scholarly journals Heart rate variability during pre-competition and competition periods in volleyball players

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Robert Podstawski ◽  
Michał Boraczyński ◽  
Danuta Nowosielska-Swadźba ◽  
Danuta Zwolińska
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Activity Level ◽  
Cardiac Conduction ◽  
Total Power ◽  
Time Analysis ◽  
Volleyball Players ◽  
Competition Period ◽  
The Impact

Summary Study aim: Regular exercise training is thought to modify cardiac autonomic control. One of the body’s responses to training stimuli is heart rate variability (HRV). The use of HRV in the management of sport training is a common practice. The objective of the present study was to assess the impact of the physical activity level on HRV of 1st league national volleyball players prior to and during the competition period. Materials and methods: The study involved 11 players whose HRV was evaluated during the two analysed training periods. Selected indicators of spectral analysis (total power, %VLF, % LF, % HF powers, LF n.u, HF n.u, and LF/HF powers) as well as time analysis (HR, RR, RMSSD, NN50) were assessed on the basis of recordings. Results: The studies conducted in the pre-competition and competition periods showed significant differences in the parameters of spectral VLF% analysis and time NN50 analysis. In the competition period, a significant increase in VLF [%] may be the result of increased psycho-physical arousal, when compared to the pre-competition period. ] Conclusions: Resting bradycardia, assessed on the basis of time analysis indicators, may be the result of internal changes in the sinus node, which reflects the impact of long-term training on the cardiac conduction system. A high level of physical activity of volleyball players in the tested periods could have contributed to a reduction in vagal tone and a shift in the balance of the autonomic nervous system in the direction of the sympathetic system, which may be the result of overtraining

Abstract P315: Increase in Stress May Contribute to Lower Heart Rate Variability in Healthy Young Subjects

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Amanda C Costa ◽  
Ana Gabriela C Silva ◽  
Cibele T Ribeiro ◽  
Guilherme A Fregonezi ◽  
Fernando A Dias
Keyword(s):  
Cardiovascular Disease ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Volunteers ◽  
Perceived Stress ◽  
Low Frequency ◽  
Statistical Correlation ◽  
Total Power ◽  
The Impact ◽  
Nonparametric Correlation

Background: Stress is one of the risk factors for cardiovascular disease and decreased heart rate variability is associated to increased mortality in some cardiac diseases. The aim of the study was to assess the impact of perceived stress on cardiac autonomic regulation in young healthy volunteers. Methods: 35 young healthy volunteers (19 to 29 years old, 6 men) from a Brazilian population were assessed for perceived stress by the translated and validated Perceived Stress Scale (PSS, 14 questions) and had the R-R intervals recorded at rest on supine position (POLAR RS800CX) and analyzed (5 minutes, Kubius HRV software) by Fast-Fourier Transform for quantification of Heart Rate Variability (HRV). Results: Average data (±SD) for age, heart rate, BMI, waist circumference and percentage of body fat (%BF) were: 21.3±2.7 years; 65.5±7.9 bpm; 22.3±1.9 Kg/m 2 ; 76.0±6.1 cm and 32.1±6.6%; respectively. The mean score for the PSS-14 was 23.5±7.2 and for the HRV parameter as follow: SSDN=54.8±21.2ms; rMSSD=55.9±32.2ms; low-frequency (LF)= 794.8±579.7ms 2 ; High-frequency (HF)= 1508.0±1783.0 ms 2 ; LF(n.u.)= 41.1±16.2; HF(n.u.)= 58.9±16.2; LF/HF=0.89±0.80 and Total power (TP)= 3151±2570ms 2 . Spearman nonparametric correlation was calculated and there was a significant correlation of PSS-14 scores and LF (ms 2 ) (r=−0.343; p= 0.044). Other HRV variables did not shown significant correlation but also had negative values for Spearman r (TP r=−0.265, p=0.124; HF r=−0.158; SSDN r=−0.207; rMSSD r=−0.243, p=0.160). LF/HF and LF(n.u.) did not correlate to PSS-14 having Spearman r very close to zero (LF/HF r=−0.007, p=0.969; LF(n.u.) r=−0.005, p=0.976). No correlation was found for HRV parameters and BMI and there was a trend for statistical correlation of %BF and LF (ms 2 ) (r=−0.309, p=0.071). Conclusions: These data demonstrate a possible association of perceived stress level and HRV at rest. Changes in LF can be a consequence of both sympathetic and parasympathetic activity, however, analyzing the other variables HF, TP, SSDN and rMSSD (all negative Spearman r) and due to the lack of changes in LF/HF ratio and LF(n.u.) we interpret that increased stress may be associated to decrease in overall heart rate variability. These changes were seen in healthy individuals and may point out an important mechanism in cardiovascular disease development.

