Daily Rhythms of Blood Pressure, Heart Rate, and Body Temperature in Fed and Fasted Male Dogs

Piccione, Giuseppe; Caola, G.; Refinetti, Roberto

doi:10.1111/j.1439-0442.2005.00758.x

Cited by 37 publications

(24 citation statements)

References 44 publications

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“…Ten-day-old lamb and foal both show a circadian rhythm of body temperature. This rhythmicity is lacking in blood pressure, as previously observed for heart rate and respiratory rate (Piccione et al, 2005b), may be caused by different control systems, and probably correlates with the incomplete anatomical-functional development of the cardiovascular system.…”

Section: Discussionmentioning

confidence: 81%

Chronobiologic blood pressure assessment: Maturation of the daily rhythm in newborn foals

et al. 2008

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Circadian rhythmicity of physiological processes in animals has been described for some variables. In order to investigate the daily rhythmicity of blood pressure, seven foals (Equus caballus) were used for 40 days after birth. Measurements of blood pressure were done by means of an oscillometric apparatus (Argus TM-7, Schiller, Barr Switzerland) with the foals in a standing position and the cuff placed around the tail. Blood pressure was recorded twice a day, 1 hour before dawn and 1 hour before dusk for the first 10 days of life, every 2 days from the 11 th to the 32 nd day, on the 36 th and on the 40 th day. Two-way repeated measures analysis of variance (ANOVA) were used to determine statistically significant differences between the mean values recorded at dawn and dusk during the study. Analysis of variance showed a significant effect of time (p<0.0001), during the first 40 days of life. This study confirms a strong correlation between age and blood pressure in horse and the absence of blood pressure maturation in foals 40 days old. The results on the maturation of the daily rhythm of blood pressure in foals is a contribution to the study of the development of circadian rhythms in mammals. These results are also useful for the chronophysiological assessment of blood pressure in the horse.

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Section: Discussionmentioning

confidence: 81%

Chronobiologic blood pressure assessment: Maturation of the daily rhythm in newborn foals

et al. 2008

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“…We have previously shown that the wave forms of the daily rhythms of body temperature, heart rate, and blood pressure of the dog are not affected by the time of feeding [22]. Water was available ad libitum.…”

Section: Methodsmentioning

confidence: 99%

Variability of behavioral chronotypes of 16 mammalian species under controlled conditions

Refinetti

Wassmer

Basu

et al. 2016

Physiology & Behavior

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This is an author-produced, peer-reviewed version of this article. © 2016, Elsevier. Licensed under the Creative Commons AttributionNonCommercial-No Derivatives 4.0 License. Details regarding the use of this work can be found at: http://creativecommons.org/licenses/by-nc-nd/ 4.0/ . The final, definitive version of this document can be found online at Physiology & Behavior, doi: 10.1016/j.physbeh.2016 Publication Information Refinetti, Roberto. (2016) E-mail address: refinetti@circadian.org (R. Refinetti). AbstractHuman chronotypes (differences in preference for early or late rising each day) have been extensively studied in recent years, but no attempt has been made to compare human chronotypes with the chronotypes of other animal species. We evaluated behavioral chronotypes in 16 mammalian species along a body size gradient of five orders of magnitude (from mice to cattle). Individuals of all species were studied under a 12L:12D photoperiod in a thermoneutral environment with food and water available at all times. Rhythms of locomotor activity were analyzed for onset time, acrophase, and robustness. Neither of these rhythmic parameters was significantly related to body size, but onset time and acrophase varied considerably from species to species, thus characterizing diurnal and nocturnal species. Chronotype spreads ranged from less than an hour in sheep to almost 24 hours in cats, thus extending both below and above the human chronotype spread of 6 hours. The variability of chronotype (as quantified by the standard deviation of group means) was much larger between species than within species and also larger between individuals of a species than within individuals on consecutive days. These results help situate the matter of human chronotypes within the broader context of variability in the phase angle of entrainment of circadian rhythms in animals.

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“…recently, the effect of a treadmill exercise program on plasma cortisol hormone level and some physiological and hematological parameters have been evaluated in German shepherd dogs [16,17]. on the other hand, in Beagle dogs, the studies have been limited to evaluation of daily rhythmicity of these parameters [14,18] without considering the response that occurs during exercise. in fact, to the best of our knowledge, there are no available data that originate from standardized studies in Beagles.…”

Section: Introductionmentioning

confidence: 99%

Effect of Moderate Treadmill Exercise on Some Physiological Parameters in Untrained Beagle Dogs

et al. 2012

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Abstract:The aim of the present study was to evaluate the modifications of some physiological parameters during moderate treadmill exercise in seven healthy Beagle dogs. All animals were submitted to treadmill exercise consisting of walking (15 min), trotting (20 min) and walking (10 min). At every step, rectal temperature (RT) was measured, and the mean heart rate (HR) was assessed. Venous blood samples were collected immediately before starting the treadmill exercise session (at rest), after the end of walking (15 min), trotting (20 min) and walking (10 min), and after 30 min of passive recovery. For immediate assessment of lactate and glucose concentration, blood was analyzed with portable blood lactate and blood glucose analyzers, respectively. Blood was also transferred into sterile glass tubes containing K 3 -ethylenediaminetetraacetic acid (K 3 -EDTA) for evaluation of red blood cells (RBC), white blood cells (WBC), platelets (PLT), hemoglobin (Hb), hematocrit (Hct), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC). One-way repeated measures analysis of variance (ANOVA) showed a significant effect of treadmill exercise (P<0.05) on RT, HR, lactate, glucose, RBC and Hct. Considering these significant variations, the knowledge of RT, HR, glucose and lactate concentrations, RBC, and Hct, the most suitable and sensitive indicators of response to treadmill exercise in untrained dogs, is essential in order to evidence the individual levels of exercise tolerance, to investigate exerciserelated problems and to design specific and individual treadmill protocols.

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Daily Rhythms of Blood Pressure, Heart Rate, and Body Temperature in Fed and Fasted Male Dogs

Cited by 37 publications

References 44 publications

Chronobiologic blood pressure assessment: Maturation of the daily rhythm in newborn foals

Chronobiologic blood pressure assessment: Maturation of the daily rhythm in newborn foals

Variability of behavioral chronotypes of 16 mammalian species under controlled conditions

Effect of Moderate Treadmill Exercise on Some Physiological Parameters in Untrained Beagle Dogs

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