Effect of First Long-Term Training on Whole Blood Count and Blood Clotting Parameters in Thoroughbreds.
Abstract: Training has a strong effect on the physiology of hematological parameters and blood coagulation, both in humans and in horses. Several blood changes have been reported after exercise in horses but available data differ. We aimed to investigate modifications in complete blood count and some hemostatic parameters induced by the first training period in young untrained Thoroughbred racehorses to detect a possible labile blood coagulability in racehorses. Twenty-nine untrained 2-year-old Thoroughbreds were followed during their incremental 4-month sprint exercise schedule. Blood collection was performed once a month, five times (T-30, T0, T30, T60 and T90), before and during the training period for measurement of complete blood count (CBC) and blood clotting parameters (prothrombin time-PT, activated partial prothrombin time-APTT, thrombin clotting time-TCT, fibrinogen-Fb, thrombin-antithrombin complex-TAT). Differences among the time points for each parameter were analyzed (ANOVA, Kruskal-Wallis one-way analysis of variance, < 0.05). In Thoroughbreds, the first long-term exercise workout period was found to induce a statistical increase in red blood cell indexes and lymphocytes, eosinophils and platelet counts, as well as a hypercoagulability state evident at 30 days of training, which returned to basal levels after 90 days. Regular physical exercise seems to blunt the negative effects of acute efforts on hematological and clotting parameters, an effect that may be attributed to the training condition.
Publication Date: 2021-02-09 PubMed ID: 33572086PubMed Central: PMC7915801DOI: 10.3390/ani11020447Google Scholar: Lookup
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Summary
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This research investigated the effect of the first long-term exercise regimen on blood count and clotting parameters in young, untrained Thoroughbred racehorses. The study found that the initial exercise period led to a statistical increase in red blood cell indexes, certain white blood cells, and platelet count, indicating a higher blood coagulation state at 30 days into training, which normalized after 90 days.
Objective of the Research
- The primary purpose of this study was to investigate changes in complete blood count (CBC) and some blood clotting parameters triggered by the initial training phase in young, untrained Thoroughbred racehorses. This is because training has a significant impact on blood parameters, affecting both people and horses. Because existing data on this topic is inconsistent, the researchers sought to establish a clearer understanding of the effects of training on these parameters.
Methodology
- 29 untrained 2-year-old Thoroughbreds were incrementally trained over a four-month period.
- Blood samples were collected five times – once a month – before and during the training period to measure CBC and blood clotting parameters. The blood clotting parameters measured included prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin clotting time (TCT), fibrinogen (Fb), and thrombin-antithrombin complex (TAT).
- The researchers used ANOVA and Kruskal-Wallis one-way analysis of variance to analyze differences among the time points for each parameter. A p-value of less than 0.05 was considered statistically significant.
Findings
- The study found that the initial long-term exercise schedule resulted in a statistically significant increase in indexes of red blood cells, lymphocytes, eosinophils, and platelet counts, indicating a hypercoagulability state at 30 days of training.
- However, these increased levels returned to baseline after 90 days of training, suggesting that regular physical exercise mitigates the negative effects of acute exertion on hematological and clotting parameters. This effect is thought to be due to the conditioning derived from training.
Cite This Article
APA
Miglio A, Falcinelli E, Mezzasoma AM, Cappelli K, Mecocci S, Gresele P, Antognoni MT.
(2021).
Effect of First Long-Term Training on Whole Blood Count and Blood Clotting Parameters in Thoroughbreds.
Animals (Basel), 11(2), 447.
https://doi.org/10.3390/ani11020447 Publication
Researcher Affiliations
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
Conflict of Interest Statement
None of the authors have any financial or personal relationships that could inappropriately influence or bias the content of the paper.
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Citations
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