scholarly journals Exercise intensity to maximal aerobic speed, physical activity level and heart rate variability in postmenopausal women

2020 ◽  
Vol 20 (2) ◽  
pp. 63-70
Author(s):  
Felipe de Ornelas ◽  
Danilo Rodrigues Batista ◽  
Vlademir Meneghel ◽  
Wellington Gonçalves Dias ◽  
Guilherme Borsetti Businari ◽  
...  
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Physical Exercise ◽  
Postmenopausal Women ◽  
Aerobic Capacity ◽  
Exercise Intensity ◽  
Physical Activity Level ◽  
Activity Level ◽  
Maximal Aerobic Speed

Physical inactivity is main cause of disease worldwide. Identify the physical exercise preference, resulting in increases adherence and future intention to perform physical activity. The preference of the intensity of exercise questionnaire (PRETIE-Q) is the main tool used to assess preference in physical exercise. Variables as age, body mass index (BMI), usual physical activity level (PAL), maximal oxygen uptake (VO2máx), can influence in PRETIE-Q answers. The purpose of this study was investigate if there is relation between preference for exercise intensity with maximal aerobic speed (MAS), PAL and heart rate variability (HRV) in postmenopausal women phase. Participated of study 30 subjects who answer PRETIE-Q together with analyses of MAS, PAL and HRV. Preference was large correlated with MAS (r = 0.63), PAL (r = 0.57) and HRVRMSSD (r = 0.52). Together, MAS (40.4%), PAL (10.7%) and HRVRMSSD (6.4%) explained 57.5% of the preference score. This results study allow to health professional, that prescribe physical exercise, understand that subjects with high aerobic capacity, cardiovagal modulation and usual PAL will have preference for high intensity exercise. In consequence, can increase the adherence to systematic practice of physical exercise. Conclude that preference of exercise intensity for women in postmenopausal phase is related with aerobic capacity, high HRV and physical activity level.

scholarly journals How Is the Self-Perceived Work Ability Affected by the Duration of Unemployment, Heart Rate Variability and the Amount of Physical Activity in Older Long-Term Unemployed Persons?

2020 ◽  
Vol 17 (6) ◽  
pp. 2039
Author(s):  
Anke Bumann ◽  
Daniel Niederer ◽  
Constanze Santarossa ◽  
Winfried Banzer ◽  
Lutz Vogt
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Work Ability ◽  
Vigorous Physical Activity ◽  
Total Power ◽  
Work Ability Index ◽  
Cross Sectional ◽  
Perceived Work Ability ◽  
Duration Of Unemployment

Background: This study investigated whether work ability is associated with the duration of unemployment, heart rate variability (HRV), and the level of physical activity. Methods: Thirty-four unemployed persons (mean 55.7 ± standard deviation 33.3 years, 22 female, 12 male, unemployed: range 1–22.5 years) participated in the cross-sectional study. The Work Ability Index (WAI) and International Physical Activity Questionnaire (IPAQ) were applied. Short-term (five minutes) resting HRV (Low Frequency (LF), High Frequency (HF), Total Power (TP)) was collected. Results: Work ability was positively associated with the HRV: LF (r = 0.383; p = 0.025), HF (r = 0.412; p = 0.015) and TP (r = 0.361; p = 0.036). The WAI showed a positive linear correlation with the amount of total physical activity (r = 0.461; p = 0.006) as well as with the amount of moderate to vigorous physical activity (r = 0.413; p = 0.015). No association between the WAI and the duration of unemployment occurred. Conclusions: the relation between self-perceived work ability, health-associated parameters, the HRV and the level of physical activity points out the relevance of health-care exercise and the need of stress-reducing interventions to improve perceived work ability. Our results point out the need for the further and more holistic development of healthcare for the unemployed.

