The Effect of Physical Training on Peripheral Blood Mononuclear Cell Ex Vivo Proliferation, Differentiation, Activity, and Reactive Oxygen Species Production in Racehorses.
Abstract: Physical activity has an influence on a variety of processes in an athlete's organism including the immune system. Unfortunately, there is a lack of studies regarding racehorse immune cells, especially when the horse model is compared to human exercise physiology. The aim of the study was to determine changes in immune cell proliferation, lymphocyte populations, and monocyte functionality in trained and untrained racehorses after exercise. In this study, field data were collected. The cells from 28 racehorses (14 untrained and 14 well-trained) were collected before and after exercise (800 m at a speed of about 800 m/min) and cultured for 4 days. The expression of CD4, CD8, FoxP, CD14, MHCII, and CD5 in PBMC, and reactive oxygen species (ROS) production, as well as cell proliferation, were evaluated by flow cytometry. In addition, IL-1β, IL-4, IL-6, IL-10, IL-17, INF-γ, and TNF-α concentrations were evaluated by ELISA. The creation of an anti-inflammatory environment in well-trained horses was confirmed. In contrast, a pro-inflammatory reaction occurred in untrained horses after training. In conclusion, an anti-inflammatory state occurs in well-trained racehorses, which is an adaptational reaction to an increased workload during training.
Publication Date: 2020-11-20 PubMed ID: 33233549PubMed Central: PMC7699811DOI: 10.3390/antiox9111155Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
- Journal Article
Summary
This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.
This research paper studies how physical training impacts the immune cells and physiological responses of racehorses. The study found that well-trained horses experience an anti-inflammatory reaction with increased workload during training while untrained horses exhibit a pro-inflammatory response post-training.
Methodology
- The researchers conducted this study with 28 racehorses: 14 of them were well-trained while the other 14 were untrained.
- These horses performed exercises by running 800 meters at a speed of approximately 800 meters/minute.
- The researchers then collected the horses’ peripheral blood mononuclear cells (PBMC) before and after the exercise. These cells were cultured for 4 days.
Cytometry and ELISA Analysis
- The researchers used flow cytometry to evaluate the cell proliferation and the expression of CD4, CD8, FoxP, CD14, MHCII, and CD5 in the PBMC. They also assessed the production of reactive oxygen species (ROS).
- Enzyme-linked immunoassay (ELISA) was used to assess the concentrations of interleukin (IL)-1β, IL-4, IL-6, IL-10, IL-17, interferon (INF)- γ, and tumor necrosis factor (TNF)-α.
Findings
- Well-trained racehorses displayed an anti-inflammatory environment, whereas untrained horses showed a pro-inflammatory reaction after training.
- This study suggests that an increased workload during training triggers an adaptive anti-inflammatory response in physically trained racehorses.
Conclusion
- The findings suggest a clear connection between the training level of the racehorses and their immune and physiological responses to exercise. More specifically, regularly trained racehorses exhibit beneficial, anti-inflammatory reactions to increased physical exertion, whereas untrained horses conversely show pro-inflammatory responses.
- This indicates that physical training can modulate immune responses and can potentially improve the performance and health of racehorses.
Cite This Article
APA
Witkowska-Piłaszewicz O, Pingwara R, Winnicka A.
(2020).
The Effect of Physical Training on Peripheral Blood Mononuclear Cell Ex Vivo Proliferation, Differentiation, Activity, and Reactive Oxygen Species Production in Racehorses.
Antioxidants (Basel), 9(11), 1155.
https://doi.org/10.3390/antiox9111155 Publication
Researcher Affiliations
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland.
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland.
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland.
Grant Funding
- 2017/25/N/NZ6/02750 / Narodowym Centrum Nauki
Conflict of Interest Statement
The authors declare no conflict of interest.
References
This article includes 72 references
- Campbell JP, Riddell NE, Burns VE, Turner M, van Zanten JJ, Drayson MT, Bosch JA. Acute exercise mobilises CD8+ T lymphocytes exhibiting an effector-memory phenotype.. Brain Behav Immun 2009 Aug;23(6):767-75.
- Gleeson M, Bishop NC, Stensel DJ, Lindley MR, Mastana SS, Nimmo MA. The anti-inflammatory effects of exercise: mechanisms and implications for the prevention and treatment of disease.. Nat Rev Immunol 2011 Aug 5;11(9):607-15.
- Nieman DC, Wentz LM. The compelling link between physical activity and the body's defense system.. J Sport Health Sci 2019 May;8(3):201-217.
