scholarly journals Corrective effect of aromatherapy on indices of heart rate variability in students under exam stress conditions

2019 ◽  
Vol 95 (6) ◽  
pp. 563-568
Author(s):  
Hermine T. Abrahamyan ◽  
S. M. Minasyan
Keyword(s):  
Heart Rate ◽  
Physiological State ◽  
Heart Rhythm ◽  
Stress Conditions ◽  
Regulatory Mechanisms ◽  
Spectral Indices ◽  
Corrective Effect ◽  
Exam Stress ◽  
Examination Stress ◽  
Experimental Group

There were investigated changes in indices of the activity of regulatory mechanisms of heart rhythm in student under exam stress conditions and the possibility of their correction with aid of aromatherapy. The examination stress was established to be accompanied by pronounced shifts of integral and spectral indices of heart rhythm in students, indicating to the activation of the sympathetic circuit of Autonomic Nervous System in conditions of examination stress. A positive, relaxation impact of the essential oil of orange on the investigated indices was also recorded. The latter is expressed by weakly pronounced changes or lack of them in data of integral and spectral heart rate indices in students from the experimental group, that indicates to the stabilizing effect of used ethereal oil on the psycho-physiological state of students in conditions of exam stress

scholarly journals Dynamics of Changes in the Indicators of Mathematical Analysis of Heart Rate in Conditions of Adrenaline Myocardial Dystrophy against the Background of Different Functional Activity of the Pineal Gland

2021 ◽  
Vol 6 (6) ◽  
pp. 300-307
Author(s):  
L. D. Chebotar ◽  
◽  
O. M. Larycheva ◽  
H. V. Niepieina ◽  
M. M. Alieksieieva ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pineal Gland ◽  
Functional State ◽  
Mathematical Analysis ◽  
High Efficiency ◽  
Regulatory Mechanisms ◽  
Stress Index ◽  
Corrective Effect ◽  
Myocardial Dystrophy

The purpose of the study was to examine the features of heart rate variability in experimental hyper- and hypofunction of the pineal gland, complicated by adrenal myocardial dystrophy. Materials and methods. To solve the set tasks, three models of functional states were created: hypo-, hyperfunction of the pineal gland, adrenaline myocardial dystrophy. Hypermelatoninemia was reproduced by administering melatonin. The hypofunction of the pineal gland was simulated by round-the-clock lighting. An experimental model of cardiac pathology, namely adrenaline myocardial dystrophy, was reproduced by administering adrenaline hydrochloride. The degree of tension of regulatory mechanisms and mechanisms of nervous regulation was assessed by mathematical analysis of heart rate variability. Results and discussion. The task of mathematical analysis is to extract “hidden information” and thereby assess the state and degree of tension of the regulatory mechanisms of the whole organism. According to the authors, mathematical analysis allows a differentiated approach to the assessment of regulatory effects, which is done by the nervous autonomic system, subcortical structures and the cerebral cortex. The data obtained by the authors suggest that the introduction of adrenaline in conditions of hypofunction of the pineal gland have cause-and-effect changes. These changes lead to disorders of autonomic regulation and possibly a trigger mechanism for a decrease in melatonin production by the pineal gland. Studies have shown that one of the advantages in conditions of hyperfunction of the pineal gland is the dominant role of parasympathetic processes in the mechanisms of adaptation of the heart to conditions of adrenal myocardial dystrophy. Timely and sufficient activation of melatonin provides a high efficiency of compensatory-adaptive changes and a positive role in increasing myocardial resistance. Conclusion. The results of the study showed that the dynamics of changes in the values of the indicators of the mathematical analysis of the heart rate in adrenal myocardial dystrophy against the background of hypo- and hyperfunction of the pineal gland revealed unidirectional changes. These changes are manifested in a decrease in heart rate, stress index and vegetative balance indicator. Consequently, the results obtained suggest that the introduction of melatonin against the background of adrenal myocardial dystrophy has a general corrective effect on the restoration of the functional state of the heart. Based on the results, the authors consider it appropriate to continue the study of the influence of various stressors on the functional state of the heart in conditions of different physiological activity of the pineal gland