scholarly journals Assessment of the impact of 10-day intermittent hypoxia on the autonomic control measured by heart rate variability

2018 ◽  
Vol 105 (4) ◽  
pp. 386-396 ◽  
Author(s):  
ZZ Taralov ◽  
KV Terziyski ◽  
PK Dimov ◽  
BI Marinov ◽  
SS Kostianev
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Parasympathetic Nervous System ◽  
Autonomic Control ◽  
Total Power ◽  
Hypoxic Exposure ◽  
Intermittent Hypoxic Training ◽  
Parasympathetic Nervous System Activity ◽  
The Impact

Purpose The purpose of this study is to establish the alterations in the activity of the autonomic nervous system (ANS) via heart rate variability (HRV) in subjects exposed to 1 h of exogenous hypoxia for 10 consecutive days. Methods Twelve healthy non-smoker males at mean age of 29.8 ± 7.4 (mean ± SD) breathed hypoxic air delivered through hypoxicator (FiО2 = 12.3% ± 1.5%) for 1 h in 10 consecutive days. Pulse oximetry and electrocardiography were monitored during the visit and HRV was calculated for the entire 1-h hypoxic period. Results Comparing the last hypoxic visit to the first, subjects had higher standard deviation of normal-to-normal interbeat intervals (SDNNs) (65.7 ± 32.5 vs. 81.1 ± 32.0 ms, p = 0.013) and root mean square of successive R–R interval difference (RMSSD) (58.1 ± 30.9 vs. 76.5 ± 34.6 ms, p = 0.029) as well as higher lnTotal power (8.1 ± 1.1 vs. 8.5 ± 0.9 ms2, p = 0.015) and high frequency (lnHF) (6.8 ± 1.3 vs. 7.5 ± 1.2 ms2, p = 0.05) and lower LF/HF (2.4 ± 1.4 vs. 1.5 ± 1.0, p = 0.026). Changes in saturation (87.0 ± 7.1 vs. 90.8 ± 5.0%, p = 0.039) and heart rate (67.1 ± 8.9 vs. 62.5 ± 6.0 beats/min, p = 0.040) were also observed. Conclusions Intermittent hypoxic training consisting of 1-h hypoxic exposure for 10 consecutive days could diminish the effects of acute exogenous hypoxia on the ANS characterized by an increased autonomic control (SDNN and total power) with augmentation of the parasympathetic nervous system activity (increased RMSSD and HF and decreased LF/HF). Therefore, it could be applied as a pre-acclimatization technique aiming at an increase in the autonomic control and oxygen saturation in subjects with upcoming sojourn to high altitude.

scholarly journals Association of heart rate variability with regional difference in senility death ratio: ALLSTAR big data analysis

2019 ◽  
Vol 7 ◽  
pp. 205031211985225 ◽  
Author(s):  
Junichiro Hayano ◽  
Masaya Kisohara ◽  
Yutaka Yoshida ◽  
Hiroyuki Sakano ◽  
Emi Yuda
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Big Data ◽  
Regional Differences ◽  
Regional Difference ◽  
Elderly Person ◽  
Activity Level ◽  
Activity Levels ◽  
Physical Activity Levels

