The Effect of Respiratory and Physical Intervention on Selected Parameters of Heart Rate Variability in Hematooncological Patients after Treatment

The aim of this research was determined the effect of respiratory intervention for twelve weeks and physical intervention for twelve weeks on selected parameters of heart rate variability in hematooncological patients after treatment. Spectral analysis of heart rate variability was measured by DiANS PF8 machine with Medical DiANS PC software. Evaluated were complex indices – Total score and Sympathovagal balance (S-V balance). The intervention programme was composed of three months of respiratory training and then three months of physical training. The experimental group, which absolved this combination of respiratory and physical intervention, was assessed at free time points: firstly, before the respiratory intervention, secondly between the respiratory and the physical intervention and thirdly after the physical intervention. The control group (without intervention) was measured twice between six months. 30 hematooncological patients (16 women and 14 men) were participated in this research, ranging in age 53,74±14,76 years from Internal Hematology and Oncology Clinic of The University Hospital Brno. Results of selected parameters of heart rate variability showed improvements, but without statistically significant effect of intervention programme.

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Effects of Electrical Acupuncture on Acupoint BL15 Evaluated in Terms of Heart Rate Variability, Pulse Rate Variability and Skin Conductance Response

The American Journal of Chinese Medicine ◽

10.1142/s0192415x06003606 ◽

2006 ◽

Vol 34 (01) ◽

pp. 23-36 ◽

Cited By ~ 54

Author(s):

Chih-Chieh Hsu ◽

Ching-Sung Weng ◽

Te-Sheng Liu ◽

Yuh-Show Tsai ◽

Yung-Hsien Chang

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Skin Conductance ◽

Pulse Rate ◽

Skin Conductance Response ◽

Control Group ◽

Pulse Rate Variability ◽

Electrical Acupuncture ◽

Experimental Group ◽

Frequency Power

In this research, heart rate variability (HRV), pulse rate variability (PRV) and human skin conductance (SC) of all acupoints on Heart Meridian were used to evaluate the effects of electrical acupuncture (EA) on acupoint BL15 (Bladder Meridian). Ten healthy volunteers (aged 23 ± 6) were selected as the control group on the first day, and then used again as the experimental group on the second day. The control group received sham EA during the study, while subjects of the experimental group were stimulated by 2 Hz EA on acupoint BL15 for 10 minutes. Electrocardiogram (ECG), wrist blood pressure pulse meter and skin conductance response (SCR) device were used to measure and analyze HRV, PRV and SCR for the two groups before and after stimulation. From the spectrum analysis of ECG and pulse pressure graph, we found that the EA applied on BL15 could induce a significant increase in the normalized high frequency power (nHFP) component of HRV and PRV, as well as a significant decrease in the normalized low frequency power (nLFP) part ( p < 0.05). Moreover, both the heart rate and pulse rate were reduced in the analysis of the time domain of ECG and PRV. Furthermore, most of the SCR values at acupoints were decreased after stimulation. These results also indicate that the stimulation of BL15 by EA could cause relaxation, calmness and reduce feeling of tension or distress.

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Interval Hypoxic Training in Rehabilitation Program for Adolescents with Overweight / Obesity and Comorbid Arterial Hypertension: Open-Label Randomized Study

Вопросы современной педиатрии ◽

10.15690/vsp.v20i1.2236 ◽

2021 ◽

Vol 20 (1) ◽

pp. 51-61

Author(s):

Alexandra V. Mashanskaya ◽

Anna V. Pogodina ◽

Alina V. Atalyan ◽

Lyubov V. Rychkova ◽

Olga V. Bugun ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Arterial Hypertension ◽

