Validation of a heart-rate monitor for measuring a stress response in dairy cows

1994 ◽  
Vol 74 (3) ◽  
pp. 465-474 ◽  
Author(s):  
Hans Hopster ◽  
Harry J. Blokhuis
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dairy Cows ◽  
Pulse Generator ◽  
Farm Animals ◽  
Relevant Parameter ◽  
Heart Rate Monitor ◽  
Key Words Heart ◽  
Key Words Heart Rate ◽  
Highly Correlated

In three experiments, a commercial non-invasive heart-rate monitor, Polar® Sport Tester (PST), was validated for use with dairy cows. First, 10 monitors were tested using a pulse generator, which produced pulses at levels between 30 and 240 bpm. PST values and generated beats were highly correlated (r = 0.97) but with varying delay (5–55 s), depending on pulse-rate level.In a second experiment, 10 dairy cows were quietly standing or exercising on a treadmill while their heart rates were recorded by direct-wire electrocardiograph (ECG) as well as the PST. Correlations between ECG and PST values during standing (0.88) and exercising (0.72) were significant and differed between cows. During standing, inter-beat interval and PST standard deviations were significantly correlated (Rsp = 0.76), as were their coefficients of variation (Rsp = 0.89).The third experiment showed that the heart rate of 10 dairy cows increased rapidly immediately after an individual was isolated from the herd. Cows showed no obvious signs of being hampered by the equipment during the 1-h trials.Change in heart rate may be a relevant parameter for studying an animal's response to a stressor. As heart-rate variability is thought to serve as an important mechanism for adaptability in humans, this aspect needs further attention in farm animals. The PST is suitable for measuring both heart rate and heart-rate variability in dairy cows. Key words: Heart rate, dairy cows, stress, treadmill

Features of changes in heart rate variability indices in driving school cadets with different levels of preparedness

2021 ◽  
Author(s):  
S.E. Bebinov ◽  
O.N. Krivoshchekova ◽  
A.V. Nechaev
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Simulator Training ◽  
Training Level ◽  
Driver Training ◽  
Traffic Conditions ◽  
Key Words Heart ◽  
Key Words Heart Rate ◽  
Regulatory Systems ◽  
Different Levels

The research was carried out on two independent experimental groups of boys and girls. The first was observed in traffic conditions, the second during the period of auto-simulator training. The HRV indices were determined: HR - heart rate, IN - index of tension of regulatory systems, AMo - amplitude of the mode, LF/HF - index of vagosympathetic interaction. A pronounced sympathetic reaction of more prepared cadets to the training load with the subsequent restoration of the studied characteristics was revealed. Key words: heart rate variability, autonomic regulation, vagosympathetic interaction, driver training, level of preparedness.

Assessment of the adaptive state of students based on the analysis of heart rate variability indicators

2021 ◽  
Author(s):  
N.V. Mishchenko ◽  
S.V. Lyalyakin ◽  
L.A. Shirkin ◽  
E.S. Knyazeva ◽  
T.A. Trifonova
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Key Words ◽  
The State ◽  
Key Words Heart ◽  
Key Words Heart Rate ◽  
Regulatory Systems ◽  
Young Students

In the course of the study, the adaptive state of VlSU students was assessed by temporal, spectral, cardiointervalographic and integral indicators of heart rate variability. The characteristic of the state of the regulatory systems of students is given. The obtained results can serve as a certain addition to the understanding of the peculiarities of the process of adaptation of young students in the conditions of studying at higher school. Key words: heart rate variability (HRV), students, adaptation, regulatory systems, sympathetic and parasympathetic influence.

scholarly journals Influence of postoperative pain and use of NSAID on heart rate variability of dairy cows

2018 ◽  
Vol 85 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Lilli Frondelius ◽  
Juha Hietaoja ◽  
Matti Pastell ◽  
Laura Hänninen ◽  
Paula Anttila ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Postoperative Pain ◽  
Dairy Cows ◽  
Farm Animals ◽  
Control Group ◽  
Nsaid Treatment ◽  
Promising Tool ◽  
Post Operative Pain ◽  
Production Animals

This Research Communication describes the effect of post-operative pain and non-steroidal anti-inflammatory drug (NSAID) treatment on heart rate variability (HRV) of dairy cows. Postoperative pain in farm animals is often left untreated, and HRV could be a promising tool for assessing pain. The aim of this study was to assess if postoperative state after subcutaneous surgery affects HRV in dairy cows and to determine whether this could be modulated by NSAID. Nine cows were inserted with an implantable electrocardiograph logger. Cows were divided into the NSAID treatment group and the control group. The cows in the NSAID group had higher HRV than the control group, indicating a higher sympathetic activity in control animals, most likely due to untreated post-operative pain. Besides the ethical need for treating pain in production animals, ongoing pain has an adverse effect on animal productivity. Thus post-operative pain alleviation is recommended.

