectral analysis Ⅲ stress, mental B lood pressure (BP) reactivity to stress was reported to be associated with an unfavorable cardiovascular risk profile in men 1 and to be predictive of future hypertension 2 and carotid atherosclerosis in women. 3 Furthermore, a depressed baroreflex sensitivity (BRS) was significantly associated with bad cardiovascular prognosis. 4 The baroreflex, which acts to blunt BP variations through opposite variations in heart rate (HR), should limit BP increase to an emotional challenge. Parati et al 5 reported that BP variability in humans after atropine administration was decreased at rest but was increased during a physical challenge. Thus, BP reactivity to challenge may not be related to BP regulation in resting conditions. However, to our knowledge, no study has investigated relations between resting cardiac BRS and BP response during a sympathetic stimulation induced by a psychological stress in a large group of adults. Therefore, the present study aimed to clarify relations that could exist between sympathetically induced increases in BP and HR and indices of cardiac autonomic control, including BRS, in a large sample of normotensive men. Furthermore, because BRS variation during stress is controversial, 6 -8 the second purpose of the present study was to investigate BRS variations during a well-standardized mental stress. This study was carried out by using techniques developed in our laboratory. The sympathetic stimulation was elicited by use of a computerized version of the Stroop word color conflict stress test (CWT), which has been reported to provoke a steady and reproducible increase in HR ...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Mental Stress–Induced Increase in Blood Pressure Is Not Related to Baroreflex Sensitivity in Middle-Aged Healthy Men

Fauvel¹,

Cerutti²,

Quelin³

et al. 2000

Hypertension

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“…During unpleasant sensation, that is, under cybersickness, HF power is expected to decrease and LF power to increase due to the stressful situation [29]. Although visual stimuli in our experiments have been weak, we empirically set up the ANA-related conditions regarding LF120 and HF80 to extract cybersickness intervals around specific scenes in which participants reported unpleasant sensations.…”

Section: Cybersickness Intervals and Trigger Pointsmentioning

confidence: 99%

Time–frequency structure of image motion vectors around cybersickness intervals determined with biosignals

et al. 2008

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“…found that in subjects in supine position, a 10‐min Stroop task led to an increase in 0.07–0.14 Hz variability and in systolic pressure (31 mmHg, 25%) accompanied by significant increases in plasma epinephrine and norepinephrine. Moreover, the increases in blood pressure variability and epinephrine were significantly correlated ( r = .69) (Grillot et al., ).…”

Section: Discussionmentioning

confidence: 99%

Effects of aerobic conditioning on cardiovascular sympathetic response to and recovery from challenge

et al. 2013

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Objective Exercise has widely-documented cardioprotective effects but the mechanisms behind these effects are still poorly understood. Here, we test the hypothesis that aerobic training lowers cardiovascular sympathetic responses to and speeds recovery from challenge. Methods We conducted a randomized controlled trial contrasting aerobic versus strength training on indices of cardiac (pre-ejection period, PEP) and vascular (low-frequency blood pressure variability, LF-BPV) sympathetic responses to and recovery from psychological and orthostatic challenge in 149 young, healthy and sedentary adults. Results Aerobic and strength training did not alter PEP or LF-BPV reactivity to or recovery from challenge. Conclusions These findings, from a large randomized controlled trial using an intent-to-treat design, show that moderate aerobic exercise training has no effect on PEP and LF BPV reactivity to or recovery from psychological or orthostatic challenge. In healthy young adults, the cardioprotective effects of exercise training are unlikely to be mediated by changes in sympathetic activity.

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Spectral Analysis of Stress-Induced Change in Blood Pressure and Heart Rate in Normotensive Subjects

Cited by 19 publications

References 0 publications

Mental Stress–Induced Increase in Blood Pressure Is Not Related to Baroreflex Sensitivity in Middle-Aged Healthy Men

Mental Stress–Induced Increase in Blood Pressure Is Not Related to Baroreflex Sensitivity in Middle-Aged Healthy Men

Time–frequency structure of image motion vectors around cybersickness intervals determined with biosignals

Effects of aerobic conditioning on cardiovascular sympathetic response to and recovery from challenge

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