Aerobic Training ◽

Rehabilitation Program ◽

Control Group ◽

Hypoxic Training ◽

Psychoemotional State ◽

Experimental Group ◽

Age And Sex

Background. Searching for new strategies for the rehabilitation of adolescents with obesity and comorbid arterial hypertension (AHT) before significant pathological changes development in the cardiovascular system remains the urgent challenge. Objective. The aim of the study was to examine the effect of interval hypoxic training (IHT) on blood pressure (BP) levels in adolescents with overweight / obesity and comorbid AHT. Methods. Adolescents aged 14-17 years with body mass index SDS ≥ 1 and grade I AHT (mean level of systolic and/or diastolic BP ≥ 95th percentile for population of corresponding age, sex and height) have been randomized to the group «aerobic training» (treadmill walking) and “aerobic training + IHT” (usage of hypoxicator in intermittent operation cycles). All patients were on subcaloric diet (10% reduction in caloric intake for given age). Primary outcome measure was the difference between groups on systolic/diastolic BP levels according to 24-hour BP monitoring after completion of training program (10 classes each). The effects of IHT on body composition (bioelectrical impedance analysis), heart rate variability and psychoemotional state (Spielberger scale, assessment of health, activity and mood) were further estimated. Results. 43 patients were assigned to the index group, and 42 — to the control group. 67 patients have completed the research program. 5 patients (12%) from the IHT group and 13 patients (31%; p = 0.029) from the control group prematurely discontinued participation in the trial due to poor exercise tolerance. The groups were comparable in baseline systolic and diastolic BP. Decrease in BP occurred in both groups after 10 workouts. There were no differences in decrease value: mean difference for SBP was 2.4 mm Hg (95% CI -6.6 ... 1.8), for DBP — 0.2 mm Hg (-3.6 ... 4.0). However, the incidence of reaching the targeted SBP (< 95th percentile for the corresponding age and sex) after completion of the treatment was recorded in 66% patients in the experimental group and in 42% patients in the control group (p = 0,047). Positive dynamics in several indicators of heart rate variability and psychoemotional state were mentioned in the IHT group. Conclusion. The IHT implementation in the complex of rehabilitation program for adolescents with overweight / obesity and AHT has no additional positive effect on BP levels. However, the incidence of reaching the targeted SBP (< 95th percentile for the corresponding age and sex) after completion of the treatment was recorded in 66% patients in the experimental group and in 42% patients in the control group (p = 0,054).

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Effects of Heart Rate Variability Biofeedback in Patients With Acute Ischemic Stroke: A Randomized Controlled Trial

Biological Research For Nursing ◽

10.1177/1099800419881210 ◽

2019 ◽

Vol 22 (1) ◽

pp. 34-44

Author(s):

Wan-Ling Chang ◽

Jiunn-Tay Lee ◽

Chi-Rong Li ◽

Amy H. T. Davis ◽

Chia-Chen Yang ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Ischemic Stroke ◽

Cognitive Impairment ◽

Psychological Distress ◽

Acute Ischemic Stroke ◽

Autonomic Function ◽

Control Group ◽

Randomized Controlled ◽

Experimental Group

Background: Autonomic dysfunction, cognitive impairment, and psychological distress are associated with poorer prognosis in patients with acute ischemic stroke (AIS). Heart rate variability (HRV) biofeedback (BF) improves autonomic dysfunction, cognitive impairment, and psychological distress in other patient populations, but its effect in patients with AIS is still unclear. Objective: This study investigated the effects of an HRVBF intervention on autonomic function, cognitive impairment, and psychological distress in patients with AIS. Method: In this randomized, controlled, single-blind trial, patients with AIS were randomly assigned to the experimental or control group. The experimental group received four HRVBF training sessions. The control group received usual care. Repeated measures of HRV, mini-mental status examination (MMSE), and Hospital Anxiety and Depression Scales (HADS) were collected prior to and at 1 and 3 months postintervention. Results: A total of 35 patients completed the study (19 experimental, 16 control). HRV and HADS significantly improved in the experimental group ( p < .001) but not in the control group. Likewise, only the experimental group showed significant improvements in HRV, MMSE, and HADS over time ( p < .05). Conclusion: HRVBF is a promising intervention for improving autonomic function, cognitive impairment, and psychological distress in patients with AIS. More studies of HRVBF interventions are needed to further optimize the effects of HRVBF on autonomic, cognitive, and psychological function in patients with AIS.