Effectiveness the use of additive MEGA-VIT in the ration of mares of Shetland pony breed

2020 ◽  
pp. 60-67
Author(s):  
G. Uskov ◽  
A. Tsopanova ◽  
T. Perezhogina
Keyword(s):  
Physiological State ◽  
Mineral Elements ◽  
Positive Influence ◽  
Control Group ◽  
Physiological Indicators ◽  
Mineral Additive ◽  
Nutritional Needs ◽  
Young Horses ◽  
The Cost ◽  
Experimental Group

Complete feeding of ponies is provided on the basis of data on their nutritional needs depending on age, sex, physiological state and level of productivity (the amount of milk produced and the intensity of growth of young animals). Ponies are sensitive to a lack of vitamins and mineral elements in the feed. When there is a sufficient amount of organic and mineral substances, but a lack or absence of vitamins, horses and ponies have impaired metabolism. The purpose of this work is to study the effectiveness of the use of vitamin and mineral additive MEGA-VIT in the rations of pregnant and lactating mares of Shetland pony breed. It has been found during of the researches that the vitamin and mineral additive MEGA-VIT had a positive influence on the productive and physiological indicators of animals. The cost of spent feed for the entire period of experiment in the control group was 50,6 thousand rubles, and in the experimental group it was 11,8 thousand rubles more or 23,5 %. Revenue from the sale of young horses of the control group amounted to 400 thousand rubles, and experimental group – 440 thousand rubles, this is by 40 thousand rubles more than in control group. This led to the increase in profit in the experimental group of mares by 28,1 thousand rubles and accordingly the level of profitability by 3,2 %. It has been recommended on the results have been obtained on the base of researches to include 30 g/head/day in the rations of mares of Shetland pony breed during pregnancy, and 50 g/head/day during lactation.

INFLUENCE OF STOCK HOUSE LIGHT ON DAIRY PRODUCTIVITY OF COWS

2020 ◽  
Keyword(s):  
Blood Serum ◽  
Physiological State ◽  
Light Level ◽  
Inorganic Phosphorus ◽  
Control Group ◽  
Hemoglobin Content ◽  
Milk Productivity ◽  
Reproductive Ability ◽  
The Cost ◽  
Experimental Group

The article is devoted to the solution of an urgent problem- influence of different lighting modes on the dairy productivity of cows. 2 groups of cows with 20 heads each were formed. In control group, light in the cowshed was 50-75 Lux for a light period of 7.5 h in January to 16.5 h in June, and in experimental group - 150-200 Lux and 16 h, respectively. It was found that the intensity and duration of illumination affects physiological state, reproductive ability and milk productivity of cows. In the experimental group of cows, compared with the control group, hemoglobin content in blood increased by 4.6% (P < 0.01), red blood cells - by 20.6% (P < 0.05), total protein - by 11.2% (P < 0.001), glucose - by 39.1% (P < 0.05). There was a tendency to increase the total calcium and inorganic phosphorus in blood serum of cows of the experimental group. The level of alkaline phosphatase in blood serum of cows in the control group was 71.5% (P < 0.01) higher than that of cows in the experimental group. Milk yield per 1 cow in the experimental cowshed was 433 kg more than in the control. The cost of 1 kg of milk in the experimental group was 0.94 rubles lower, and the profitability of milk production and sales is 9.42% higher than in the control group. To increase the milk productivity of cows, it is recommended to increase light level in barns for tethered keeping to 150-200 Lux, with the duration of lighting in the winter and transition periods of year up to 16 hours per day.

