The effect of the presence of heart-rate monitors on the behaviour of group housed sows

1996 ◽  
Vol 1996 ◽  
pp. 193-193
Author(s):  
P.J. Baynes ◽  
K. Graham ◽  
E.J. Hunter ◽  
H.J. Guise ◽  
R.H.C. Penny

Heart rate has been successfully recorded in sheep, deer and pigs (Baldock and Sibly, (1986) Price, Sibly and Davies, (1993) Webster et al, 1995). This work has shown that resting heart rate can increase in stressful situations. Being able to record heart rates of group-housed sows would complement behavioural observations, if it could be shown that the presence of the monitor did not alter group behaviour. The aim of this study was to assess in a group of active sows, the effect of the presence of a heart rate monitor on behaviour.

Author(s):  
J.N. Marchant ◽  
A.R.Rudd

The scientific assessment of farm animal welfare requires an amalgam of different measures of both physiology and behaviour. Behavioural measures are relatively easy to obtain but non-invasive measures of internal physiology are somewhat harder to achieve. An increase in the use of applied physiology in training regimes of human athletes, has led to an improved technology of heart rate monitors, making the measurement of heart rates painless and easy to record.The objective of this experiment was to use a human heart rate monitor to investigate differences in heart rate response at feeding between sows housed in three different dry sow housing conditions. Schouten et al (1991) have demonstrated differences in heart rate response at feeding between loose-housed and tethered sows. In the study reported here, stall-housed sows were compared with sows housed in small groups and sows housed in a large group with an Electronic Feeder System (EFS).


2002 ◽  
Vol 94 (3) ◽  
pp. 720-722
Author(s):  
Matthew S. Wiggins

This study was used to assess the premise that lower resting heart rates should be associated with higher scores on self-efficacy for exercisers. A total of 64 participants, 29 men and 35 women ranging in age from 18 to 38 years old ( M = 23.22, SD = 4.19), currently participating in an exercise program at a fitness center, were assessed using the Exercise Specific Self-efficacy Scale to measure general individual self-efficacy, along with obtaining resting heart rates. Participants were separated into three different groups based on individual resting heart-rate values. Results for a 2 (sex) by 3 (heart rate) two-way analysis of variance indicated a significant difference in self-efficacy scores ( F2.58 = 3.24, p<.05) among the three groups. No interaction or main effect for sex was found.


2010 ◽  
Vol 16 (2) ◽  
pp. 79-83
Author(s):  
Ting Shiuan CHIOU ◽  
Ming Ta YANG ◽  
Kuei Hui CHAN

LANGUAGE NOTE | Document text in English; abstract also in Chinese. The purpose of this study was to collect heart rates of subjects by the polar team system heart rate monitor during the championship finals (3 rounds). Eight junior high school indoor tug-of-war athletes participated in the study. The percentage of heart rate reserve (%HRR) was calculated. During the competitions, the lowest heart rate of subjects were 34.5±6.4%HRR ~ 50.8±7.0%HRR. The highest heart rate of subjects were 66.7±6.5%HRR ~ 87.1±6.3%HRR and presented at the last stage of games for a few seconds. In conclusion, when teenage indoor tug-of-war player face contender of the weakness level, their intensity is 52.7±13.4 %HRR. Moreover, when they face contender the same level, their intensity is 72.7 ~ 13.1%HRR. 本研究以8位青少年室內八人制拔河選手為對象,並利用心跳監控器於正式拔河錦標賽決賽中,收集受測者與3場對手比賽時 的全程心跳率,並將心跳率數值換算為儲備心跳率百分比,以評估拔河比賽的運動強度。結果發現,比賽期間受試者最低心跳率介於34.5±6.4 ~ 50.8±7.0%HRR,最高心跳率介於66.7±6.5 ~ 87.1±6.3%HRR,受試者之最高心跳率出現於比賽最後階段且只維持數秒鐘。本研究結果顯示,青少年室內八人制拔河比賽在面對較弱的對手時之運動強度為52.7±13.4%HRR,而對上實力相當的對手時則為72.7±13.1%HRR。


1998 ◽  
Vol 30 (Supplement) ◽  
pp. 251 ◽  
Author(s):  
R. M.T. Laukkanen ◽  
S. Maijanen ◽  
M. P. Tulppo

Diagnostics ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 391 ◽  
Author(s):  
Robert Gajda