Objectives: Senility death is defined as natural death in the elderly who do not have a cause of death to be described otherwise and, if human life is finite, it may be one of the ultimate goals of medicine and healthcare. A recent survey in Japan reports that municipalities with a high senility death ratio have lower healthcare costs per late-elderly person. However, the causes of regional differences in senility death ratio and their biomedical determinants were unknown. In this study, we examined the relationships of the regional difference in senility death ratio with the regional differences in heart rate variability and physical activity. Methods: We compared the age-adjusted senility death ratio of all Japanese prefectures with the regional averages of heart rate variability and actigraphic physical activity obtained from a physiological big data of Allostatic State Mapping by Ambulatory ECG Repository (ALLSTAR). Results: The age-adjusted senility death ratio of 47 Japanese prefectures in 2015 ranged from 1.2% to 3.6% in men and from 3.5% to 7.8% in women. We compared these ratios with the age-adjusted indices of heart rate variability in 108,865 men and 136,536 women and of physical activity level in 16,661 men and 21,961 women. Heart rate variability indices and physical activity levels that are known to be associated with low mortality risk were higher in prefectures with higher senility death ratio. Conclusion: The regional senility death ratio in Japan may be associated with regional health status as reflected in heart rate variability and physical activity levels.

HEART RATE VARIABILITY IN WOODWORKING MACHINIST TRAINEES DURING WORKSHOP PRACTICE

2020 ◽  
pp. 135-141
Author(s):  
O.V. Kiyok ◽  
V.M. Pokrovskiy
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Adaptive Capacity ◽  
Regulatory System ◽  
Study Groups ◽  
Total Power ◽  
Tension Index ◽  
Workshop Practice ◽  
Adverse Influence ◽  
The Impact

The impact of specific factors on students during workshop practice results in tension of regulatory and adaptive mechanisms. This fact can be estimated according to the heart rate variability (HRV). It is of the integral indicators reflecting all mechanisms of cardiac regulation. The aim of the study is to assess students’ adaptive capacity during workshop training based on HRV. Materials and Methods. The authors divided 30 students into two groups: a group of less adapted and a group of more adapted students. J. Strelau’s theory on temperament and H. Eysenck's personality types were used for the purpose. The authors studied heart rate variability at the beginning and at the end of workshop practice. Statistika 6.0 for Windows was used to process the results. Results. The authors distinguished differences in HRV in two study groups. Before practice, the regulatory system tension index was 479.64 in the group of less adapted students. It was 106.86 in the group of more adapted students. The total power (ms2) indicating adaptive capacity was by 80.9 % higher in more adapted students. After workshop practice, changes in the tonus of the autonomic nervous system were observed in both study groups. However, in the group of less adapted students, indicators confirming sympathicotonia and a decrease in heart rate variability changed to a greater degree. Thus, tension index in the group of more adapted students increased by 46.7 %, and in the group of less adapted students – by 209.9 %. The authors also observed a decrease in the total power: in more adapted students by 51.3 %, and in the less adapted students by 54.3 %. Results. Analysis of HRV showed a more evident adverse influence of workshop practice on less adapted students. Keywords: students, workshop practice, heart rate variability. Воздействие специфических факторов на учащихся при прохождении производственной практики приводит к напряжению регуляторно-адаптивных механизмов, что можно оценить по вариабельности ритма сердца (ВРС) – одному из интегральных показателей, отражающих механизмы сердечной регуляции на всех уровнях. Цель исследования. Оценить адаптивные возможности учащихся при прохождении производственной практики по показателям ВРС. Материалы и методы. У 33 учащихся, разделенных согласно теории Я. Стреляу и в соответствии с психологическими типами личности по Айзенку на группы менее адаптированных и более адаптированных, изучили вариабельность ритма сердца в начале и конце производственной практики. Для обработки результатов исследования применяли программу Statistika 6,0 for Windows. Результаты. Установлены различия ВРС в двух исследуемых группах. До практики индекс напряжения регуляторных систем (ИН) в группе менее адаптированных составил 479,64, в группе более адаптированных учащихся – 106,86. Общая мощность спектра ТР (мс2), свидетельствующая об адаптивных возможностях, у более адаптированных учащихся была выше на 80,9 %. После производственной практики изменения тонуса вегетативной нервной системы отмечены в обеих исследуемых группах. Однако в группе менее адаптированных учащихся показатели, свидетельствующие о симпатикотонии и уменьшении вариабельности ритма сердца, изменились в большей степени. Так, ИН в группе более адаптированных учащихся увеличился на 46,7 %, а в группе менее адаптированных – на 209,9 %. Отмечено уменьшение общей мощности спектра: у более адаптированных на 51,3 %, у менее адаптированных на 54,3 %. Выводы. На основании анализа ВРС показано более выраженное неблагоприятное влияние производственной практики на менее адаптированных учащихся. Ключевые слова: учащиеся, производственная практика, вариабельность ритма сердца.

