F223. COMPARATIVE STUDY OF HEART RATE VARIABILITY AND EMOTIONAL RESPONSE TO POSITIVE AND NEGATIVE AUDIOVISUAL STIMULATION IN PATIENTS WITH CHRONIC SCHIZOPHRENIA AND HEALTHY CONTROL

Abstract Background This study was to investigate the Heart Rate Variability (HRV) and emotional response to positive and negative audiovisual stimulation in patients with chronic schizophrenia and healthy control group. Methods Among 253 chronic schizophrenic patients, 104 patients were informed about this research and consented. 35 healthy control consisted of peoples that did not have past and present history of mental and physical illness. Positive and negative affect and HRV were compared between chronic schizophrenia and healthy control groups, and positive and negative affect and HRV to positive and negative audiovisual stimulation were measured. Positive and negative audiovisual stimulation was defined by an art therapy professionalist and a psychiatrist as 10 positive and negative pictures. 3 positive and negative musics were shown to two groups for 4 minutes simulta¬neously. Positive and negative audiovisual stimulation were shown to two groups during 1-week intermission. HRV was measured with Ubpulse H3, an equipment for autonomic nervous system test made by Laxtha company and also analyzed by frequency domain analysis. Emotional Empathy Scale(EES) and Positive Affect and Negative Affect Schedule (PANAS) of two groups were measured at baseline and after positive and negative audiovisual stimulation. Global Assessment of Functioning Scale(GAF) and Positive and Negative Syndrome Scale(PANSS) of chronic schizophrenia group were measured by a psychiatrist. Results Positive affect of patients group were significantly lower than control group, negative affect of patients group were significantly higher than control group. Low Frequency (LF), High Frequency (HF), and Total Power (TP) of HRV in patients group were significantly lowered than control group at baseline. 7 subscales of emotional empathy scale were lowered in patients group compared to control group. Positive affect of patients group was significantly less increased compared to the control group after positive audiovisual stimulation, negative affect of patients group was significantly less decreased to the control group after positive audiovisual stimulation. Positive affect of patients group was increased after negative audiovisual stimulation, but positive affect of control group was significantly decreased compared to the patients group after negative audiovisual stimulation. There was no significant difference in negative affect between two groups after audiovisual stimulation. LF of patients group was significantly higher than control group after positive audiovisual stimulation, HF and TP of patients group were significantly lowered than control group after positive audiovisual stimulation. LF of patients group was significantly higher than control group after negative audiovisual stimulation, HF and PT of patients were significantly lowered than control group after negative audiovisual stimulation. Discussion Audiovisual stimulation in integrative arts therapy program for schizophrenia might have avoid overactive sympathetic stimulation and recommend activate parasympathetic stimulation. Integrative art therapy for schizophrenia must be sufficiently relaxed, empathetic, and promote positive affect during therapeutic process.

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A Comparative Study of Sleep Quality and Heart Rate Variability Index in Shifts and Non-Shift Working Population of Bengaluru

International Journal of Physiology ◽

10.5958/2320-608x.2019.00137.9 ◽

2019 ◽

Vol 7 (4) ◽

pp. 54

Author(s):

Davana Sunkari ◽

S. Venkatesh

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Sleep Quality ◽

Comparative Study ◽

Working Population ◽

Heart Rate Variability Index ◽

Variability Index

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Heart Rate Variability Analysis between Premenopausal and Postmenopausal known Diabetics: A Comparative Study

Biomedical & Pharmacology Journal ◽

10.13005/bpj/620 ◽

2015 ◽

Vol 8 (1) ◽

pp. 351-354

Author(s):

P.Shanmuga priya ◽

K. Balasubramanian Kabali

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Comparative Study ◽

Heart Rate Variability Analysis ◽

Variability Analysis

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Impact of Biofeedback Interventions on Driving Performance in Individuals with Persistent Post-Concussive Symptoms

10.5772/intechopen.95415 ◽

2021 ◽

Author(s):

Marquise M. Bonn ◽

Liliana Alvarez ◽

James W.G. Thompson ◽

James P. Dickey

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Peripheral Vision ◽

Intervention Group ◽

Driving Performance ◽

Driving Ability ◽

Control Groups ◽

Electromagnetic Tomography ◽

Healthy Control ◽

Reducing Stress

Low resolution electromagnetic tomography (LoRETA) neurofeedback and heart rate variability (HRV) biofeedback may improve driving ability by enhancing attention, impulse control, and peripheral vision, and reducing stress. However, it is unclear whether combined LoRETA neurofeedback and HRV biofeedback can improve driving performance for individuals experiencing persistent post-concussive symptoms (PPCS). In this study, seven individuals with PPCS completed an eight-week LoRETA neurofeedback and HRV biofeedback intervention. Changes in participants’ simulated driving performance and self-reported symptoms were measured and compared to two control groups: individuals with PPCS (n = 9), and healthy control participants (n = 8). Individuals in the intervention and PPCS control groups reported reduced PPCS severity (p < .05) compared to healthy control participants. Interestingly, individuals in the intervention group responded variably. These results indicate that more research is necessary to identify the subgroup of individuals that respond to LoRETA neurofeedback and HRV biofeedback and confirm these preliminary results.