- Kakanis M, Peake J, Hooper S, Gray B, Marshall-Gradisnik S. The open window of susceptibility to infection after acute exercise in healthy young male elite athletes.. J. Sci. Med. Sport 2010;13:e85–e86.
- MacKinnon LT. Special feature for the Olympics: effects of exercise on the immune system: overtraining effects on immunity and performance in athletes.. Immunol Cell Biol 2000 Oct;78(5):502-9.
- Wood JL, Newton JR, Chanter N, Mumford JA. Association between respiratory disease and bacterial and viral infections in British racehorses.. J Clin Microbiol 2005 Jan;43(1):120-6.
- Robson PJ, Alston TD, Myburgh KH. Prolonged suppression of the innate immune system in the horse following an 80 km endurance race.. Equine Vet J 2003 Mar;35(2):133-7.
- Warburton DER, Bredin SSD. Health benefits of physical activity: a systematic review of current systematic reviews.. Curr Opin Cardiol 2017 Sep;32(5):541-556.
- Pape K, Ryttergaard L, Rotevatn TA, Nielsen BJ, Torp-Pedersen C, Overgaard C, Bøggild H. Leisure-Time Physical Activity and the Risk of Suspected Bacterial Infections.. Med Sci Sports Exerc 2016 Sep;48(9):1737-44.
- Campbell JP, Turner JE. Debunking the Myth of Exercise-Induced Immune Suppression: Redefining the Impact of Exercise on Immunological Health Across the Lifespan.. Front Immunol 2018;9:648.
- Dhabhar FS. Effects of stress on immune function: the good, the bad, and the beautiful.. Immunol Res 2014 May;58(2-3):193-210.
- Jensen-Waern M, Lindberg A, Johannisson A, Gröndahl G, Lindgren JA, Essén-Gustavsson B. The effects of an endurance ride on metabolism and neutrophil function.. Equine Vet J Suppl 1999 Jul;(30):605-9.
- Hinchcliff K.W., Kaneps A.J., Geor R.J.. Immunological Responses to Exercise and Training. In: Horohov D.W., editor. Equine Sports Medicine and Surgery. 1st ed. Elsevier Health Sciences; New York, NY, USA: 2004. p. 410.
- Geor R.J., Hinchcliff K.W., Kaneps A.J.. Equine Exercise Physiology. 1st ed. Elsevier Health Sciences; New York, NY, USA: 2008.
- Hines M.T., Leroux A.J., Schott H.C.. Changes in Lymphocyte Subpopulations Following Prolonged Exercise in Horses. Proceedings of the 12th Annual Veterinary Medical Forum San Francisco, CA, USA. 2–5 June 1994; p. 1016.
- Horohov D.W., Sinatra S.T., Chopra R.K., Jankowitz S., Betancourt A., Bloomer R.J.. The Effect of Exercise and Nutritional Supplementation on Proinflammatory Cytokine Expression in Young Racehorses During Training. J. Equine Vet. Sci. 2012;32:805–815.
- Lu L, Barbi J, Pan F. The regulation of immune tolerance by FOXP3.. Nat Rev Immunol 2017 Nov;17(11):703-717.
- . Resolution on the Animals Protection Used for Scientific and Educational Purposes and the European Directive EU/2010/63-art 1.2 (5) Ust. z dnia 15 Stycznia 2015 r. o Ochronie Zwierząt Wykorzystywanych do celów Naukowych lub Edukacyjnych, Dz.U.2018.0.1207. [(accessed on 18 November 2020)]; Available online: https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:276:0033:0079:en:PDF.
- Nielsen HB, Pedersen BK. Lymphocyte proliferation in response to exercise.. Eur J Appl Physiol Occup Physiol 1997;75(5):375-9.
- Nieman DC, Miller AR, Henson DA, Warren BJ, Gusewitch G, Johnson RL, Davis JM, Butterworth DE, Herring JL, Nehlsen-Cannarella SL. Effect of high- versus moderate-intensity exercise on lymphocyte subpopulations and proliferative response.. Int J Sports Med 1994 May;15(4):199-206.
- Diment BC, Fortes MB, Edwards JP, Hanstock HG, Ward MD, Dunstall HM, Friedmann PS, Walsh NP. Exercise Intensity and Duration Effects on In Vivo Immunity.. Med Sci Sports Exerc 2015 Jul;47(7):1390-8.
