scholarly journals Effect of 48 h Fasting on Autonomic Function, Brain Activity, Cognition, and Mood in Amateur Weight Lifters

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Rima Solianik ◽  
Artūras Sujeta ◽  
Asta Terentjevienė ◽  
Albertas Skurvydas
Keyword(s):  
Heart Rate ◽  
Cognitive Functions ◽  
Autonomic Function ◽  
Brain Activity ◽  
Autonomic Response ◽  
Mental Flexibility ◽  
Frontal Brain ◽  
Before And After ◽  
Weight Lifters ◽  
Calorie Diet

Objectives.The acute fasting-induced cardiovascular autonomic response and its effect on cognition and mood remain debatable. Thus, the main purpose of this study was to estimate the effect of a 48 h, zero-calorie diet on autonomic function, brain activity, cognition, and mood in amateur weight lifters.Methods.Nine participants completed a 48 h, zero-calorie diet program. Cardiovascular autonomic function, resting frontal brain activity, cognitive performance, and mood were evaluated before and after fasting.Results.Fasting decreased (p<0.05) weight, heart rate, and systolic blood pressure, whereas no changes were evident regarding any of the measured heart rate variability indices. Fasting decreased (p<0.05) the concentration of oxygenated hemoglobin and improved (p<0.05) mental flexibility and shifting set, whereas no changes were observed in working memory, visuospatial discrimination, and spatial orientation ability. Fasting also increased (p<0.05) anger, whereas other mood states were not affected by it.Conclusions.48 h fasting resulted in higher parasympathetic activity and decreased resting frontal brain activity, increased anger, and improved prefrontal-cortex-related cognitive functions, such as mental flexibility and set shifting, in amateur weight lifters. In contrast, hippocampus-related cognitive functions were not affected by it.

Abstract P206: Improvement Of Autonomic Function, Sleep, Depression, Anxiety, And Stress In Military Personnel With Traumatic Stress After Use Of A Closed Loop Neurotechnology

Hypertension ◽  
2021 ◽  
Vol 78 (Suppl_1) ◽  
Author(s):  
Catherine Tegeler ◽  
Lindsay Howard ◽  
Kenzie L Brown ◽  
Faiza Asif-Fraz ◽  
Dawn C Kellar ◽  
...  
Keyword(s):  
Heart Rate ◽  
Traumatic Stress ◽  
Baroreflex Sensitivity ◽  
Primary Outcome ◽  
Closed Loop ◽  
Autonomic Function ◽  
Brain Activity ◽  
Acoustic Stimulation ◽  
Beneficial Effects ◽  
Symptom Scores

Introduction: Symptoms associated with military-related traumatic stress (MTS) include insomnia, depression, anxiety, and impaired autonomic control. High-resolution, relational, resonance-based, electroencephalic mirroring (HIRREM®) is a noninvasive, closed-loop acoustic stimulation technology that identifies dominant brain frequencies and translates them in real time into audible tones of variable pitch and timing, to support self-optimization of brain activity. Objective: Evaluate changes in autonomic and symptoms scores after use of HIRREM in subjects enrolled in a pilot study for MTS. Methods: Thirty-two service members or Veterans (1 female), mean (SD) age 40.8 (6.4), with MTS symptoms for 7.3 years (3.9), received 19.2 (1.0) HIRREM sessions over 12 days. Continuous recordings of blood pressure and heart rate, for analysis of baroreflex sensitivity (BRS) and heart rate variability (HRV), were done at V1 and V2. Symptom inventories collected before (Visit 1, V1), immediately after (primary outcome, V2, n = 32), and at 1, 3, and 6 months after completion of HIRREM included traumatic stress (PCL-M), insomnia (ISI), depression (CES-D), and anxiety (GAD-7). Paired t-tests were performed. Results: HIRREM improved BRS measured as HF alpha (10.8 ms/mmHg, 2.5, p<0.001), Sequence Down (7.3 ms/mmHg, 2.1, p<0.001), Sequence Up (7.6 ms/mmHg, 2.4, p=0.001), and Sequence All (7.3 ms/mmHg, 1.8, p<0.001), as well as HRV; SDNN (14.1 ms, 3.6, p=0.005), rMSSD (12.8 ms, 2.6, p<0.05). MAP dropped 2.7 mmHg, 1.2, p<0.05 and SAP dropped 5.9 mmHg, 1.8, p=0.007. Mean symptom scores were reduced at V2; PCL-M [-12.9 (± 9.1), p<0.001], ISI [-6.3 (± 5.0), p<0.001], CES-D [-13.7 (±9.2), p<0.001], and GAD-7 [-6.7. (± 4.7), p<0.001]. Symptom scores improved 1-month post-HIRREM for all measures, and clinically relevant and significant benefits persist at 3 and 6 months. Conclusions: These results suggest improved autonomic cardiovascular regulation and statistically significant reduction in scales associated with the use of HIRREM for symptoms of MTS. Controlled trials could provide important insights regarding both the mechanisms associated with the beneficial effects of HIRREM, and the functional disturbances underlying MTS.

