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| Registros recuperados: 37 | |
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| Anttila, Katja; Mauduit, Florian; Le Floch, Stephane; Claireaux, Guy; Nikinmaa, Mikko. |
| Oil spills pose a threat to aquatic organisms. However, the physiological effects of crude oil on cardiac function and on thermal tolerance of juvenile fish are still poorly understood. Consequently, in this paper, we will present results of two separate experiments where we exposed juvenile rainbow trout and European sea bass to crude oil and made cardiac thermal tolerances and maximum heart rate (fHmax) measurements after 1 week (rainbow trout) and 6-month recovery (sea bass). In both species, the fHmax was lower in crude oil-exposed fish than in the control ones at temperatures below the optimum but this difference disappeared at higher temperatures. More importantly, the oil-exposed fish had significantly higher Arrhenius break point temperature for... |
| Tipo: Text |
Palavras-chave: Arrhenius break point temperature; Critical thermalmaximum; CTMAX; Fish; Heart rate; Oil spill; PAH. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00391/50271/50970.pdf |
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| Lefrancois, Christelle; Claireaux, Guy. |
| The objective of this study was to quantify the constraints exerted by temperature and oxygenation on both metabolic scope and scope for heart rate of the common sole Solea solea. We exposed sole to a large range of temperature and oxygenation conditions and a modelling procedure was implemented to describe metabolic and cardiac responses. Standard metabolic rate (SMR) rose exponentially from 4 to 24degreesC, whereas active metabolic rate (AMR) increased from 55.4 to 159.2 mgO(2) kg(-1) h(-1) between 4 and 19.7degreesC, and then dropped to 129.9 mgO(2) kg(-1) h(-1) at 24degreesC. In parallel, optimal temperature for maximising metabolic scope, defined as the difference between AMR and SMR, was estimated to 18.8degreesC. Active heart rates increased... |
| Tipo: Text |
Palavras-chave: Metabolic scope; Heart rate; Biological performance; Temperature; Oxygen; Common sole. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00000/10690/7594.pdf |
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| Blasco, Felipe R.; Mckenzie, David J.; Taylor, Edwin W.; Rantin, F. Tadeu. |
| Clarias gariepinus is a facultative air-breathing catfish that exhibits changes in heart rate (f(H)) associated with air breaths (AB). A transient bradycardia prior to the AB is followed by sustained tachycardia during breath-hold. This study evaluated air-breathing and cardiac responses to sustained aerobic exercise in juveniles (total length similar to 20 cm), and how exercise influenced variations in f(H) associated with AB. In particular, it investigated the role of adrenergic and cholinergic control in cardiac responses, and effects of pharmacological abolition of this control on air-breathing responses. Sustained exercise at 15, 30 and 45 cm s(-1) in a swim tunnel caused significant increases in f(AB) and f(H), from approximately 5 breaths h(-1) and... |
| Tipo: Text |
Palavras-chave: Adrenergic tone; Cholinergic tone; Heart rate; Swimming. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00367/47821/74728.pdf |
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| Rexhepi,Agron M; Brestovci,Behlul; Krasniqi,Asllan. |
| The purpose of this study was to study, observe, and clarify the dynamics of physical growth, as well as changes of some morphometrical and physiological variables of Kosovo population. 17,894 males from Kosovo between 6 and 51 years of age and older, were measured:. body height, body weight, BMI, systolic pressure, diastolic pressure, heart rate, and VO max were recorded. The measurement data were processed through these descriptive statistical parameters: Mean, Standard-Deviation and the Coefficient of Variation, SD shows the similar dispersion of results between one age and another. CV signifies the reliability of the measurements that were carried out. The curve of body height for individuals between 6 and 17 years of age shows increases, for... |
| Tipo: Journal article |
Palavras-chave: Body height; Body weight; BMI; Systolic pressure; Diastolic pressure; Heart rate; VO2max. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100018 |
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| Barker, Anna B.E.; Warren-Smith, A.K.. |
| Anecdotal evidence suggests that a horse’s prior fitness level has an effect on the horse’s ability to return to that previous level of fitness. This trial aimed to test this assumption which would benefit horse trainers to create individual fitness programs for horses. Standardised exercise testing was used to compare the progress of two groups of horses during weeks three and seven of a 14-week training program. Group A had undergone a similar training program twelve months previously and Group B had not. Plasma lactate samples and heart rate monitoring were used to assess the levels of fitness of the horses. Analysis of variance showed that there was no significant difference in post-exercise plasma lactate concentration between the groups. The horses... |
