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

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.

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

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 ).

scholarly journals Heart Rate Variability in Insulo-Opercular Epilepsy

2021 ◽  
Vol 11 (11) ◽  
pp. 1505
Author(s):  
Thi Phuoc Yen Tran ◽  
Philippe Pouliot ◽  
Elie Bou Bou Assi ◽  
Pierre Rainville ◽  
Kenneth A. Myers ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Seizure Outcome ◽  
Healthy Population ◽  
Healthy Individuals ◽  
Control Groups ◽  
Rr Interval ◽  
Before And After ◽  
Healthy Control ◽  
Parasympathetic Tone

Background: We aimed to evaluate heart rate variability (HRV) changes in insulo-opercular epilepsy (IOE) and after insulo-opercular surgery. Methods: We analyzed 5-min resting HRV of IOE patients before and after surgery. Patients’ SUDEP-7 risk inventory scores were also calculated. Results were compared with age- and sex-matched patients with temporal lobe epilepsy (TLE) and healthy individuals. Results: There were no differences in HRV measurements between IOE, TLE, and healthy control groups (and within each IOE group and TLE group) in preoperative and postoperative periods. In IOE patients, the SUDEP-7 score was positively correlated with pNN50 (percentage of successive RR intervals that differ by more than 50 ms) (p = 0.008) and RMSSD (root mean square of successive RR interval differences) (p = 0.019). We stratified IOE patients into those whose preoperative RMSSD values were below (Group 1a = 7) versus above (Group 1b = 9) a cut-off threshold of 31 ms (median value of a healthy population from a previous study). In group 1a, all HRV values significantly increased after surgery. In group 1b, time-domain parameters significantly decreased postoperatively. Conclusion: Our results suggest that in IOE, HRV may be either decreased in parasympathetic tone or increased globally in both sympathetic and parasympathetic tones. We found no evidence that insulo-opercular surgeries lead to major autonomic dysfunction when a good seizure outcome is reached. The increase in parasympathetic tone observed preoperatively may be of clinical concern, as it was positively correlated with the SUDEP-7 score.

scholarly journals Heart Rate Variability Monitoring during Interferential Current Application in the Lower Back Area: A Cross-Sectional Study

2021 ◽  
Vol 18 (7) ◽  
pp. 3394
Author(s):  
Blanca De-la-Cruz-Torres ◽  
Eva Martínez-Jiménez ◽  
Emmanuel Navarro-Flores ◽  
Patricia Palomo-López ◽  
Vanesa Abuín-Porras ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Placebo Group ◽  
Intervention Group ◽  
Lumbar Pain ◽  
Poincaré Plot ◽  
Current Application ◽  
Cross Sectional ◽  
Vasovagal Reactions ◽  
Interferential Current

Vasovagal reactions may occur occasionally during electrical stimulation using interferential current (IFC). The purpose of this study was to examine variations in autonomic activity during the application of IFC in asymptomatic participants by analysis of their heart rate variability (HRV). Seventy-three male volunteers were randomly assigned to a placebo group (n = 36; HRV was documented for 10 min, both at rest and during a placebo intervention) and an intervention group (n = 37; HRV was documented for 10 min in two conditions labelled as (1) rest and (2) application of IFC technique on the lumbar segment). The diameters of the Poincaré plot (SD1, SD2), stress score (SS), and the ratio between sympathetic and parasympathetic activity (S/PS) were measured. After interventions, differences amongst the placebo group and the IFC group were found in SD2 (p < 0.001), SS (p = 0.01) and S/PS ratio (p = 0.003). The IFC technique was associated with increased parasympathetic modulation, which could induce a vasovagal reaction. Monitorization of adverse reactions should be implemented during the application of IFC technique. HRV indicators might have a part in prevention of vasovagal reactions. Further studies in patients with lumbar pain are needed to explore possible differences in HRV responses due to the presence of chronic pain.

Heart Rate Variability Biofeedback in Grandmothers Raising Grandchildren: Effects on Stress, Emotions, and Cognitions

Biofeedback ◽  
2013 ◽  
Vol 41 (3) ◽  
pp. 144-149 ◽  
Author(s):  
Jaclene A. Zauszniewski ◽  
Tsay-Yi Au ◽  
Carol M. Musil
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Perceived Stress ◽  
Repeated Measures ◽  
Negative Emotions ◽  
Pilot Trial ◽  
Heart Rate Variability Biofeedback ◽  
Grandmothers Raising Grandchildren ◽  
Depressive Cognitions ◽  
Reducing Stress

Over one million American grandmothers raise grandchildren, and many experience stress that may be alleviated by biofeedback. This pilot trial of 20 grandmothers used a pretest-posttest design with repeated measures to test the effects of heart rate variability (HRV) biofeedback on perceived stress, negative emotions, and depressive cognitions. Significant decreases in stress, negative emotions, and depressive cognitions were found. Biofeedback is thus potentially effective for reducing stress and depressive thoughts and feelings in grandmothers raising grandchildren, and the intervention warrants further testing.