- Siedlik JA, Benedict SH, Landes EJ, Weir JP, Vardiman JP, Gallagher PM. Acute bouts of exercise induce a suppressive effect on lymphocyte proliferation in human subjects: A meta-analysis.. Brain Behav Immun 2016 Aug;56:343-51.
- Nesse LL, Johansen GI, Blom AK. Effects of racing on lymphocyte proliferation in horses.. Am J Vet Res 2002 Apr;63(4):528-30.
- Kurcz E., Lawrence L., Kelley K.W., Miller P.. The effect of intense exercise on the cell-mediated immune response of horses. J. Equine Vet. Sci. 1988;8:237–239.
- Crevel R.. Lymphocyte Proliferation. Encyclopedic Reference of Immunotoxicology. Springer; Berlin/Heidelberg, Germany: 2005.
- Raidal SL, Love DN, Bailey GD, Rose RJ. Effect of single bouts of moderate and high intensity exercise and training on equine peripheral blood neutrophil function.. Res Vet Sci 2000 Apr;68(2):141-6.
- Folsom RW, Littlefield-Chabaud MA, French DD, Pourciau SS, Mistric L, Horohov DW. Exercise alters the immune response to equine influenza virus and increases susceptibility to infection.. Equine Vet J 2001 Nov;33(7):664-9.
- Shinkai S, Kohno H, Kimura K, Komura T, Asai H, Inai R, Oka K, Kurokawa Y, Shephard R. Physical activity and immune senescence in men.. Med Sci Sports Exerc 1995 Nov;27(11):1516-26.
- Simpson R., Spielmann G., Hanley P., Bollard C.. 177. A single bout of exercise augments the expansion of multi-virus specific T-cells in healthy humans. Brain Behav. Immun. 2014;40:e51.
- Robbin MG, Wagner B, Noronha LE, Antczak DF, de Mestre AM. Subpopulations of equine blood lymphocytes expressing regulatory T cell markers.. Vet Immunol Immunopathol 2011 Mar 15;140(1-2):90-101.
- Hamza E, Gerber V, Steinbach F, Marti E. Equine CD4(+) CD25(high) T cells exhibit regulatory activity by close contact and cytokine-dependent mechanisms in vitro.. Immunology 2011 Nov;134(3):292-304.
- Rehm K, Sunesara I, Marshall GD. Increased Circulating Anti-inflammatory Cells in Marathon-trained Runners.. Int J Sports Med 2015 Oct;36(10):832-6.
- Handzlik MK, Shaw AJ, Dungey M, Bishop NC, Gleeson M. The influence of exercise training status on antigen-stimulated IL-10 production in whole blood culture and numbers of circulating regulatory T cells.. Eur J Appl Physiol 2013 Jul;113(7):1839-48.
- Wilson LD, Zaldivar FP, Schwindt CD, Wang-Rodriguez J, Cooper DM. Circulating T-regulatory cells, exercise and the elite adolescent swimmer.. Pediatr Exerc Sci 2009 Aug;21(3):305-17.
- Hines MT, Schott HC 2nd, Bayly WM, Leroux AJ. Exercise and immunity: a review with emphasis on the horse.. J Vet Intern Med 1996 Sep-Oct;10(5):280-9.
- Kajiura JS, MacDougall JD, Ernst PB, Younglai EV. Immune response to changes in training intensity and volume in runners.. Med Sci Sports Exerc 1995 Aug;27(8):1111-7.
- Malinowski K, Kearns CF, Guirnalda PD, Roegner V, McKeever KH. Effect of chronic clenbuterol administration and exercise training on immune function in horses.. J Anim Sci 2004 Dec;82(12):3500-7.
- Witkowska-Piłaszewicz O, Bąska P, Czopowicz M, Żmigrodzka M, Szarska E, Szczepaniak J, Nowak Z, Winnicka A, Cywińska A. Anti-Inflammatory State in Arabian Horses Introduced to the Endurance Training.. Animals (Basel) 2019 Aug 27;9(9).
- Corthay A. How do regulatory T cells work?. Scand J Immunol 2009 Oct;70(4):326-36.
- Cywinska A., Turło A., Witkowski L., Szarska E., Winnicka A.. Changes in blood cytokine concentrations in horses after long-distance endurance rides. Med. Wet. 2014;70:568–571.
- Clifford T, Wood MJ, Stocks P, Howatson G, Stevenson EJ, Hilkens CMU. T-regulatory cells exhibit a biphasic response to prolonged endurance exercise in humans.. Eur J Appl Physiol 2017 Aug;117(8):1727-1737.