Effect of radiofrequency catheter ablation of accessory pathways on autonomic tone in children

1999 ◽  
Vol 9 (4) ◽  
pp. 377-383 ◽  
Author(s):  
Ruchir Sehra ◽  
Joyce E. Hubbard ◽  
Susan P. Straka ◽  
Naomi S. Fineberg ◽  
Douglas P. Zipes ◽  
...  
Keyword(s):  
Heart Rate ◽  
Catheter Ablation ◽  
Supraventricular Tachycardia ◽  
Radiofrequency Catheter Ablation ◽  
Autonomic Function ◽  
Accessory Pathways ◽  
Non Invasive ◽  
Autonomic Changes ◽  
Before And After ◽  
Autonomic Blockade

AbstractBackgroundRadiofrequency catheter ablation is standard treatment for children with re-entrant supraventricular tachycardias. Autonomic changes have been noted after such ablation for atrioventricular nodal re-entry tachycardia, but not as well documented with atrioventricular re-entry over an accessory pathway.Methods and resultsIn 10 normal paediatric volunteers and 12 children referred for electrophysiologic testing and radiofrequency ablation of supraventricular tachycardia, non-invasive autonomic function tests and tilt-table testing were performed, and the variability in 24-h heart rate was analysed. Patients with supraventricular tachycardia underwent these tests both 24–72 h before and 24 h after ablation. Patients with tachycardia underwent additional autonomic testing to assess the sensitivity of baroreceptors and the intrinsic heart rate with autonomic blockade immediately before and after ablation. One non-invasive autonomic function test, namely handgrip, demonstrated significant differences (p < 0.05) in diastolic blood pressure before and after ablation, though these values did not differ from controls. Significant decreases were noted in two indexes of the variability of heart rate before and after ablation (p < 0.05). Certain tilt test variables also demonstrated significant differences between controls and those with tachycardia subsequent to ablation. Intracardiac testing demonstrated changes (p < 0.05) in sinus cycle lengths, effective refractory periods and/or blood pressures at baseline and during testing of the sensitivity of baroreceptors before and after ablation. These changes were consistent with increased sympathetic or decreased parasympathetic tone. With autonomic blockade, these differences were abolished.ConclusionsCatheter ablation of accessory pathways in children was associated with changes consistent with increased sympathetic or decreased parasympathetic tone. These autonomic changes persisted 24 h after the ablation procedure.

scholarly journals Cognitive Training with Neurofeedback Using NIRS Improved Cognitive Functions in Young Adults: Evidence from a Randomized Controlled Trial

2021 ◽  
Vol 12 (1) ◽  
pp. 5
Author(s):  
Rui Nouchi ◽  
Haruka Nouchi ◽  
Jerome Dinet ◽  
Ryuta Kawashima
Keyword(s):  
Young Adults ◽  
Cognitive Training ◽  
Cognitive Functions ◽  
Near Infrared ◽  
Brain Activity ◽  
Controlled Trial ◽  
Down Regulation ◽  
Beneficial Effects ◽  
Wide Range ◽  
Before And After

