Effect of Heart Rate Variability on Defensive Reaction and Eating Disorder Symptomatology in Chocolate Cravers

2009 ◽  
Vol 23 (3) ◽  
pp. 95-103 ◽  
Author(s):  
Sonia Rodríguez-Ruiz ◽  
Elisabeth Ruiz-Padial ◽  
Nieves Vera ◽  
Carmen Fernández ◽  
Lourdes Anllo-Vento ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Eating Disorder ◽  
Eating Behavior ◽  
Rest Period ◽  
Food Craving ◽  
Defensive Reaction ◽  
Relevant Role ◽  
Eating Disorder Symptomatology ◽  
Uncontrolled Eating

The study examines the effect of heart rate variability (HRV) on the cardiac defence response (CDR) and eating disorder symptomatology in chocolate cravers. Female chocolate cravers (n = 36) and noncravers (n = 36) underwent a psychophysiological test to assess their HRV during a 5-min rest period, followed by three trials to explore the CDR, elicited by an intense white noise, during the viewing of chocolate, neutral, and unpleasant pictures. After the test, participants completed a questionnaire to measure eating disorder symptomatology. The HRV was inversely related to the magnitude of the CDR and to eating disorder symptomatology in chocolate cravers. In addition, the HRV was inversely related to the magnitude of the CDR when viewing unpleasant pictures but not to neutral or chocolate ones, across all participants. These findings support the idea that poor autonomic regulation, indexed by low HRV, plays a relevant role in food craving and uncontrolled eating behavior.

Nonlinear dynamics of heart rate variability during experimental hemorrhage in ketamine-anesthetized rats

2000 ◽  
Vol 279 (4) ◽  
pp. H1669-H1678 ◽  
Author(s):  
James E. Skinner ◽  
Brian A. Nester ◽  
William C. Dalsey
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dimensional Reduction ◽  
Deterministic Model ◽  
Rabbit Heart ◽  
Model System ◽  
Autonomic Response ◽  
Defensive Reaction ◽  
Arrhythmic Death ◽  
System Variables

Indexes of heart rate variability (HRV) based on linear stochastic models are independent risk factors for arrhythmic death (AD). An index based on a nonlinear deterministic model, a reduction in the point correlation dimension (PD2 i), has been shown in both animal and human studies to have a higher sensitivity and specificity for predicting AD. Dimensional reduction subsequent to transient ischemia was examined previously in a simple model system, the intrinsic nervous system of the isolated rabbit heart. The present study presents a new model system in which the higher cerebral centers are blocked chemically (ketamine inhibition of N-methyl-d-aspartate receptors) and the system is perturbed over a longer 15-min interval by continuous hemorrhage. The hypothesis tested was that dimensional reduction would again be evoked, but in association with a more complex relationship between the system variables. The hypothesis was supported, and we interpret the greater response complexity to result from the larger autonomic superstructure attached to the heart. The complexities observed in the nonlinear heartbeat dynamics constitute a new genre of autonomic response, one clearly distinct from a hardwired reflex or a cerebrally determined defensive reaction.

scholarly journals Getting to the heart of food craving with resting heart rate variability in adolescents

Appetite ◽  
2020 ◽  
Vol 155 ◽  
pp. 104816
Author(s):  
Jia Wu ◽  
Camila Pierart ◽  
Tara M. Chaplin ◽  
Rebecca E. Hommer ◽  
Linda C. Mayes ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Food Craving ◽  
Resting Heart Rate ◽  
Resting Heart Rate Variability

scholarly journals The Effect of Live Spontaneous Harp Music on Patients in the Intensive Care Unit

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Ann Marie Chiasson ◽  
Ann Linda Baldwin ◽  
Carrol Mclaughlin ◽  
Paula Cook ◽  
Gulshan Sethi
Keyword(s):  
Blood Pressure ◽  
Intensive Care Unit ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Intensive Care ◽  
Oxygen Saturation ◽  
Respiratory Rate ◽  
Rest Period ◽  
Underlying Mechanism ◽  
To Receive

This study was performed to investigate the effect of live, spontaneous harp music on individual patients in an intensive care unit (ICU), either pre- or postoperatively. The purpose was to determine whether this intervention would serve as a relaxation or healing modality, as evidenced by the effect on patient’s pain, heart rate, respiratory rate, blood pressure, oxygen saturation, and heart rate variability. Each consenting patient was randomly assigned to receive either a live 10-minute concert of spontaneous music played by an expert harpist or a 10-minute rest period. Spontaneous harp music significantly decreased patient perception of pain by 27% but did not significantly affect heart rate, respiratory rate, oxygen saturation, blood pressure, or heart rate variability. Trends emerged, although being not statistically significant, that systolic blood pressure increased while heart rate variability decreased. These findings may invoke patient engagement, as opposed to relaxation, as the underlying mechanism of the decrease in the patients’ pain and of the healing benefit that arises from the relationship between healer, healing modality, and patient.