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THE NEW PHYSICAL EDUCATION AT SCHOOL: CORRECTIONAL AND HEALTH-IMPROVING USAGE OF STUDENTS’ PHYSIOLOGICAL INDEXES AS MARKERS OF PHYSICAL DEVELOPMENT AND HEALTH DISORDERS

Human Sport Medicine ◽

10.14529/hsm190106 ◽

2019 ◽

Vol 19 (1) ◽

pp. 42-49

Author(s):

V Gorelik ◽

C Filippova

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Physical Education ◽

Physical Health ◽

Dynamic Control ◽

Development Program ◽

Physical Development ◽

Control Group ◽

Software Complex ◽

Experimental Group

Aim. The article deals with establishing the efficiency of applying control and measuring indexes at Physical Education classes (physical development indexes, heart rate variability) as factors of health development and academic performance assessment. Materials and methods. We examined 20 fifth-grade male pupils (n = 20) from school No 90 (Togliatti), who formed the basic experimental group and followed a correction and development program. We also examined pupils of the same gender, age, and number at school No 91 (Togliatti) to form the control group with a standard school program. The following methods of diagnostics were used: a computer program ‘Express Assessment of Pupils’ Physical Health’ and heart rate variability assessment by means of Varicard 2.51 hardware and software complex. Results. The article provides the experimental justification of using the dynamics of functional indicators (physical development indexes, heart rate variability) as control and measuring indexes at Physical Education classes. We established that at the initial stage of the pedagogical experiment there were no significant differences between the indicators of physical health in the experimental and control groups. In the experimental group, after lessons, including the selection of correction and development exercises depending on physical development indexes and heart rate variability, we registered a significant improvement of the parameters studied. In the control group, there were no significant changes in physical development or health status. Therefore, physiological markers provide a maximal objectivation of physical development, health, and academic progress assessment in pupils at PE lessons. Conclusion. Measuring physical development and health indexes in screening mode allows: 1) to perform a dynamic control of children ontogenesis, 2) to detect and promptly prevent dysontogenesis, 3) to prevent schoolchildren’s disadaptation after overloads.

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Development and validation of humming process to increase heart rate variability & attention for college students

10.31219/osf.io/7e9dz ◽

2021 ◽

Author(s):

Irani Fariburz Z ◽

Trivedi Gunjan Y ◽

Sinha Neeta

Keyword(s):

College Students ◽

Heart Rate ◽

Heart Rate Variability ◽

Statistical Analysis ◽

Short Duration ◽

Emotional Regulation ◽

Control Group ◽

Development And Validation ◽

The Impact ◽

Experimental Group

Aim: The objective of the study was to compare the impact of daily 10 min humming practice for one week on heart-brain coherence and attention on college students. Methodology: The evidence indicates that increased heart-brain coherence facilitates better emotional regulation and thereby increases attention. Simple humming practice was identified as a method to increase the heart-brain coherence. Each student was assigned randomly to an experimental group or control group. The experimental group (n= 15) performed 10-minutes humming daily for 7 days and the control group (n=15) was not asked to do anything. 10-minute humming was simplified Bhramari practice with total breath duration of 13 seconds based on short training. SDMT (Symbol Digit Modalities Test) and Heart Brain Coherence (using Emwave Pro Device by HeartMath Inc.) was conducted for both the groups on Day 1 and Day 7. Statistical analysis was conducted using student-t test to understand the results. Results: For the experimental group, there was statistically significant improvement in both “Coherence” and “SDMT” score on Day 7 (compared to Day 1, p<.05). For control group, the change in both parameters was not statistically significant. Conclusions: The results confirm that a short duration humming practice just for one week can increase the heart-brain coherence and Heart Rate Variability and has a significant impact on increasing attention amongst the college students. These findings can be leveraged to facilitate better concentration and potentially increased performance for college students.

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Sample Size Determination for Evaluation of Time Domain Heart Rate Variability Indices in Canine Lameness

Journal of the American Animal Hospital Association ◽

10.5326/jaaha-ms-6533 ◽

2018 ◽

Vol 54 (5) ◽

pp. 235-238

Author(s):

Melanie J. Hezzell ◽

Jonathan Ferrari ◽

Jason Arndt ◽

Margaret Sleeper

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Sample Size ◽

Time Domain ◽

Sample Size Determination ◽

University Of Pennsylvania ◽

Control Group ◽

Autonomic Tone ◽

The University ◽

Veterinary Hospital

ABSTRACT Heart rate variability (HRV) is a physiologic phenomenon that occurs due to changing autonomic tone resulting in variable RR intervals. A reduction in HRV is used as an index of pain in neonatal human patients. Objective measures of pain would be valuable in the evaluation of canine patients and assessment of response to pain management strategies. We hypothesized that dogs with diseases associated with discomfort (osteoarthritis and bone neoplasia) would have reduced HRV compared with normal, healthy dogs. The aim of the study was to calculate the sample size necessary to investigate this hypothesis. Seventeen dogs from the Ryan Veterinary Hospital of the University of Pennsylvania patient population or owned by Ryan Veterinary Hospital of the University of Pennsylvania staff were enrolled in this single-blind, prospective pilot study. A 30 min electrocardiogram (ECG) was obtained from each dog using an ambulatory electrocardiographic monitor. All ECGs were obtained between 10 a.m. and 2 p.m. ECGs were analyzed and time-domain HRV indices computed. Sample size calculations suggest that 207 dogs would be necessary to ascertain if HRV is reduced in dogs experiencing discomfort or pain (50 in the arthritis group, 79 in the bone cancer group, and 78 in the control group).

