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Changes in selected biochemical constituents of blood collected from horses participating in a 50-mile endurance ride.
Am J Vet Res. 1982 Dec; 43(12):2239-43.AJ

Abstract

The effects of strenuous exercise on serum electrolytes, blood metabolites, and serum enzymes were studied in a group of 13 horses participating in a 50-mile endurance ride. Blood samples were collected before, during, and at the end of the ride, as well as 1 hour and 16 hours after the completion of the ride. There were significant changes in these values when preride values were compared with those of samples taken at different sample-collection periods. Significant (P less than 0.001) decreases were observed in serum concentrations of chloride, potassium, and calcium. A significant increase in the serum concentration of phosphorous also was observed. The mean concentrations of chloride and calcium remained significantly reduced in the 16-hour postride sample. A small, but significant (P less than 0.05), increase in sodium and decrease in glucose concentrations were observed at the midride sample. Although midride samples did not reflect a significant change in blood pyruvate concentration, a significant (P less than 0.05) increase was observed at the end of the ride. Changes in the hematocrit and the total protein concentration were statistically significant at levels of P less than 0.001 and P less than 0.01, respectively. The horses showed highly significant increases in concentrations of free fatty acids, serum enzymes (P less than 0.001), and lactate (P less than 0.005) during the ride. The elevated values of creatine kinase and lactic dehydrogenase decreased, while the aspartate aminotransferase values remained increased long after completion of the ride. The lactate and free fatty acids, which rose significantly during the ride, decreased to approximately preride values by 16 hours after the ride was completed. We conclude that the changes in serum electrolytes, enzymes, and blood metabolites reflect the sweating, muscle damage, and increased dependency on anaerobic glycolysis and lipid mobilization that these horses experienced during the competitive endurance ride.

Authors

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Pub Type(s)

Journal Article

Language

eng

PubMed ID

7165172

Citation

Deldar, A, et al. "Changes in Selected Biochemical Constituents of Blood Collected From Horses Participating in a 50-mile Endurance Ride." American Journal of Veterinary Research, vol. 43, no. 12, 1982, pp. 2239-43.
Deldar A, Fregin FG, Bloom JC, et al. Changes in selected biochemical constituents of blood collected from horses participating in a 50-mile endurance ride. Am J Vet Res. 1982;43(12):2239-43.
Deldar, A., Fregin, F. G., Bloom, J. C., & Davanipour, Z. (1982). Changes in selected biochemical constituents of blood collected from horses participating in a 50-mile endurance ride. American Journal of Veterinary Research, 43(12), 2239-43.
Deldar A, et al. Changes in Selected Biochemical Constituents of Blood Collected From Horses Participating in a 50-mile Endurance Ride. Am J Vet Res. 1982;43(12):2239-43. PubMed PMID: 7165172.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Changes in selected biochemical constituents of blood collected from horses participating in a 50-mile endurance ride. AU - Deldar,A, AU - Fregin,F G, AU - Bloom,J C, AU - Davanipour,Z, PY - 1982/12/1/pubmed PY - 1982/12/1/medline PY - 1982/12/1/entrez SP - 2239 EP - 43 JF - American journal of veterinary research JO - Am J Vet Res VL - 43 IS - 12 N2 - The effects of strenuous exercise on serum electrolytes, blood metabolites, and serum enzymes were studied in a group of 13 horses participating in a 50-mile endurance ride. Blood samples were collected before, during, and at the end of the ride, as well as 1 hour and 16 hours after the completion of the ride. There were significant changes in these values when preride values were compared with those of samples taken at different sample-collection periods. Significant (P less than 0.001) decreases were observed in serum concentrations of chloride, potassium, and calcium. A significant increase in the serum concentration of phosphorous also was observed. The mean concentrations of chloride and calcium remained significantly reduced in the 16-hour postride sample. A small, but significant (P less than 0.05), increase in sodium and decrease in glucose concentrations were observed at the midride sample. Although midride samples did not reflect a significant change in blood pyruvate concentration, a significant (P less than 0.05) increase was observed at the end of the ride. Changes in the hematocrit and the total protein concentration were statistically significant at levels of P less than 0.001 and P less than 0.01, respectively. The horses showed highly significant increases in concentrations of free fatty acids, serum enzymes (P less than 0.001), and lactate (P less than 0.005) during the ride. The elevated values of creatine kinase and lactic dehydrogenase decreased, while the aspartate aminotransferase values remained increased long after completion of the ride. The lactate and free fatty acids, which rose significantly during the ride, decreased to approximately preride values by 16 hours after the ride was completed. We conclude that the changes in serum electrolytes, enzymes, and blood metabolites reflect the sweating, muscle damage, and increased dependency on anaerobic glycolysis and lipid mobilization that these horses experienced during the competitive endurance ride. SN - 0002-9645 UR - https://www.unboundmedicine.com/medline/citation/7165172/Changes_in_selected_biochemical_constituents_of_blood_collected_from_horses_participating_in_a_50_mile_endurance_ride_ DB - PRIME DP - Unbound Medicine ER -