Food Intake and Heart Rate Variability: Toward a Momentary Biopsychosocial Understanding of Eating Behavior

2011 ◽  
pp. 845-863
Author(s):  
Hiroe Kikuchi ◽  
Kazuhiro Yoshiuchi ◽  
Ken Ohashi ◽  
Fumiyo Sato ◽  
Yoshiyuki Takimoto ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Food Intake ◽  
Eating Behavior

Heart Rate Variability Modulates Eye-Blink Startle in Women With Bulimic Symptoms

2012 ◽  
Vol 26 (1) ◽  
pp. 10-19 ◽  
Author(s):  
Sonia Rodríguez-Ruiz ◽  
Pedro M. Guerra ◽  
Silvia Moreno ◽  
M. Carmen Fernández ◽  
Jaime Vila
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Negative Relationship ◽  
Rest Period ◽  
Autonomic Regulation ◽  
Eye Blink ◽  
Startle Magnitude ◽  
Bulimic Symptoms ◽  
Food Pictures ◽  
And Control

The aim of the present study was to examine the modulatory influence of heart rate variability (HRV), an index of autonomic regulation, on eye-blink startle in women with bulimic symptoms. Twenty-four women with bulimic symptoms and 24 control women underwent a psychophysiological test to assess their HRVs during a rest period. They then underwent 20 trials designed to measure their startle motor reflexes while viewing pictures of food and pleasant, neutral, and unpleasant pictures. Women with bulimic symptoms and low HRV had larger startle magnitudes while viewing the pictures than women with both bulimic symptoms and high HRV and control women. A negative relationship between HRV and startle magnitude while viewing food pictures was also found in this group. These findings suggest that poor autonomic regulation, indicated by low HRV, plays a modulatory influence in women with bulimic symptoms.

scholarly journals Similar Supine Heart Rate Variability Changes During 24-h Exposure to Normobaric vs. Hypobaric Hypoxia

2021 ◽  
Vol 15 ◽  
Author(s):  
Valérian Tanner ◽  
Raphael Faiss ◽  
Jonas Saugy ◽  
Nicolas Bourdillon ◽  
Laurent Schmitt ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Hypobaric Hypoxia ◽  
Spectral Power ◽  
Rest Period ◽  
Original Data ◽  
Parasympathetic Activity ◽  
Hypoxic Conditions ◽  
Natural Logarithm ◽  
Frequency Domains

Purpose: This study aimed to investigate the differences between normobaric (NH) and hypobaric hypoxia (HH) on supine heart rate variability (HRV) during a 24-h exposure. We hypothesized a greater decrease in parasympathetic-related parameters in HH than in NH.Methods: A pooling of original data from forty-one healthy lowland trained men was analyzed. They were exposed to altitude either in NH (FIO2 = 15.7 ± 2.0%; PB = 698 ± 25 mmHg) or HH (FIO2 = 20.9%; PB = 534 ± 42 mmHg) in a randomized order. Pulse oximeter oxygen saturation (SpO2), heart rate (HR), and supine HRV were measured during a 7-min rest period three times: before (in normobaric normoxia, NN), after 12 (H12), and 24 h (H24) of either NH or HH exposure. HRV parameters were analyzed for time- and frequency-domains.Results: SpO2 was lower in both hypoxic conditions than in NN and was higher in NH than HH at H24. Subjects showed similarly higher HR during both hypoxic conditions than in NN. No difference in HRV parameters was found between NH and HH at any time. The natural logarithm of root mean square of the successive differences (LnRMSSD) and the high frequency spectral power (HF), which reflect parasympathetic activity, decreased similarly in NH and HH when compared to NN.Conclusion: Despite SpO2 differences, changes in supine HRV parameters during 24-h exposure were similar between NH and HH conditions indicating a similar decrease in parasympathetic activity. Therefore, HRV can be analyzed similarly in NH and HH conditions.

scholarly journals Inclusion of a rest period in diaphragmatic breathing increases high frequency heart rate variability: Implications for behavioral therapy

2016 ◽  
Vol 54 (3) ◽  
pp. 358-365 ◽  
Author(s):  
Matthew E. B. Russell ◽  
April B. Scott ◽  
Ian A. Boggero ◽  
Charles R. Carlson
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Frequency ◽  
Behavioral Therapy ◽  
Rest Period ◽  
Diaphragmatic Breathing

scholarly journals Examining the Effects of an Interspersed Biofeedback Training Intervention on Physiological Indices

2020 ◽  
Vol 34 (4) ◽  
pp. 310-318
Author(s):  
Kendra Nelson Ferguson ◽  
Craig Hall ◽  
Alison Divine
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Resonance Frequency ◽  
Respiration Rate ◽  
Skin Conductance ◽  
Rest Period ◽  
Biofeedback Training ◽  
Repeated Measure ◽  
Physiological Control ◽  
Continuous Training

The study aimed to determine whether athletes who practice biofeedback are able to self-regulate by reaching resonance frequency and gaining physiological control quicker than if practice time integrates imagery or a rest period. Intervention effectiveness (e.g., intervention length, time spent training) was also explored. Twenty-seven university athletes were assigned to one of three groups: (a) biofeedback (i.e., continuous training), (b) biofeedback/imagery (i.e., interspersed with imagery), and (c) biofeedback/rest (i.e., interspersed with a rest period). Five biofeedback sessions training respiration rate, heart rate variability, and skin conductance were conducted. A repeated-measure analysis of variance showed a significant interaction between groups over time (p ≤ .05) for respiration rate, heart rate variability, and skin conductance, indicating that resonance frequency and physiological control was regained following imagery or a rest period. Postmanipulation check data found intervention length and training time to be sufficient. Combining imagery with biofeedback may optimize management of psychophysiological processes.

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