This study describes a triathlete with effort-provoked atrioventricular nodal re-entrant tachycardia (AVNRT), diagnosed six years ago, who ineffectively controlled his training load via heart-rate monitors (HRM) to avoid tachyarrhythmia. Of the 1800 workouts recorded for 6 years on HRMs, we found 45 tachyarrhythmias, which forced the athlete to stop exercising. In three of them, AVNRT was simultaneously confirmed by a Holter electrocardiogram (ECG). Tachyarrhythmias occurred in different phases (after the 2nd–131st minutes, median: 29th minute) and frequencies (3–8, average: 6.5 times/year), characterized by different heart rates (HR) (150–227 beats per minute (bpm), median: 187 bpm) and duration (10–186, median: 40 s). Tachyarrhythmia appeared both unexpectedly in the initial stages of training as well as quite predictably during prolonged submaximal exercise—but without rigid rules. Tachyarrhythmias during cycling were more intensive (200 vs. 162 bpm, p = 0.0004) and occurred later (41 vs. 10 min, p = 0.0007) than those during running (only one noticed but not recorded during swimming). We noticed a tendency (p = 0.1748) towards the decreasing duration time of tachycardias (2014–2015: 60 s; 2016–2017: 50 s; 2018–later: 37 s). The amateur athlete tolerated the tachycardic episodes quite well and the ECG test and echocardiography were normal. In the studied case, the HRM was a useful diagnostic tool for detecting symptomatic arrhythmia; however, no change in the amount, phase of training, speed, or duration of exercise-stimulated tachyarrhythmia was observed.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M D Flannery ◽  
F Sully ◽  
K Janssens ◽  
G Morris ◽  
J Kalman ◽  
...  

Abstract Background It is well known that athletes and in particular endurance athletes have lower resting heart rates than non-athletes. This has generally been considered a healthy adaptation. Traditionally this was thought be due to increased vagal tone. Several studies have shown that endurance athletes continue to have lower heart rates in the absence of autonomic influence suggesting bradycardia is due to intrinsic changes within the heart. A subset of endurance athletes have very low heart rates with Tour de France cyclists having described heart rates in the 30s. It is unclear whether in these elite athletes with very low heart rates the profound bradycardia is due to autonomic influence or intrinsic changes within the heart. Aim The aim of this study was to determine if extreme bradycardia in athletes is due to excess vagal tone or more profound intrinsic changes within the heart. Methods We recruited three cohorts for this study: non-athlete controls (NA), endurance athletes with a documented resting heart rate >40 (EA) and endurance athletes with a resting heart rate <40 (BA). All participants underwent baseline testing including ECG, echocardiography and VO2 max testing. All participants came back on a second occasion for treatment with dual autonomic blockade (DAB) to determine intrinsic heart rate in the following manner. After resting supine for five minutes resting heart rate was measured. Participants were then administered 0.04mg/kg of intravenous atropine. After five minutes participants were then administered 0.05mg/kg of intravenous metoprolol. This was repeated every five minutes until there was no further drop in heart rate or 0.2mg/kg had been administered. The resting heart rate at this stage was recorded as the intrinsic heart rate. Parasympathetic blockade was confirmed by lack of response to Valsalva manoeuvre and sympathetic blockade was confirmed by lack of response to metoprolol. VO2 max testing was then performed to determine maximum heart rate. Results 9 NA (7 male), 10 EA (8 male) and 5 BA (4 male) participated in this study. The average age was similar in all groups (NA 32.9y, EA 32.4y, BA 31.4y). The average resting heart rate was 71.7 in the NA group, 48.3 in the EA group and 41.6 in the BA group (p<0.05 for comparisons between all three groups). Following dual autonomic blockade resting heart rate was 86.0 in the NA group, 76.9 in the EA group and 64.4 in the BA group (p<0.05 for comparisons between all three groups). Maximum heart rate under DAB was 140.1 in the NA group, 138.0 in the EA group and 140.4 in the BA group. These differences were not significant. Conclusion In athletes with very low heart rates, bradycardia is due to more profound intrinsic changes within the heart. Acknowledgement/Funding NHMRC Project Grant


2017 ◽  
Vol 35 (11-12) ◽  
pp. 2271-2296 ◽  
Author(s):  
Danielle Boisvert ◽  
Jessica Wells ◽  
Todd Armstrong ◽  
Richard H. Lewis ◽  
Matthias Woeckener ◽  
...  