- Hamza E, Mirkovitch J, Steinbach F, Marti E. Regulatory T cells in early life: comparative study of CD4+CD25high T cells from foals and adult horses.. PLoS One 2015;10(3):e0120661.
- Merah-Mourah F, Cohen SO, Charron D, Mooney N, Haziot A. Identification of Novel Human Monocyte Subsets and Evidence for Phenotypic Groups Defined by Interindividual Variations of Expression of Adhesion Molecules.. Sci Rep 2020 Mar 10;10(1):4397.
- Ziegler-Heitbrock L, Ancuta P, Crowe S, Dalod M, Grau V, Hart DN, Leenen PJ, Liu YJ, MacPherson G, Randolph GJ, Scherberich J, Schmitz J, Shortman K, Sozzani S, Strobl H, Zembala M, Austyn JM, Lutz MB. Nomenclature of monocytes and dendritic cells in blood.. Blood 2010 Oct 21;116(16):e74-80.
- Narasimhan PB, Marcovecchio P, Hamers AAJ, Hedrick CC. Nonclassical Monocytes in Health and Disease.. Annu Rev Immunol 2019 Apr 26;37:439-456.
- Simpson RJ, McFarlin BK, McSporran C, Spielmann G, ó Hartaigh B, Guy K. Toll-like receptor expression on classic and pro-inflammatory blood monocytes after acute exercise in humans.. Brain Behav Immun 2009 Feb;23(2):232-9.
- Frellstedt L, Waldschmidt I, Gosset P, Desmet C, Pirottin D, Bureau F, Farnir F, Franck T, Dupuis-Tricaud MC, Lekeux P, Art T. Training modifies innate immune responses in blood monocytes and in pulmonary alveolar macrophages.. Am J Respir Cell Mol Biol 2014 Jul;51(1):135-42.
- McFarlin BK, Flynn MG, Campbell WW, Craig BA, Robinson JP, Stewart LK, Timmerman KL, Coen PM. Physical activity status, but not age, influences inflammatory biomarkers and toll-like receptor 4.. J Gerontol A Biol Sci Med Sci 2006 Apr;61(4):388-93.
- Sarkar S, Chelvarajan L, Go YY, Cook F, Artiushin S, Mondal S, Anderson K, Eberth J, Timoney PJ, Kalbfleisch TS, Bailey E, Balasuriya UB. Equine Arteritis Virus Uses Equine CXCL16 as an Entry Receptor.. J Virol 2016 Jan 13;90(7):3366-84.
- Larson EM, Babasyan S, Wagner B. Phenotype and function of IgE-binding monocytes in equine Culicoides hypersensitivity.. PLoS One 2020;15(5):e0233537.
- Kiku Y, Kusano K, Miyake H, Fukuda S, Takahashi J, Inotsume M, Hirano S, Yoshihara T, Toribio RE, Okada H, Yoshino TO. Flow cytometric analysis of peripheral blood mononuclear cells induced by experimental endotoxemia in horse.. J Vet Med Sci 2003 Aug;65(8):857-63.
- Gibbons N, Goulart MR, Chang YM, Efstathiou K, Purcell R, Wu Y, Peters LM, Turmaine M, Szladovits B, Garden OA. Phenotypic heterogeneity of peripheral monocytes in healthy dogs.. Vet Immunol Immunopathol 2017 Aug;190:26-30.
- Rzepecka A, Żmigrodzka M, Witkowska-Piłaszewicz O, Cywińska A, Winnicka A. CD4 and MHCII phenotypic variability of peripheral blood monocytes in dogs.. PLoS One 2019;14(7):e0219214.
- Beiter T, Hoene M, Prenzler F, Mooren FC, Steinacker JM, Weigert C, Nieß AM, Munz B. Exercise, skeletal muscle and inflammation: ARE-binding proteins as key regulators in inflammatory and adaptive networks.. Exerc Immunol Rev 2015;21:42-57.
- Yang W, Hu P. Skeletal muscle regeneration is modulated by inflammation.. J Orthop Translat 2018 Apr;13:25-32.
- Sponseller BA, de Macedo MM, Clark SK, Gallup JM, Jones DE. Activation of peripheral blood monocytes results in more robust production of IL-10 in neonatal foals compared to adult horses.. Vet Immunol Immunopathol 2009 Jan 15;127(1-2):167-73.
- Suzuki K.. Cytokine Response to Exercise and Its Modulation. Antioxidants 2018;7:17.