(1) Background: A previous study has shown that cognitive training with neurofeedback (CT-NF) using down-regulation improves cognitive functions in young adults. Neurofeedback has two strategies for manipulating brain activity (down-regulation and upregulation). However, the benefit of CT-NF with the upregulation of cognitive functions is still unknown. In this study, we investigated whether the upregulation of CT-NF improves a wide range of cognitive functions compared to cognitive training alone. (2) Methods: In this double-blinded randomized control trial (RCT), 60 young adults were randomly assigned to one of three groups: CT-NF group, CT alone group, and an active control (ACT) group who played a puzzle game. Participants in the three groups used the same device (tablet PC and 2ch NIRS (near-infrared spectroscopy)) and performed the training game for 20 min every day for four weeks. We measured brain activity during training in all groups, but only CT-NFs received NF. We also measured a wide range of cognitive functions before and after the intervention period. (3) Results: The CT-NF groups showed superior beneficial effects on episodic memory, working memory, and attention compared to the CT alone and ACT groups. In addition, the CT-NF group showed an increase in brain activity during CT, which was associated with improvements in cognitive function. (4) Discussion: This study first demonstrated that the CT-NF using the upregulation strategy has beneficial effects on cognitive functions compared to the CT alone. Our results suggest that greater brain activities during CT would enhance a benefit from CT.

scholarly journals The influence of concussion on cardio-autonomic function during cognition before and after exercise

Neurology ◽  
2018 ◽  
Vol 91 (23 Supplement 1) ◽  
pp. S9.3-S9
Author(s):  
Adam T. Harrison ◽  
Brett Steven Gunn ◽  
Jacob James Michael Kay ◽  
Robert Davis Moore
Keyword(s):  
Heart Rate ◽  
Aerobic Exercise ◽  
Autonomic Function ◽  
Preliminary Investigation ◽  
Therapeutic Benefit ◽  
Environmental Stressors ◽  
Student Athlete ◽  
Before And After ◽  
History Of ◽  
Integral Process

In an average day of a student-athlete, they must endure the cognitive demand of classes, physical stress of practice, and then end the day studying and doing homework for the next day. Cardio-autonomic regulation is an integral process linking the neurologic and cardiological systems, that responds and adapts to these changing environmental stressors to maintain overall effective functioning. The adaptation of the cardio-autonomic system to environmental stressors is often impaired in people who have experienced a concussion. The aim of the current study, was to assess cardio-autonomic function in a group of athletes with and without a history of sports-related concussion (SRC) in an experimental paradigm designed to mimic an average day of a student-athlete. Heart-rate variability (HRV) was assessed in a group of adolescent athletes with a history of diagnosed concussion (n = 16) and healthy matched controls (n = 19) (1) at rest; (2) during a switch task paradigm; and (3) during a switch task paradigm following a 20-minute bout of aerobic exercise at ∼70% of their theoretical max heart rate. Results of the preliminary investigation revealed that individuals with a history of SRC exhibited alterations in HRV at rest, that were exacerbated by the cognitive load of the switch task. However, following the bout of aerobic exercise, HRV normalized in the individuals with a history of SRC. These results continue to demonstrate cardio-autonomic dysregulation following a SRC. It also indicates the potential therapeutic benefit of aerobic exercise in mediating these cardio-autonomic abnormalities.

Central trigeminal effects of somatostatin and etorphine on adrenal and autonomic function in the cat

1996 ◽  
Vol 270 (3) ◽  
pp. R636-R644
Author(s):  
D. A. Bereiter ◽  
A. P. Benetti ◽  
D. F. Bereiter ◽  
C. B. Hathaway
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Arterial Pressure ◽  
Autonomic Function ◽  
Opiate Receptor ◽  
Autonomic Responses ◽  
Trigeminal Neurons ◽  
Before And After ◽  
Mu Opiate Receptor ◽  
Stimulation Of

The influence of somatostatin and the potent mu-opiate receptor agonist etorphine on adrenal and autonomic responses mediated by trigeminal neurons was examined in chloralose-anesthetized cats. Microinjections of somatostatin (100 pmol) into laminae I-II of trigeminal subnucleus caudalis (Vc) evoked increases in the adrenal secretion of catecholamines and adrenal blood flow without affecting arterial pressure, heart rate, or plasma adrenocorticotropic hormone. Injections of somatostatin into laminae III-IV of Vc had no effect. Microinjections of etorphine (500 pmol) into laminae I-II of Vc had no effect, whereas injections into laminae III-IV caused small increases in total adrenal blood flow and peripheral concentrations of norepinephrine. To assess local effects of these drugs on peripheral trigeminal nociceptor-evoked autonomic responses, corneal stimulation was presented before and after topical application of somatostatin or etorphine on the dorsal brain stem surface. Somatostatin did not affect the adrenal and autonomic responses evoked by noxious thermal or chemical irritant stimulation of the cornea. Topical etorphine blocked completely the increase in adrenal blood flow, arterial pressure, and heart rate after noxious thermal stimulation of the cornea. These results suggest that somatostatin and mu-opiate receptor agonists act by different mechanisms at the level of the spinal trigeminal complex to affect adrenal and autonomic function.