Nursing Diagnosis for Potential Organ Donors: Accuracy Study

2021 ◽  
pp. 105477382110194
Author(s):  
Luciana Nabinger Menna Barreto ◽  
Éder Marques Cabral ◽  
Marina Raffin Buffon ◽  
Juliana Elenice Pereira Mauro ◽  
Lisiane Pruinelli ◽  
...  
Keyword(s):  
Heart Rate ◽  
Diagnostic Accuracy ◽  
Medical Records ◽  
Heart Rhythm ◽  
Organ Donors ◽  
Predictive Capacity ◽  
Nursing Diagnosis ◽  
Accuracy Study ◽  
Altered Blood ◽  
Accuracy Data

The objective was to analyze the diagnostic accuracy of Impaired physiological balance syndrome in potential brain-dead organ donors. It is a study of diagnostic accuracy. Data was retrospectively collected from 145 medical records through the filling out of an instrument containing 25 indicators of the nursing diagnosis (ND). Descriptive and inferential statistics were used. The prevalence of the ND was 77 (53.1%). The indicator with the best measures of accuracy was altered heart rate. Therefore, it has the best predictive capacity for determining the ND. It was identified that the absence of the indicators altered heart rate, hyperglycemia, and altered blood pressure is associated with the absence of the ND, while the presence of the indicators hyperthermia, hypothermia, and altered heart rhythm is associated with the presence of the ND. Accurate indicators will assist in diagnostic inference and the interventions and results will have greater chances of targeting and effectiveness.

scholarly journals Dietary Selenium Regulates microRNAs in Metabolic Disease: Recent Progress

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1527
Author(s):  
Xin Huang ◽  
Yu-Lan Dong ◽  
Tong Li ◽  
Wei Xiong ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Physiological State ◽  
Essential Element ◽  
Dietary Factors ◽  
Regulatory Mechanisms ◽  
Metabolic Risk ◽  
Messenger Rnas ◽  
Immune Disorders ◽  
Se Deficiency ◽  
Safety Range ◽  
Se Status

Selenium (Se) is an essential element for the maintenance of a healthy physiological state. However, due to environmental and dietary factors and the narrow safety range of Se, diseases caused by Se deficiency or excess have gained considerable traction in recent years. In particular, links have been identified between low Se status, cognitive decline, immune disorders, and increased mortality, whereas excess Se increases metabolic risk. Considerable evidence has suggested microRNAs (miRNAs) regulate interactions between the environment (including the diet) and genes, and play important roles in several diseases, including cancer. MiRNAs target messenger RNAs to induce changes in proteins including selenoprotein expression, ultimately generating disease. While a plethora of data exists on the epigenetic regulation of other dietary factors, nutrient Se epigenetics and especially miRNA regulated mechanisms remain unclear. Thus, this review mainly focuses on Se metabolism, pathogenic mechanisms, and miRNAs as key regulatory factors in Se-related diseases. Finally, we attempt to clarify the regulatory mechanisms underpinning Se, miRNAs, selenoproteins, and Se-related diseases.

University Biology and Music Majors' Emotional Ratings of Musical Stimuli and Their Physiological Correlates of Heart, Rate, Finger Temperature, and Blood Pressure

1994 ◽  
Vol 79 (3) ◽  
pp. 1391-1397 ◽  
Author(s):  
Sherman D. Vanderark ◽  
Daniel Ely
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Physiological Responses ◽  
Anechoic Chamber ◽  
Music Majors ◽  
Finger Temperature ◽  
Biology Students ◽  
Before And After ◽  
Experimental Group

Physiological responses associated with the ratings of musical stimuli were investigated. For 101 university music and biology students in the experimental group, heart rate, blood pressure, and finger temperature were measured before and after listening to about 10 min. of music (Venus and Jupiter from Holst's The Planets) in an anechoic chamber. They also served as their own controls by sitting in silence for about 10 min. No significant differences were found on the three measures for the two musical stimuli between the musical or control conditions or between the two majors.