| Tipo: Article |
Palavras-chave: Horse; Fitness training; Heart rate; Blood lactate; Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/123137 |
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| Mutibvu,T; Chimonyo,M; Halimani,TE. |
| ABSTRACT Free-range chicken production has significantly increased in recent years and it often entails exposing birds to cyclic environmental conditions. The objective of the current study was to investigate the effect of bird strain and sex, and rearing system on the physiological responses of Potchefstroom Koekoek (PK), Ovambo (OV) and Naked Neck (NN) chickens reared in a hot environment. Body weight (BW), rectal temperature (RT), respiratory rate (RR) and heart rate (HR) were determined weekly for 4 weeks, in 3 slow-growing chicken strains under cyclic environmental conditions. A total of 288, 20-week old Potchefstroom Koekoek (PK), Ovambo (OV) and Naked Neck (NN) chickens were separated by sex and allocated to extensive and intensive rearing systems.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extensive; Intensive; Respiratory rate; Heart rate; Strain; Temperature. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400567 |
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| Soheili-Fard, Farshad; Rahbar, Amir; Marzban, Afshin. |
| Work-related Musculoskeletal Disorders (WMSDs) are a leading cause of disability, work time loss and economic loss in both industrialized and developing countries. WMSDs include muscles, bones, joints, nerves and blood vessel disorders. According to the studies done by some researchers, lack of harmony between technology and the technology users in workplace can degrade the product quality and increase the injuries. In the present study, an ergonomic investigation was conducted and the position and posture of the workers of tea factories were evaluated. REBA and OWAS methods were used for analyzing the postures. The energy expenditure of workers was calculated by heart rate monitoring. In this study, 6 tea factories were considered and totally 48 workers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ergonomic; Tea factory; Heart rate; Withering; Grading; Curling. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4096 |
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| HOU,LIJUAN; LI,KE; HU,YANRU; BIAN,YIJUN; JI,WEI; SHI,KAIXUAN; LI,YITING; CHEN,MENGJIAO; LI,JIAXIN; LIU,XIAOLI; QIAO,DECAI. |
| Abstract: The mechanism behind exercise-induced fatigue is a significant topic in the field of sports physiology. Therefore, establishing and evaluating an acute exercise-induced fatigue animal model that explores the limits of the motor system may provide greater insight into these mechanisms. Heart rate is an important quantitative parameter that accurately reflects the immediate change in physical function due to exercise load. And there is likely to be an important correlation between heart rate and behavioral performance. In this study, changes in heart rate and behavioral indexes during exercise-induced fatigue were quantitatively analyzed in rats using heart rate telemetry and video methods respectively. The behavioral indexes were used as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exercise-induced fatigue; Animal model; Treadmill running; Heart rate. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700624 |
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| Ribeiro,A.P.; Junior,D.P.; Champion,T.; Brunetto,M.A.; Camacho,A.A.; Laus,J.L.. |
| The effects of topical levobunolol with the fixed combination of 2% dorzolamide-0.5% timolol and the association of 2% dorzolamide with 0.5% levobunolol on intraocular pressure (IOP), pupil size (PS), heart rate (HR), and conjunctival hyperemia in eighteen halthy cats were investigated and compared. IOP, PS, HR, and conjuntival hyperemia were daily recorded at three times (9a.m., 2p.m., and 6p.m.). Three groups were formed (n=6), and one eye of each animal was randomly selected and treated with topical levobunolol (L), or commercial combination of dorzolamide-timolol (DT), or the association of dorzolamide with levobunolol (DL). The first day (0) consisted of recording of baseline values. On the next four consecutive days, drugs were instilled at 8a.m. and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cat; Levobunolol; Beta-blockers; Intraocular pressure; Pupil size; Heart rate. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000500002 |
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| Cruz,R.K.S.; Alfonso,A.; Lourenço,M.L.G.; Souza,F.F.; Oba,E.; Ramos,P.R.R.; Chiacchio,S.B.. |
| ABSTRACT The aim of this study was to evaluate newborn foals stress in the first 48 hours of life. Heart rate (HR), heart rate variability (HRV) and serum cortisol concentrations, blood glucose, and lactate were determined in foals (n = 20, Paint Horse). Cortisol concentrations decreased significantly between four and 48 hours, with the highest concentration at 4 hours after birth. Positive correlations between cortisol and lactate occurred between 12 and 16 hours. And there was a negative correlation between cortisol and lactate 4 hours after birth. Among the values obtained for HR, there was significantly difference between the the value obtained at twelve hours of life moment and all the other moments measured, the highest values were at birth, 24 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Equine neonate; Cortisol; Heart rate; Heart rate variability. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400785 |