- Tsuzuki T, Tsukioka K, Naito H. Changes in the blood redox balance during a simulated duathlon race and its relationship with athletic performance.. Physiol Rep 2019 Nov;7(21):e14277.
- He F, Li J, Liu Z, Chuang CC, Yang W, Zuo L. Redox Mechanism of Reactive Oxygen Species in Exercise.. Front Physiol 2016;7:486.
- Shono S, Gin A, Minowa F, Okubo K, Mochizuki M. The Oxidative Stress Markers of Horses-the Comparison with Other Animals and the Influence of Exercise and Disease.. Animals (Basel) 2020 Apr 3;10(4).
- Powers SK, Deminice R, Ozdemir M, Yoshihara T, Bomkamp MP, Hyatt H. Exercise-induced oxidative stress: Friend or foe?. J Sport Health Sci 2020 Sep;9(5):415-425.
- Matés JM, Segura JA, Alonso FJ, Márquez J. Intracellular redox status and oxidative stress: implications for cell proliferation, apoptosis, and carcinogenesis.. Arch Toxicol 2008 May;82(5):273-99.
- Webb R, Hughes MG, Thomas AW, Morris K. The Ability of Exercise-Associated Oxidative Stress to Trigger Redox-Sensitive Signalling Responses.. Antioxidants (Basel) 2017 Aug 10;6(3).
- Roux C, Jafari SM, Shinde R, Duncan G, Cescon DW, Silvester J, Chu MF, Hodgson K, Berger T, Wakeham A, Palomero L, Garcia-Valero M, Pujana MA, Mak TW, McGaha TL, Cappello P, Gorrini C. Reactive oxygen species modulate macrophage immunosuppressive phenotype through the up-regulation of PD-L1.. Proc Natl Acad Sci U S A 2019 Mar 5;116(10):4326-4335.
- Liburt NR, Adams AA, Betancourt A, Horohov DW, McKeever KH. Exercise-induced increases in inflammatory cytokines in muscle and blood of horses.. Equine Vet J Suppl 2010 Nov;(38):280-8.
- Reihmane D, Dela F. Interleukin-6: possible biological roles during exercise.. Eur J Sport Sci 2014;14(3):242-50.
- Peake JM, Della Gatta P, Suzuki K, Nieman DC. Cytokine expression and secretion by skeletal muscle cells: regulatory mechanisms and exercise effects.. Exerc Immunol Rev 2015;21:8-25.
- Pedersen BK, Hoffman-Goetz L. Exercise and the immune system: regulation, integration, and adaptation.. Physiol Rev 2000 Jul;80(3):1055-81.
- Hart PH, Vitti GF, Burgess DR, Whitty GA, Piccoli DS, Hamilton JA. Potential antiinflammatory effects of interleukin 4: suppression of human monocyte tumor necrosis factor alpha, interleukin 1, and prostaglandin E2.. Proc Natl Acad Sci U S A 1989 May;86(10):3803-7.
- Golzari Z, Shabkhiz F, Soudi S, Kordi MR, Hashemi SM. Combined exercise training reduces IFN-γ and IL-17 levels in the plasma and the supernatant of peripheral blood mononuclear cells in women with multiple sclerosis.. Int Immunopharmacol 2010 Nov;10(11):1415-9.
- Millar NL, Akbar M, Campbell AL, Reilly JH, Kerr SC, McLean M, Frleta-Gilchrist M, Fazzi UG, Leach WJ, Rooney BP, Crowe LA, Murrell GA, McInnes IB. IL-17A mediates inflammatory and tissue remodelling events in early human tendinopathy.. Sci Rep 2016 Jun 6;6:27149.
- Ackermann PW, Domeij-Arverud E, Leclerc P, Amoudrouz P, Nader GA. Anti-inflammatory cytokine profile in early human tendon repair.. Knee Surg Sports Traumatol Arthrosc 2013 Aug;21(8):1801-6.
Citations
This article has been cited 15 times.- Bollinger L, Bartel A, Weber C, Gehlen H. Pre-Ride Biomarkers and Endurance Horse Welfare: Analyzing the Impact of the Elimination of Superoxide Dismutase, δ-Aminolevulinic-Dehydratase, Thiobarbituric Acid Reactive Substances, Iron, and Serum Amyloid A Levels in Elite 160 km Endurance Rides.. Animals (Basel) 2023 May 17;13(10).
- Kotlarczyk AM, Kaczmarczyk J, Witkowska-Piłaszewicz O, Kotula-Balak M, Korzekwa AJ. How Is Arachidonic Acid Metabolism in the Uterus Connected with the Immune Status of Red Deer Females (Cervus elaphus L.) in Different Reproductive Stages?. Int J Mol Sci 2023 Mar 1;24(5).