Sleep Stage Assessment Using Power Spectral Indices of Heart Rate Variability With a Simple Algorithm

2012 ◽  
Vol 15 (3) ◽  
pp. 264-272 ◽  
Author(s):  
Keiko Tanida ◽  
Masashi Shibata ◽  
Margaret M. Heitkemper
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sleep Stage ◽  
Sleep Onset ◽  
Low Frequency ◽  
Simple Algorithm ◽  
Sleep Stages ◽  
Spectral Indices ◽  
Current Form ◽  
Power Spectral

Clinical researchers do not typically assess sleep with polysomnography (PSG) but rather with observation. However, methods relying on observation have limited reliability and are not suitable for assessing sleep depth and cycles. The purpose of this methodological study was to compare a sleep analysis method based on power spectral indices of heart rate variability (HRV) data to PSG. PSG and electrocardiography data were collected synchronously from 10 healthy women (ages 20–61 years) over 23 nights in a laboratory setting. HRV was analyzed for each 60-s epoch and calculated at 3 frequency band powers (very low frequency [VLF]-hi: 0.016–0.04 Hz; low frequency [LF]: 0.04–0.15 Hz; and high frequency [HF]: 0.15–0.4 Hz). Using HF/(VLF-hi + LF + HF) value, VLF-hi, and heart rate (HR) as indices, an algorithm to categorize sleep into 3 states (shallow sleep corresponding to Stages 1 & 2, deep sleep corresponding to Stages 3 & 4, and rapid eye movement [REM] sleep) was created. Movement epochs and time of sleep onset and wake-up were determined using VLF-hi and HR. The minute-by-minute agreement rate with the sleep stages as identified by PSG and HRV data ranged from 32 to 72% with an average of 56%. Longer wake after sleep onset (WASO) resulted in lower agreement rates. The mean differences between the 2 methods were 2 min for the time of sleep onset and 6 min for the time of wake-up. These results indicate that distinguishing WASO from shallow sleep segments is difficult using this HRV method. The algorithm's usefulness is thus limited in its current form, and it requires additional modification.

scholarly journals Effectiveness of Hypnosis in Combination with Conventional Techniques of Behavior Management in Anxiety/Pain Reduction during Dental Anesthetic Infiltration

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
A. Ramírez-Carrasco ◽  
C. Butrón-Téllez Girón ◽  
O. Sanchez-Armass ◽  
M. Pierdant-Pérez
Keyword(s):  
Heart Rate ◽  
Skin Conductance ◽  
Pain Control ◽  
Behavior Management ◽  
Statistical Difference ◽  
Dental Treatment ◽  
Management Techniques ◽  
Conventional Behavior ◽  
Behavior Management Techniques ◽  
Experimental Group

Background and Objective. Anxiety/pain are experiences that make dental treatment difficult for children, especially during the time of anesthesia. Hypnosis is used in pediatric clinical situations to modify thinking, behavior, and perception as well as, recently, in dentistry; therefore the aim of this study was to evaluate the effectiveness of hypnosis combined with conventional behavior management techniques during infiltration anesthetic.Methods. Anxiety/pain were assessed with the FLACC scale during the anesthetic moment, as well as heart rate variability and skin conductance before and during the anesthetic moment, between the control and experimental group.Results. A marginal statistical difference (p=0.05) was found in the heart rate between baseline and anesthetic moment, being lower in the hypnosis group. No statistically significant differences were found with the FLACC scale or in the skin conductance (p>0.05).Conclusion. Hypnosis combined with conventional behavior management techniques decreases heart rate during anesthetic infiltration showing that there may be an improvement in anxiety/pain control through hypnotic therapy.