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Transcutaneous Electrical Stimulation of Acupoints Changes Body Composition and Heart Rate Variability in Postmenopausal Women with Obesity

Evidence-based Complementary and Alternative Medicine ◽

10.1093/ecam/nep145 ◽

2011 ◽

Vol 2011 ◽

pp. 1-7 ◽

Cited By ~ 6

Author(s):

Li-Wei Chien ◽

Miao-Hsiang Lin ◽

Hsueh-Yu Chung ◽

Chi-Feng Liu

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Body Composition ◽

Waist Circumference ◽

Postmenopausal Women ◽

Body Fat ◽

Control Group ◽

Percentage Body Fat ◽

Frequency Domain Methods ◽

Experimental Group

This study aimed to evaluate the effect of transcutaneous electric acupoint stimulations (TEAS) on body composition and heart rate variability (HRV) in postmenopausal women with obesity. In this prospective study, 49 postmenopausal women were recruited in Taiwan. Body composition was used as a screening test for obesity (percentage body fat > 30%, waist circumference > 80 cm). The experimental group (n= 24) received TEAS treatment 30 min twice per week for 12 weeks at the Zusanli (ST 36) and Sanyinjiao (SP 6) acupoints. The control group (n= 25) did not receive any intervention. The study of HRV was analyzed by time (standard deviation of the normal-to-normal (NN) intervals (SDNN) and square root of the mean squared differences of successive NN intervals (RMSSD) indices) and frequency domain methods. Power spectral components were obtained at low (LF) and high (HF) frequencies. Body composition and HRV values were measured at the 4th, 8th, and 12th weeks. A total of 40 subjects completed this study. Waist circumference and percentage body fat in the experimental group (n= 20) were significantly less than those of the control group (n= 20) at the 8th and 12th weeks (allP< .05). Additionally, at the same time points, percentage lean body mass in the experimental group was significantly greater than that in the control group (P< .05). SDNN values increased significantly at the 4th and 8th weeks when compared with the control group (allP< .05). At 12 weeks, SDNN value was not significantly different from that of the control group (P= .105). TEAS treatment improves body composition, and has a transient effect on the HRV in postmenopausal women with obesity.

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Evaluation of Heart Rate Variability in Critically-ill Neonates

Journal of Advances in Medicine and Medical Research ◽

10.9734/jammr/2020/v32i430396 ◽

2020 ◽

pp. 24-33

Author(s):

Fatmah Nassar ◽

Ashraf Ibrahim ◽

Amr Zoair ◽

Mohamed Rowisha

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Critically Ill ◽

Neonatal Intensive Care ◽

Newborn Infants ◽

Holter Monitoring ◽

University Hospital ◽

Control Group ◽

Cardiac Autonomic Dysfunction ◽

Critically Ill Neonates

Aims: The objective of this work was to evaluate heart rate variability (HRV) in critically-ill neonates admitted to NICU, to detect the effect of different causes of critical illness on cardiac autonomic function and outcome of these neonates. Study Design: Case-control study. Place and Duration of Study: Neonatal Intensive Care Unit (NICU) of Pediatric Department, Tanta University Hospital, in the period from January 2018 to May 2019. Methodology: We included 30 neonates who were critically-ill according to Score for Neonatal Acute Physiology with Perinatal Extension II (SNAPPE-II score) as cases Group. Fifteen healthy full term neonates, matched for age and sex, were enrolled as a control group. 24-hour Holter monitoring was performed with recording and interpretation of ECG data for every neonate in the study, including analysis of HRV. Results: There was significant increase of mean HR in critically-ill neonates as compared to control group. There was significant decrease of all HRV parameters (SDNN, SDANN, SDNNI, RMSSD and PNN50) in critically-ill neonates as compared to control group (P< 0.05). Significant negative correlations between SNAPPE-II score and HRV parameters (SDNN, SDANN, SDNNI, RMSSD, PNN50) in critically-ill neonates were present, whereas there was non-significant positive correlation between SNAPPE-II score and mean heart rate. Conclusion: HRV parameters decreased significantly in critically-ill neonates admitted to NICU, denoting severe cardiac autonomic dysfunction in these sick newborn infants. HRV strongly correlated to severity (SNAPPE-II score) and outcome, with strong relation to mortality of these critically-ill neonates.