scholarly journals Power Spectral Analysis of Heart Rate Variability in Heavy Workers

1970 ◽  
Vol 7 (1) ◽  
pp. 15-19
Author(s):  
S Mithun ◽  
N Begum ◽  
MM Hossain ◽  
S Ferdousi ◽  
R Tabassum
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Power Spectral Analysis ◽  
Regular Physical Activity ◽  
Total Power ◽  
Socioeconomic Condition ◽  
Power Spectral ◽  
The University ◽  
Sedentary Subjects

Introduction: Sedentary life style deteriorates Cardiac autonomic nervous activities (CANA). Regular physical activity may improve CANA. Objective: Heart rate variability (HRV) was analyzed by Power Spectral method in heavy workers to find out the influence of regular physical activity on CANA. Methods: This cross sectional study was carried out on 30 heavy workers aged 28-50 years (study group), at the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU) over a period of 1 year. Simultaneously 30 sedentary workers of high socioeconomic status (group C) were studied to observe the influence of socioeconomic condition on heart rate variability (HRV). For comparison thirty age, sex, body mass index (BMI) and socioeconomic condition matched apparently healthy sedentary subjects (control) were also studied. The study subjects were selected from rickshaw-pullers living in the slum area nearby the university and the controls from fourth class employee of the university. Group C were selected from the doctors serving in the university and some from personal contacts. Total power, low frequency (LF) power, high frequency (HF) power, LF nu (neutralized unit), HF nu and LF/HF ratio were assessed and analyzed by a Polygraph. For statistical analysis, one way analysis of variance (ANOVA), Independent-samples t-test and Pearson's correlation coefficient tests were done. Results: Total power, HF power and HF nu were significantly (p<0.001) higher and LF power, LF nu and LF/HF ratio were significantly (p<0.001) lower in heavy workers than those of sedentary subjects. Total power and HF nu showed positive correlations and LF nu and LF/HF ratio showed negative correlation with duration of works per day but all these correlations were statistically non-significant. Conclusion: Regular physical activity improves cardiac autonomic nerve function status with a cardiac parasympathetic predominance. Key words: Power spectral analysis (PSA); cardiac autonomic nervous activities (CANA); heavy workers; sedentary workers DOI: http://dx.doi.org/10.3329/jafmc.v7i1.8620 JAFMC Bangladesh. Vol 7, No 1 (June) 2011; 15-19

scholarly journals Features of Change of Students 'Heart Rate Variability Indicators under the Influence of Mental and Physical Load

2020 ◽  
Vol 5 (6) ◽  
pp. 396-403
Author(s):  
Kochyna M. L. ◽  
◽  
A. A. Bila ◽  
I. G. Bondarenko ◽  
O. V. Bondarenko
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Cardiovascular System ◽  
Stress Index ◽  
Total Power ◽  
Signal Spectrum ◽  
Significant Deterioration ◽  
Low Frequencies ◽  
Upper Limit