scholarly journals Influence of hydrotherapy on clinical and cardiac autonomic function in migraine patients

2016 ◽  
Vol 7 (01) ◽  
pp. 109-113 ◽  
Author(s):  
M. U. Sujan ◽  
M. Raghavendra Rao ◽  
Ravikiran Kisan ◽  
Hulegar A. Abhishekh ◽  
Atchayaram Nalini ◽  
...  
Keyword(s):  
Heart Rate ◽  
Autonomic Function ◽  
Impact Test ◽  
Low Frequency ◽  
Cardiac Autonomic Function ◽  
Thermal Therapies ◽  
Before And After ◽  
To Receive ◽  
Headache Impact

ABSTRACT Background: Migraine is associated with autonomic symptoms. The growing body of literature suggests that the dysfunctional autonomic nervous system might play a pivotal role in the pathogenesis of migraine. Thermal therapies have been hypothesized to modulate these changes and alleviate pain. However, data regarding the efficacy of hydrotherapy in migraine remain scant. We evaluated the effect of add on hydrotherapy procedure (a hot arm and foot bath with ice massage to head) in migraine patients. Methods: Forty chronic migraine patients fulfilling the International Classification of Headache Disorders II criteria were recruited from the neurology outpatient clinic. Patients were randomized to receive either hydrotherapy plus conventional pharmacological care (n = 20) or conventional medication only (n = 20). Hydrotherapy group received treatment with hot arm and foot bath (103°F to 110°F) and ice massage to head daily for 20 min for 45 days. Patients were assessed using headache impact test (HIT), visual analog scale for pain and cardiac autonomic function by heart rate variability (HRV) before and after intervention period. Results: There was a significant decrease in HIT score, frequency, and intensity of headaches following treatment in both the groups. However, it was more evident in add on hydrotherapy group compared to pharmacological treatment alone group. There was also significant improvement in the HRV parameters. In particular, there was a significant decrease in heart rate (P = 0.017), increase in high frequency (HF) (P = 0.014) and decrease in low frequency/HF ratio (P = 0.004) in add on hydrotherapy group. Conclusion: Our study shows that add on hydrotherapy enhanced the vagal tone in addition to reducing the frequency and intensity of headaches in migraine patients.

Caffeine and Placebo Expectation

2007 ◽  
Vol 21 (2) ◽  
pp. 91-99 ◽  
Author(s):  
Yunfeng Sun ◽  
Yinling Zhang ◽  
Ning He ◽  
Xufeng Liu ◽  
Danmin Miao
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Sleep Deprivation ◽  
Cognitive Performance ◽  
Cognitive Functions ◽  
Cardiovascular Regulation ◽  
Double Blind ◽  
Positive Effects ◽  
Pressure Tests ◽  
Healthy Males

Abstract. Caffeine placebo expectation seems to improve vigilance and cognitive performance. This study investigated the effect of caffeine and placebo expectation on vigilance and cognitive performance during 28 h sleep deprivation. Ten healthy males volunteered to take part in the double-blind, cross-over study, which required participants to complete five treatment periods of 28 h separated by 1-week wash-out intervals. The treatments were no substance (Control); caffeine 200 mg at 00:00 (C200); placebo 200 mg at 00:00 (P200); twice caffeine 200 mg at 00:00 and 04:00 (C200-C200); caffeine 200 mg at 00:00 and placebo 200 mg at 04:00 (C200-P200). Participants were told that all capsules were caffeine and given information about the effects of caffeine to increase expectation. Vigilance was assessed by a three-letter cancellation test, cognitive functions by the continuous addition test and Stroop test, and cardiovascular regulation by heart rate and blood pressure. Tests were performed bihourly from 00:00 to 10:00 of the second day. Results indicated that C200-P200 and C200-C200 were more alert (p < .05) than Control and P200. Their cognitive functions were higher (p < .05) than Control and P200. Also, C200-P200 scored higher than C200 in the letter cancellation task (p < .05). No test showed any significant differences between C200-P200 and C200-C200. The results demonstrated that the combination of caffeine 200 mg and placebo 200 mg expectation exerted prolonged positive effects on vigilance and cognitive performance.

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

Sign in / Sign up

Export Citation Format

Share Document