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| Santarosa,B.P.; Lourenço,M.L.G.; Dantas,G.N.; Ulian,C.M.V.; Heckler,M.C.T.; Sudano,M.J.; Gonçalves,R.C.; Chiacchio,S.B.. |
| ABSTRACT There are studies on electrocardiogram (ECG) in several breeds of horses, which highlights the growing importance of cardiology in this species. But few authors have addressed the influence of pregnancy on the cardiac physiology of the mare, and specifically, there are no studies on the Mini-horse breed, as well as no correlation of body weight (BW) and heart rate (HR) with electrocardiographic parameters in this breed. The aims of this study were to determine the effects of pregnancy on ECG parameters and to examine the relationships between these variables and body weight (BW) and heart rate (HR). A total of 203 animals were used, including 143 females (66 pregnant) and 60 males. Electrocardiographic examinations were performed by computerized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Horse; Body weight; Cardiology; Heart rate; Pregnancy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300579 |
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| Padua,I.R.M.; Ribeiro,A.P.; Padua,P.P.M.; Guimarães,P.J.; Silva,M.L.; Piso,D.Y.T.; Martins,B.; Aldrovani,M.; Semolin,L.M.S.; Camacho,A.A.; Laus,J.L.. |
| ABSTRACT The aim of this study was to evaluate changes in intraocular pressure (IOP), pupil size (PS), blood pressure (BP), heart rate (HR), and ECG variables (Pms wave PmV, PR interval, QRS complex, RMV wave and QT intervals) over time during the instillation of 0.5% timolol, 0.5% levobunolol and 0.5% apraclonidine in clinically normal dogs. Ten adult beagles were used. Baseline values were measured at 8a.m., 2p.m. and 8p.m., for three consecutive days. A waiting period of 10 days between the administrations of each drug was established. For 15 consecutive days, the drug being tested was instilled in one eye of each dog twice a day (7a.m. and 7p.m.). The parameters were evaluated at the aforementioned times on days 3, 6, 9, 12 and 15. Data were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dog; Timolol maleate; Levobunolol; Apraclonidine; Intraocular pressure; Pupil size; Heart rate; Blood pressure. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300641 |
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| Lopes,H.F.; Silva,H.B.; Consolim-Colombo,F.M.; Barreto Filho,J.A.S.; Riccio,G.M.G.; Giorgi,D.M.A.; Krieger,E.M.. |
| Although a slightly elevated office blood pressure (BP) has been reported in several studies, little is known about the prolonged resting blood pressure, heart rate (HR) and baroreflex sensitivity (BRS) of prehypertensive subjects with a family history of hypertension. Office blood pressure, prolonged resting (1 h) BP and HR were measured in 25 young normotensives with a positive family history of hypertension (FH+) and 25 young normotensives with a negative family history of hypertension (FH-), matched for age, sex, and body mass index. After BP and HR measurements, blood samples were collected for the determination of norepinephrine, plasma renin activity and aldosterone levels, and baroreflex sensitivity was then tested. Casual BP, prolonged resting BP... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heart rate; Blood pressure; Baroreflex sensitivity; Family history of hypertension. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000100007 |
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| Duarte,D.P.F.; Jaguaribe,A.M.; Pedrosa,M.A.C.; Clementino,A.C.C.R.; Barbosa,A.A.; Silva,A.F.V.; Gilmore,D.P.; Da Costa,C.P.. |
| Heart rate (HR) and systolic (SBP), diastolic (DBP) and mean (MBP) blood pressure were recorded by biotelemetry in nine conscious unrestrained sloths for 1 min every 15 min over a 24-h period. The animals were allowed to freely move in an acoustically isolated and temperature-controlled (24 ± 1ºC) experimental room with light-dark cycle (12/12 h). Behavior was closely monitored through a unidirectional visor and classified as resting (sitting or suspended), feeding (chewing and swallowing embauba leaves, Cecropia adenops), or locomotor activity around the tree trunk or on the room floor. Locomotor activity caused statistically significant increases in SBP (+8%, from 121 ± 22 to 131 ± 18 mmHg), DBP (+7%, from 86 ± 17 to 92 ± 10 mmHg), MBP (+8%, from 97 ± 19... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Tree-toed sloth; Heart rate; Blood pressure; Locomotor activity; Feeding behavior. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001000016 |
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| Registros recuperados: 37 | |
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