- Plisak U, Szczepaniak J, Żmigrodzka M, Giercuszkiewicz-Hecold B, Witkowska-Piłaszewicz O. Changes in novel anti-infalmmatory cytokine concetration in the bood of endurance and race horses at different levels of training.. Comput Struct Biotechnol J 2023;21:418-424.
- Mowry KC, Thomson-Parker TL, Morales C, Fikes KK, Stutts KJ, Leatherwood JL, Anderson MJ, Smith RX, Suagee-Bedore JK. Effects of Crude Rice Bran Oil and a Flaxseed Oil Blend in Young Horses Engaged in a Training Program.. Animals (Basel) 2022 Nov 2;12(21).
- Bartolomé E, Perdomo-González DI, Ripollés-Lobo M, Valera M. Basal Reactivity Evaluated by Infrared Thermography in the "Caballo de Deporte Español" Horse Breed According to Its Coat Color.. Animals (Basel) 2022 Sep 21;12(19).
- Zandoná Meleiro MC, de Carvalho HJC, Ribeiro RR, da Silva MD, Salles Gomes CM, Miglino MA, de Santis Prada IL. Immune Functions Alterations Due to Racing Stress in Thoroughbred Horses.. Animals (Basel) 2022 May 7;12(9).
- Araneda OF. Horse Racing as a Model to Study the Relationship between Air Pollutants and Physical Performance.. Animals (Basel) 2022 Apr 28;12(9).
- Domino M, Borowska M, Kozłowska N, Trojakowska A, Zdrojkowski Ł, Jasiński T, Smyth G, Maśko M. Selection of Image Texture Analysis and Color Model in the Advanced Image Processing of Thermal Images of Horses following Exercise.. Animals (Basel) 2022 Feb 12;12(4).
- Witkowska-Piłaszewicz O, Pingwara R, Szczepaniak J, Winnicka A. The Effect of the Clenbuterol-β2-Adrenergic Receptor Agonist on the Peripheral Blood Mononuclear Cells Proliferation, Phenotype, Functions, and Reactive Oxygen Species Production in Race Horses In Vitro.. Cells 2021 Apr 17;10(4).
- Maśko M, Domino M, Jasiński T, Witkowska-Piłaszewicz O. The Physical Activity-Dependent Hematological and Biochemical Changes in School Horses in Comparison to Blood Profiles in Endurance and Race Horses.. Animals (Basel) 2021 Apr 14;11(4).
- Bartolomé E, Perdomo-González DI, Sánchez-Guerrero MJ, Valera M. Genetic Parameters of Effort and Recovery in Sport Horses Assessed with Infrared Thermography.. Animals (Basel) 2021 Mar 16;11(3).
- Szabó C, Vizesi Z, Vincze A. Heart Rate and Heart Rate Variability of Amateur Show Jumping Horses Competing on Different Levels.. Animals (Basel) 2021 Mar 4;11(3).
- Crawford KL, Finnane A, Greer RM, Phillips CJC, Bishop EL, Woldeyohannes SM, Perkins NR, Ahern BJ. A Prospective Study of Training Methods for Two-Year-Old Thoroughbred Racehorses in Queensland, Australia, and Analysis of the Differences in Training Methods between Trainers of Varying Stable Sizes.. Animals (Basel) 2021 Mar 25;11(4).
- Arfuso F, Giannetto C, Giudice E, Fazio F, Panzera M, Piccione G. Peripheral Modulators of the Central Fatigue Development and Their Relationship with Athletic Performance in Jumper Horses.. Animals (Basel) 2021 Mar 8;11(3).
- Miglio A, Falcinelli E, Mezzasoma AM, Cappelli K, Mecocci S, Gresele P, Antognoni MT. Effect of First Long-Term Training on Whole Blood Count and Blood Clotting Parameters in Thoroughbreds.. Animals (Basel) 2021 Feb 9;11(2).
Use Nutrition Calculator
Check if your horse's diet meets their nutrition requirements with our easy-to-use tool Check your horse's diet with our easy-to-use tool
Talk to a Nutritionist
Discuss your horse's feeding plan with our experts over a free phone consultation Discuss your horse's diet over a phone consultation
Submit Diet Evaluation
Get a customized feeding plan for your horse formulated by our equine nutritionists Get a custom feeding plan formulated by our nutritionists