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Toward an Embodied Medicine: A Portable Device with Programmable Interoceptive Stimulation for Heart Rate Variability Enhancement

Sensors ◽

10.3390/s18082469 ◽

2018 ◽

Vol 18 (8) ◽

pp. 2469 ◽

Cited By ~ 12

Author(s):

Daniele Di Lernia ◽

Pietro Cipresso ◽

Elisa Pedroli ◽

Giuseppe Riva

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

High Frequency ◽

Portable Device ◽

Control Group ◽

Short Term ◽

Band Power ◽

Future Challenges ◽

Experimental Group ◽

Single Blind

In this paper, we describe and test a new portable device that is able to deliver tactile interoceptive stimulation. The device works by delivering precise interoceptive parasympathetic stimuli to C-tactile afferents connected to the lamina I spinothalamocortical system. In humans, interoceptive stimulation can be used to enhance heart rate variability (HRV). To test the effectiveness of the device in enhancing HRV, 13 subjects were randomly assigned in a single-blind between-subjects design either to the experimental condition or to the control condition. In the experimental condition, subjects received stimulation with the developed device; in the control condition subjects received stimulation with static non-interoceptive pressure. Subjects’ electrocardiograms (ECG) were recorded, with sampling at 1000 Hz for 5 min as a baseline, and then during the stimulations (11 min). Time domain analyses were performed to estimate the short-term vagally mediated component (rMSSD) of HRV. Results indicated that the experimental group showed enhanced rMSSD, compared to the control group. Moreover, frequency domain analyses indicated that high frequency band power, which reflects parasympathetic activity in humans, also appeared to be enhanced in the experimental group compared to control subjects. Conclusions and future challenges for an embodied perspective of rehabilitative medicine are discussed.

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Efficiency of Heart Rate Variability Biofeedback in Adolescents Aged 15–16 Years After Physical Exercise in a Cold Environment

Journal of Medical and Biological Research ◽

10.37482/2687-1491-z026 ◽

2020 ◽

pp. 341-349

Author(s):

Oleg S. Zaborskiy ◽

◽

Liliya V. Poskotinova ◽

Ol’ga V. Krivonogova

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Physical Exercise ◽

Recovery Period ◽

Stress Index ◽

Control Group ◽

Strength Exercise ◽

Cold Environment ◽

Short Term ◽

Experimental Group

Short-term biofeedback (BF) training provides effective restoration of the cardiovascular system (CVS) after physical exercise. Purpose: assessment of CVS reactivity in adolescents aged 15–16 years during a heart rate variability (HRV) BF session following a speed-strength exercise (thricerepeated standing long jump) in the open air (from –1 to –10 °C). Materials and methods. Healthy adolescents were examined: an experimental group (n = 15) subject to HRV BF training (3 min) using Varikard equipment (Ramena, Russia) in order to increase the total HRV power and a control group (n = 12). The following stages of recording HRV and blood pressure indicators were singled out: background (initial indicators), period immediately after physical activity, and recovery period with HRV training (experimental group) or being at rest (control group). Results. During the recovery period after a HRV BF session, subjects from the experimental group showed significantly higher total HRV power compared with the control (p = 0.04). In experimental group individuals with a heart rate of less than 90 bpm against the background of its increase during BF training, stress index did not change significantly. In subjects with tachycardia (above 90 bpm), heart rate and stress index remained elevated at all stages. Conclusion. Short-term BF training (3 min) after a speed-strength exercise in a cold environment increases the total HRV power in adolescents; the degree of reduction in sympathetic response depends on the initial heart rate level. The relative increase in heart rate during HRV BF training after physical exercise in a cold environment indicates the need for a longer BF session (over 3 min) in order to achieve a more pronounced influence of vagal effects on the heart rhythm.

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