Characteristics of heart rate variability in patients with acute coronary syndrome without ST segment elevation in comparison with clinical and biochemical parameters

2021 ◽  
Vol 29 (3) ◽  
pp. 369-378
Author(s):  
Aleksej A. Nizov ◽  
Aleksej I. Girivenko ◽  
Mihail M. Lapkin ◽  
Aleksej V. Borozdin ◽  
Yana A. Belenikina ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Acute Coronary Syndrome ◽  
Creatine Phosphokinase ◽  
Spectral Power ◽  
Low Frequency ◽  
Heart Rhythm ◽  
St Segment Elevation ◽  
Coronary Syndrome ◽  
St Segment

BACKGROUND: The search for rational methods of primary, secondary, and tertiary prevention of coronary heart disease. To date, there are several publications on heart rate variability in ischemic heart disease. AIM: To study the state of the regulatory systems in the organism of patients with acute coronary syndrome without ST segment elevation based on the heart rhythm, and their relationship with the clinical, biochemical and instrumental parameters of the disease. MATERIALS AND METHODS: The open comparative study included 76 patients (62 men, 14 women) of mean age, 61.0 0.9 years, who were admitted to the Emergency Cardiology Department diagnosed of acute coronary syndrome without ST segment elevation. On admission, cardiointervalometry was performed using Varicard 2.51 apparatus, and a number of clinical and biochemical parameters were evaluated RESULTS: Multiple correlations of parameters of heart rate variability and clinical, biochemical and instrumental parameters were observed. From this, a cluster analysis of cardiointervalometry was performed, thereby stratifying patients into five clusters. Two extreme variants of dysregulation of the heart rhythm correlated with instrumental and laboratory parameters. A marked increase in the activity of the subcortical nerve centers (maximal increase of the spectral power in the very low frequency range with the underlying reduction of SDNN) in cluster 1 was associated with reduction of the left ventricular ejection fraction: cluster 147.0 [40.0; 49.0], cluster 260.0 [58.0; 64.0], cluster 360.0 [52.5; 64.5] % (the data are presented in the form of median and interquartile range; Me [Q25; Q75], p 0,05). Cluster 5 showed significant reduction in SDNN (monotonous rhythm), combined with increased level of creatine phosphokinase (CPC): cluster 5446,0 [186.0; 782.0], cluster 4141.0 [98.0; 204.0] IU/l; Me [Q25; Q75], p 0.05) and MВ-fraction of creatine phosphokinase; cluster 532.0 [15.0; 45.0], 4 cluster 412.0 [9.0; 18.0] IU/l; Me [Q25; Q75], p 0.05). CONCLUSIONS: In patients with acute coronary syndrome without ST segment elevation, cluster analysis of parameters of heart rate variability identified different peculiarities of regulation of the heart rhythm. Pronounced strain of the regulatory systems of the body was found to be associated with signs of severe pathology: the predominance of VLF (spectral power of the curve enveloping a dynamic range of cardiointervals in the very low frequency range) in spectral analysis with an underlying reduced SDNN is characteristic of patients with a reduced ejection fraction, and a monotonous rhythm is characteristic of patients with an increased level of creatine phosphokinase and MB-fraction of creatine phosphokinase.

ORGANIC ACIDS IN FEEDING OF PIGS AND THEIR EFFECT ON PRODUCTIVITY AND CLINICAL AND PHYSIOLOGICAL STATE

2018 ◽  
Vol 1 (2) ◽  
pp. 84-88
Author(s):  
L. A. Nikanova ◽  
Keyword(s):  
Organic Acids ◽  
Orthophosphoric Acid ◽  
Physiological State ◽  
Average Daily Gain ◽  
Initial Dosage ◽  
Live Weight ◽  
Feed Additive ◽  
Control Group ◽  
Daily Gain ◽  
Experimental Group

The influence of feed additive "Ormik" consisting of organic acids (formic acid, lactic acid, orthophosphoric acid, acetic acid), as a filler of diatomite crumb, introduced into concentrated fodders, on the biochemical parameters of blood serum of pigs and on productivity is considered in the article. The studied feed additive was added to the feed daily in the form of loose powder, mixing thoroughly. The initial dosage of the feed additive in the 1st week was 1 g/kg of feed, 2nd week and the following – 3 g/kg of feed. The average daily gain in the live weight of pigs in the experimental group was 11,0% higher than the control group. The animals of the experimental group were less sick and the safety of this group was 100%, in the control group it was 90%.

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