scholarly journals DEMENTED OLDER ADULT’S SALIVARY CORTISOL LEVELS AND PHYSICAL STRESS INDEX AS STRESS INDICATOR

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S874-S874
Author(s):  
Eunji Kwon ◽  
Eunhee Cho
Keyword(s):  
Older Adults ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Salivary Cortisol ◽  
Nursing Intervention ◽  
Physical Stress ◽  
Stress Index ◽  
Control Groups ◽  
Cortisol Levels ◽  
As Stress

Abstract Demented older adults experience many internal and external stress inducers that are thought to be a source of behavioral and psychological symptoms of dementia(BPSD). The purpose of this study was to compare the stress index among older adults through salivary cortisol levels and physical stress index. This study was cross-sectional design, including 139 participants who recruited until May of this year(104 demented older adults who visited hospital outpatient neurology and 35 non-demented older adults as control group). The physical stress index was measured by heart rate variability and salivary cortisol levels(4 samples/day, 1 days). Salivary cortisol levels were measured at four times after wake up, after breakfast, before dinner and after dinner. The data were analyzed using independent t-test and generalized estimating equations. In salivary cortisol levels measured after wake up, the demented older adults reported about 1.5 times higher than non-demented older adults(p=.042). And the salivary cortisol levels measured after breakfast were about 2.3 times higher in the demented older adults than in control groups(p=.002). Accordingly, the results can be concluded that demented older adults have higher stress levels than control groups in the morning. Also the physical stress index through heart rate variability(HRV) in the demented older adults(6.30±0.65) had higher than control groups(6.00±0.55, t=2.45, p=.016). There are significant differences in salivary cortisol levels and physical stress index between demented older adults and control groups. As stress inducers affects BPSD for the demented older adults, nursing intervention should be tailored to proper way based on their stress inducers.

scholarly journals Psychological and physiological effects of emotion focused training for self-compassion and self-protection

2019 ◽  
Vol 22 (2) ◽  
Author(s):  
Júlia Halamová ◽  
Jana Koróniová ◽  
Martin Kanovský ◽  
Mária Kénesy Túniyová ◽  
Nuriye Kupeli
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Active Control ◽  
Expressive Writing ◽  
Intervention Group ◽  
Effect Sizes ◽  
Control Group ◽  
Active Control Group ◽  
Self Compassion ◽  
Self Protection

Emotion Focused Training for Self-Compassion and Self-Protection (EFT-SCP) is a novel intervention developed on the basis of the latest findings on self-criticism from Emotion-focused therapy and existing programs designed to cultivate compassion. EFT-SCP is designed to encourage participants to cultivate self-compassion and protective anger as a way of reducing selfcriticism. Our goal was to investigate the effect of this group-based intervention on self-criticism, self-protection, and self-compassion. A total of 73 students were assigned to the EFT-SCP intervention (n=19), no-treatment control (n=34) or to an active control group (n=20). The intervention group met weekly for 1.5 hours and were instructed to incorporate EFT-SCP tasks into their daily life for 12 weeks. Whilst the no-treatment group did not undergo an intervention, the active control group completed an adapted expressive writing task once a week. In addition to the assessment of heart rate variability during imagery tasks, participants also completed self-reported measures of self-compassion and self-criticism before and after the intervention. Compared with both control groups, the intervention group showed a significant increase in heart rate variability following EFT-SCP (during self-critical imagery, P=.049; probability of superiority was .63, and during self-compassionate imagery P=.007; probability of superiority was .62, both effect sizes were medium) and significant decreases in self-criticism (Hated Self P=.017; .34 and Inadequate Self P<.001; .33) and selfuncompassionate responding (P<.001; .39). All three effect sizes were small. Participating in EFT-SCP had a positive effect on psychological and physiological outcomes.

Effect of Acupuncture at Ht7 on Heart Rate Variability: An Exploratory Study

2015 ◽  
Vol 33 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Huanlin Huang ◽  
Zheng Zhong ◽  
Junqi Chen ◽  
Yong Huang ◽  
Jixuan Luo ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Low Frequency ◽  
Sham Acupuncture ◽  
Acupuncture Group ◽  
Control Groups ◽  
Parasympathetic System ◽  
Registration Number ◽  
Frequency Components ◽  
Random Number Table

Objective To explore the effect of acupuncture at HT7 on heart rate variability (HRV) in healthy volunteers. Methods 120 subjects were divided into four groups using a random number table. The following groups of acupuncture interventions were used: HT7 verum acupuncture; HT7 non-penetrating sham acupuncture; acupuncture at a sham point; and no acupuncture. HRV was recorded 10 min before, during and after each stimulation using an Actiheart ECG recorder. Results The HT7 verum acupuncture group had higher very-low frequency, low frequency and high frequency components of HRV compared with the control groups during but not after acupuncture. The HT7 verum acupuncture group also had higher SD of normal intervals compared with the sham needling and no acupuncture control groups. Conclusions Our preliminary study suggests, subject to limitations, that acupuncture at HT7 could affect cardiac autonomic neural regulation in healthy subjects, manifest as increased HRV, most likely via the parasympathetic system. Trial Registration Number ChiCTR-TRC-08000302.

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

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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