The high level of mental and physical training loads on the body of students requires a good development of adaptive-compensatory mechanisms, stress resistance, psychological endurance. On the other hand, modern research indicates the low level of health of students and their maladaptation to high levels of stress, which determines the relevance of the study of changes in the functioning of the cardiovascular system to develop measures to correct adverse conditions and improve physical and mental health. The purpose of the work was to determine the features of changes in heart rate variability of students under the influence of mental and physical activity, taking into account gender characteristics. Material and methods. The article presents the results of a study of heart rate variability of 128 students (65 male and 63 female) of the Petro Mohyla Black Sea National University aged 17-25 years. All students had indicators of variability of resting heart rate, after mental and physical activity on short recordings of the cardio signal (2 minutes), obtained with the help of rhythm "MPFI rhythmograph-1" and EasyHRV software (LLC "ASTER-IT", Kharkiv). We used the proofreading method by Kryvonosov M. V. et al. (2001), which consisted of finding and selecting a specific letter in test tables for 20-25 minutes. Aerobic exercise consisted of running a distance of 2000 m on a rowing machine Concept-2 for 10 minutes. The research results were processed using descriptive statistics and non-parametric criteria. Results and discussion. The results of research showed that at rest almost all statistical and temporal indicators of heart rate variability of boys and girls were within the age norms. Mental load did not lead to a significant deterioration of the indicators studied, which indicated the stereotype of reaction. Exercises led to a significant deterioration in the cardiovascular system of students, as evidenced by a significant decrease relative to the lower limit of the norm of SDNN and RMSSD (almost four times); increase in the index of autonomic balance (above the upper limit of the norm by 90% for boys and 71% for girls); exceeding the upper limit of the norm twice with the indicators of vegetative rhythm and regulatory processes adequacy; an increase in the stress index of boys by 7 times and more than 5 times for girls, which led to exceeding the upper limit of the norm by more than 4-5 times; reduction of the total power of the cardio signal spectrum in boys by 9 times, and by 8 times in girls; power of the spectrum of very low frequencies twice, low frequencies by 5-8 times, high frequencies by 6-11 times. Conclusion. Low energy spectral parameters, as well as reducing the variability of cardio intervals and increasing the stress index are manifestations of hyperadaptive response to exercise and indicate low adaptive capacity of students, which requires the introduction of rehabilitation activities

scholarly journals Age-Related Change in Heart Rate Variability at Resting in Thai Professional Athletes

2020 ◽  
Vol 11 (3) ◽  
Author(s):  
Maninthorn Thabsuwan ◽  
Therdtham Chawrai ◽  
Chaladol Boonsri ◽  
Tepmanas Bupha-Intr
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Oxygen Consumption ◽  
Frequency Domain ◽  
Physical Activity Level ◽  
Maximal Oxygen Consumption ◽  
Activity Level ◽  
Age Related ◽  
Potential Marker

Background: Although regular exercise is beneficially acknowledged in promoting general health status, the cardiovascular risk of sudden cardiac death in highly training athletes has been reported. Unfortunately, the primary key factor in inducing cardiac problems in athletic populations is still questioned. Objectives: In the present study, we aim to determine factors that could affect the relationship between physical activity level and cardiac autonomic function in the Thai population. Methods: Forty participants were recruited and classified into three groups based on their physical activity level and sport profession, including sedentary men, elite handball players, and professional futsal players. In all participants, we measured predicted maximal oxygen consumption, time- and frequency- domain heart rate variability (HRV) variables at rest. Results: Results demonstrated a positive correlation between time-domain HRV and estimated maximal oxygen consumption, but not with frequency-domain HRV, in which athletes aged lower than 25 years old (18 - 25 years old) had a significantly higher in the standard deviation of normal RR intervals (SDNN) and root mean square of the successive differences (RMSSD) than that in age-matched sedentary subjects. Interestingly, athletes aged above 25 years old (25 - 32 years old) had lower SDNN and RMSSD with higher low frequency/high-frequency ratio than those athletes aged under 25. Since all athletes aged above 25 years old were world-class national futsal players, stress due to the competitive level might be another factor influencing cardiac autonomic activity in athletes. Conclusions: In conclusion, the study suggested the importance of age and stress exposure on cardiac autonomic regulation in elite athletes. The observed correlation also reinforced HRV as a potential marker in detecting abnormal changes in cardiac health even in an athletic population.

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