Influence of time of day on body temperature, heart rate, arterial pressure, and other biological variables in horses during incremental exercise

Chronobiology International
Giuseppe PiccioneGiovanni Caola

Abstract

We examined the response to exercise of selected physiological variables in horses performing the identical routine for eight days, in the morning (a.m.) or in the afternoon (p.m.). Heart rate (HR), systolic and diastolic blood pressure (BP), and body temperature (BT) were all consistently greater in the p.m. For BP and BT, the absolute increase above the a.m. values was the same at rest and during exercise. For HR, the absolute increase was greater during exercise, but the percent increase was the same as during rest. During exercise, blood glucose decreased, while blood lactate and skin temperature increased; these changes were the same during the a.m. and p.m. sessions. We conclude that there is no indication in horses of a difference in the responses of HR, BP, and BT to exercise between the a.m. and p.m. The circadian oscillations, however, alter the absolute values of these variables both at rest and during exercise, raising the possibility that the safety margins against hyperthermia and hypertension may decrease during p.m. exercise.

References

Mar 1, 1992·Physiology & Behavior·R Refinetti, M Menaker
Mar 1, 1991·Journal of Animal Science·W E KrzakL M Lawrence
Dec 1, 1986·International Journal of Sports Medicine·T Reilly, G A Brooks
Dec 1, 1973·Journal of Applied Physiology·E L Fox
Dec 1, 1984·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·V HessemerT Breidenbach
Jan 1, 1982·Comparative Biochemistry and Physiology. A, Comparative Physiology·J H CoetzeeG Mitchell
Dec 1, 1984·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·G FeistkornC Jessen
Jun 1, 1983·British Journal of Sports Medicine·C Baxter, T Reilly
Jan 1, 1993·European Journal of Applied Physiology and Occupational Physiology·M S HickeyJ J Widrick
Jan 1, 1995·European Journal of Applied Physiology and Occupational Physiology·M SagivJ Rudoy
May 27, 2003·American Heart Journal·Yi-Fang Guo, Phyllis K Stein
May 25, 1960·Acta Physiologica Scandinavica·R W BLOUNT, B H LEVEDAHL
Jul 1, 1962·Journal of Applied Physiology·C G WILLIAMSJ S WARD
Oct 22, 2003·European Journal of Applied Physiology·Jacopo P Mortola
Apr 28, 2004·Respiratory Physiology & Neurobiology·Giuseppe PiccioneJacopo P Mortola
Aug 31, 2004·Chronobiology International·Giuseppe PiccioneGiovanni Caola
Oct 9, 2004·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Jacopo P Mortola, Clement Lanthier
May 4, 2005·Chronobiology International·B DrustT Reilly
Jun 7, 2005·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Giuseppe PiccioneJacopo P Mortola
Jun 22, 2005·Journal of Sports Sciences·Greg AtkinsonJames Waterhouse
Nov 18, 2005·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·G PiccioneR Refinetti
Jan 20, 2006·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·R Refinetti
Jul 4, 2006·Respiratory Physiology & Neurobiology·Jacopo P Mortola
Nov 11, 2006·Journal of Applied Physiology·Christopher E KlineShawn D Youngstedt
Dec 14, 2006·European Journal of Applied Physiology·Greg AtkinsonJim Waterhouse
Apr 6, 2007·The Veterinary Journal·Giuseppe PiccioneElisabetta Giudice
Apr 25, 2007·Chronobiology International·Hugues Dardente, Nicolas Cermakian
Jul 7, 2007·Chronobiology International·Jeanick BrisswalterGuy Falgairette
Aug 19, 2007·Chronobiology International·Nizar SouissiDamien Davenne
Nov 14, 2008·Chronobiology International·Helen JonesGreg Atkinson
Nov 14, 2008·Chronobiology International·Francesco PortaluppiMichael H Smolensky
Nov 14, 2008·Chronobiology International·Nizar SouissiDamien Davenne

❮ Previous
Next ❯

Citations

Aug 10, 2011·Journal of Animal Physiology and Animal Nutrition·G PiccioneF Fazio
Jul 26, 2011·The Veterinary Journal·Deborah Penteado Martins DiasJosé Corrêa de Lacerda Neto
Jul 16, 2019·NPJ Digital Medicine·Robert AvramJeffrey Olgin

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.