Blunted Cardiac Autonomic Responsiveness to Hypoxemic Stress in Healthy Older Adults

2003 ◽  
Vol 28 (4) ◽  
pp. 518-535 ◽  
Author(s):  
S. Deborah Lucy ◽  
John M. Kowalchuk ◽  
Richard L. Hughson ◽  
Donald H. Paterson ◽  
David A. Cunningham
Keyword(s):  
Older Adults ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Spectral Power ◽  
Coarse Graining ◽  
Key Words Heart ◽  
Key Words Heart Rate ◽  
Age Related ◽  
End Tidal

Supine resting cardiac dynamics and responses to steady-state hypoxemia were investigated in six healthy older (59-72 yrs) adults using coarse-graining spectral analysis of heart rate variability (HRV) and were compared to six young (22-29 yrs) adults studied previously (Lucy et al<normal + trebuchet ms char,12 pt char, black char, condensed by 0.05 pt char>.,</normal + trebuchet ms char,12 pt char, black char, condensed by 0.05 pt char> 2000). End-tidal carbon dioxide pressure (PETCO2) was clamped at 1-2 mmHg above the usual resting value for 11 min of euoxia (PETO2100 mmHg), followed by 22 min of hypoxia (PETO2 55 mmHg). During euoxia, vagally mediated harmonic and fractal power of HRV of older adults was minimal. Hypoxia induced an increase in ventilation, p < 0.01, and heart rate, p < 0.05. The heart rate increase (mean ± SE) of 0.23 ± 0.08 beats•min−1 per 1% decrease in arterial O2 saturation was 25% of that demonstrated previously by young subjects, p < 0.001. In older adults, HRV spectral power remained unchanged during hypoxia, providing further evidence of an age-related blunting of cardiac autonomic function. Key words: heart rate variability, coarse-graining spectral analysis, cardiac vagal control, acute isocapnic hypoxia, dynamic end-tidal forcing (DEF) technique

Heart rate and heart rate variability in multiparous dairy cows with unassisted calvings in the periparturient period

2015 ◽  
Vol 139 ◽  
pp. 281-289 ◽  
Author(s):  
L. Kovács ◽  
J. Tőzsér ◽  
F.L. Kézér ◽  
F. Ruff ◽  
M. Aubin-Wodala ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dairy Cows ◽  
Periparturient Period

scholarly journals Heart Rate and Heart Rate Variability in Dairy Cows with Different Temperament and Behavioural Reactivity to Humans

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0136294 ◽  
Author(s):  
Levente Kovács ◽  
Fruzsina Luca Kézér ◽  
János Tőzsér ◽  
Ottó Szenci ◽  
Péter Póti ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dairy Cows

Comparison of Polar®RS800G3™heart rate monitor with Polar®S810i™and electrocardiogram to obtain the series of RR intervals and analysis of heart rate variability at rest

2014 ◽  
Vol 36 (2) ◽  
pp. 112-117 ◽  
Author(s):  
Marianne Penachini da Costa de Rezende Barbosa ◽  
Natália Turri da Silva ◽  
Fábio Mícolis de Azevedo ◽  
Carlos Marcelo Pastre ◽  
Luiz Carlos Marques Vanderlei
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Heart Rate Monitor ◽  
Rr Intervals

scholarly journals Utilização de cardiofrequencímetros para mensuração da Variabilidade da Frequência Cardíaca no repouso: uma revisão de literatura

2021 ◽  
Vol 10 (11) ◽  
pp. e575101120026
Author(s):  
Patrícia Castro ◽  
Tainah de Paula Lima ◽  
Roberto Miranda Ramos Costa ◽  
Felipe Amorim da Cunha ◽  
Patrícia dos Santos Vigário
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Autonomic Control ◽  
Heart Rate Monitor ◽  
Cardiac Autonomic Control

A Variabilidade da Frequência Cardíaca (VFC) é um método não-invasivo utilizado para estimar o controle autonômico cardíaco que pode ser mensurada através do eletrocardiograma (ECG), método padrão-ouro. Dispositivos portáteis que tragam maior praticidade e com menor custo que o ECG, como os cardiofrequencímetros, são uma alternativa mais conveniente para a mensuração da VFC na prática clínica, porém é necessário que seus resultados sejam validados em diferentes populações. Objetivo: Analisar os estudos realizados sobre a validade dos cardiofrequencímetros em comparação com o ECG para mensuração da VFC no repouso em diferentes populações. Metodologia: Trata-se de uma revisão de literatura onde foram utilizados estudos publicados na base de dados do Pubmed e Scielo, sem limite inferior da data de publicação até o ano de 2021. Foram utilizados os seguintes descritores nos idiomas inglês e português: "heart rate variability" ou "cardiac autonomic control" ou "Electrocardiography" ou "Heart Rate", sendo associados aos termos “heart rate monitor” e "reproducibility" ou “validity” ou “agreement”. Resultados e discussão: Foram encontrados 15 estudos que avaliaram a validade de diferentes modelos de cardiofrequencímetros para a mensuração da VFC no repouso, em comparação com o ECG, em diferentes populações (adultos saudáveis, atletas, idosos, crianças, adolescentes obesos, indivíduos com lesão medular e idosos), assim como sua confiabilidade no teste-reteste de alguns dispositivos. Conclusão: Os estudos demonstraram que os diferentes modelos de cardiofrequencímetro podem ser utilizados como uma alternativa ao ECG para a mensuração da VFC, mesmo em diferentes populações.

On the validity of using the Polar RS800 heart rate monitor for heart rate variability research

2012 ◽  
Vol 112 (12) ◽  
pp. 4179-4180 ◽  
Author(s):  
Daniel S. Quintana ◽  
James A. J. Heathers ◽  
Andrew H. Kemp
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Heart Rate Monitor
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