There is consistent evidence to suggest that individuals with low resting heart rate are more likely to engage in a variety of antisocial behaviors. The present study examines whether this finding can be extended to stalking perpetration. Drawing from fearlessness theory and stimulation-seeking theory, as well as conceptual work of Meloy and Fisher, we find that individuals with low resting heart rates had significantly greater odds of engaging in stalking behavior, net of controls for sex, age, race, self-control, parental affection, delinquent peers, attitudes/beliefs toward crime, and aggression. When disaggregated by sex, the heart rate–stalking relationship was found to be significant for males, but not for females. The implications of these findings are discussed from a biosocial perspective.


2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Simone Fiuza Regaçone ◽  
Daiane Damaris Baptista de Lima ◽  
Vitor Engrácia Valenti ◽  
Ana Cláudia Figueiredo Frizzo

The objective of this study was to evaluate the association between rest heart rate (HR) and the components of the auditory evoked-related potentials (ERPs) at rest in women. We investigated 21 healthy female university students between 18 and 24 years old. We performed complete audiological evaluation and measurement of heart rate for 10 minutes at rest (heart rate monitor Polar RS800CX) and performed ERPs analysis (discrepancy in frequency and duration). There was a moderate negative correlation of the N1 and P3a with rest HR and a strong positive correlation of the P2 and N2 components with rest HR. Larger components of the ERP are associated with higher rest HR.


2018 ◽  
Vol 25 (14) ◽  
pp. 1485-1495 ◽  
Author(s):  
Olga Archangelidi ◽  
Mar Pujades-Rodriguez ◽  
Adam Timmis ◽  
Xavier Jouven ◽  
Spiros Denaxas ◽  
...  

Background In healthy population cohorts, resting heart rate above 90 bpm is associated with mortality from coronary heart disease, but it is not clear whether associations are present at lower heart rates or whether these associations differ between women. Methods The CALIBER resource of linked electronic health records from primary care, hospitalisations, myocardial infarction registry and cause-specific mortality in the UK was used to assess associations between resting heart rate and 12 fatal and non-fatal coronary, cardiac, cerebral and peripheral vascular cardiovascular diseases and death using Cox proportional hazard models. Results Among 233,970 patients, 29,690 fatal and non-fatal events occurred. Fully adjusted models showed that resting heart rate was not associated in men or women with cerebrovascular events. In men a resting heart rate of 70–79 bpm (29.1% of all men) versus less than 60 bpm was associated with an increased risk of heart failure (hazard ratio (HR) 1.65, 95% confidence interval (CI) 1.26–2.16), unheralded coronary death (HR 1.65, 95% CI 1.13–2.41), total cardiovascular events (HR 1.22, 95% CI 1.15–1.28) and all-cause mortality (HR 1.39, 95% CI 1.22–1.58). Women with a higher resting heart rate level of 80–89 bpm versus 60 bpm had a higher risk of total cardiovascular disease events (HR 1.17, 95% CI 1.07–1.24) and all-cause mortality (HR 1.21, 95% CI 1.07–1.35) compared to a resting heart rate less than 60 bpm. The risk was also present at higher heart rates (>90 bpm) for heart failure and sudden cardiac death. Conclusions A resting heart rate that clinicians currently consider as ‘normal’ in the general population is specifically associated with the incidence of certain major cardiovascular diseases and death, with the risk starting at lower resting heart rate levels in men compared to women. Further research is required to evaluate whether interventions to lower resting heart rate are warranted to prevent disease. The study is registered at: clinicaltrials.gov (ID: NCT01947361).


2000 ◽  
Vol 14 (3) ◽  
pp. 159-164 ◽  
Author(s):  
Jeffrey L. Goodie ◽  
Kevin T. Larkin ◽  
Scott Schauss

Abstract The Polar Vantage XL heart rate monitor provides an ambulatory, inexpensive method of continuously measuring heart rate. To examine the validity of the Polar monitor for measuring heart rate during resting periods and while engaging in two stressful tasks, 30 students participated in a 1-hour laboratory session. Heart rates were measured simultaneously using the Polar monitor and electrocardiography (ECG) during a hand grip exercise and a mental arithmetic task, each preceded by a 4-min resting period. Within-subject correlations between the two devices were significant (mean r = 0.98, P < .001). All correlations, except for three participants, exceeded r = 0.90. Between-task correlation analyses revealed high correlations (i. e., rs ≥ 0.98) between the Polar monitor and ECG. The Polar monitor obtained readings that were slightly, though significantly higher than readings obtained using ECG. The correspondence between observed mean heart rates from the Polar monitor and ECG suggest that the Polar monitor provides a valid measure of heart rate during stationary laboratory tasks.


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