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Biofeedback as an intervention for persistent post-concussive symptoms: A randomized feasibility trial

Journal of Concussion ◽

10.1177/20597002211046459 ◽

2021 ◽

Vol 5 ◽

pp. 205970022110464

Author(s):

Marquise M Bonn ◽

Liliana Alvarez ◽

Laura Graham ◽

James W Thompson ◽

James P Dickey

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Biofeedback Training ◽

Feasibility Trial ◽

Control Group ◽

Low Resolution ◽

Heart Rate Variability Biofeedback ◽

Electromagnetic Tomography ◽

Healthy Control ◽

Study Intervention

Background Case reports indicate that low-resolution electromagnetic tomography neurofeedback and heart rate variability biofeedback may improve physiological functioning in individuals with persistent post-concussive symptoms. However, it is unclear whether larger-scale studies are feasible. Purpose To evaluate the feasibility of a combined low-resolution electromagnetic tomography neurofeedback and heart rate variability biofeedback intervention for individuals with persistent post-concussive symptoms. Methods Individuals with persistent post-concussive symptoms were randomized into intervention and control groups, and their baseline and post-test assessments were compared to a healthy control group. Outcomes included self-report questionnaires, resting electroencephalograph and electrocardiograph recordings, and a driving simulation task. Participants in the intervention group completed three 20 min low-resolution electromagnetic tomography neurofeedback sessions per week and at-home heart rate variability biofeedback training every morning and night for 8 weeks. Feasibility was evaluated according to recruitment capability and sample characteristics, data collection procedures, suitability of the intervention and study procedures, management and implementation of the study intervention, and preliminary participant responses to the intervention. Results Thirty-three individuals were recruited and 24 completed this study (seven intervention participants, nine persistent post-concussive symptoms control participants, and eight healthy control participants). One-quarter of participants (four intervention participants and three persistent post-concussive symptoms control participants) experienced simulator sickness during the driving simulator task and had to withdraw from the study. Intervention participants had an 88% and 86% compliance rate for the low-resolution electromagnetic tomography neurofeedback and heart rate variability biofeedback sessions, respectively. Low-resolution electromagnetic tomography neurofeedback sessions took approximately 1 h to complete per participant. Preliminary analysis indicated that the intervention reduced electroencephalograph z-score deviation with a very large effect size ( d = 1.36) compared to the other study groups. Conclusions Pilot studies evaluating the efficacy of low-resolution electromagnetic tomography neurofeedback and heart rate variability biofeedback should be performed to confirm these preliminary findings. However, the protocol should be modified to reduce participant fatigue and withdrawal. This trial was registered with Clinicialtrials.gov (NCT03338036; https://clinicaltrials.gov/ct2/show/NCT03338036?term=03338036&draw=2&rank=1 ).

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Effect of slow breathing exercise on non linear Heart rate variability in transfusion dependent thalassemic patients

Journal of Bangladesh Society of Physiologist ◽

10.3329/jbsp.v14i1.41998 ◽

2019 ◽

Vol 14 (1) ◽

pp. 26-32

Author(s):

Kamol Chandra Das ◽

Sultana Ferdousi

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Conventional Treatment ◽

Autonomic Nerve ◽

Nerve Function ◽

Breathing Exercise ◽

Autonomic Nerve Function ◽

Non Linear ◽

Healthy Control ◽

Slow Breathing

Background: Nonlinear measure of heart rate variability (HRV) is an emerging tool to detect changes in cardiac autonomic nerve function (CANF) in transfusion dependent thalassemic (TDT) patients. Slow breathing exercise (SBE) can significantly improve HRV in health and various diseases. Objective: To observe the effect of slow breathing exercise (SBE) on non linear measures of HRV in TDT patients. Methods: This prospective interventional study was done in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka in 2018 on 60 male TDT patients aged 15-30 years. Thirty patients received conventional treatment and 30 patients performed slow breathing exercise along with the conventional treatment for 3 months. Age and sex matched 30 healthy control were enrolled. All subjects were followed up at baseline and after 3 months. Non linear (Poincare) HRV parameters were recorded by Power Lab 8/35 AD Instrument, Australia. For statistical analysis paired sample ‘ t’ test and independent sample ‘t’ test were used. Result: SD1, SD2 and SD1/SD2 were found significantly lower in TDT patients compared to healthy control at baseline. After 3 months of slow breathing exercise, significant increment of these parameters occurred with trend of improvement in cardiac autonomic nerve function in this group of patients. Conclusion: Slow breathing exercise may improve cardiac autonomic nerve function and sympathovagal balance in transfusion dependent thalassemic patients. J Bangladesh Soc Physiol. 2019, June; 14(1): 26-32

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