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Related Experiment Videos

Haematological changes associated with endurance exercise

R J Rose

    The Veterinary Record
    |February 20, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Faster horses in endurance rides showed higher blood counts and noradrenaline post-race. These physiological markers indicate stress responses in equine athletes during strenuous competition.

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    Area of Science:

    • Equine Sports Medicine
    • Veterinary Physiology
    • Animal Exercise Science

    Background:

    • Endurance riding is a demanding equestrian sport.
    • Physiological responses in horses during endurance events are critical to understand.
    • Hematological and biochemical markers can indicate stress and performance.

    Purpose of the Study:

    • To investigate the hematological and noradrenaline responses of horses during a 160 km endurance ride.
    • To compare these responses between horses completing the ride at different speeds.
    • To identify correlations between physiological parameters and performance metrics.

    Main Methods:

    • Blood samples were collected from 14 horses before, immediately after, 30 minutes after, and the day after a 160 km endurance ride.

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  • Packed cell volume, hemoglobin, red cell count, neutrophil, and lymphocyte counts were analyzed.
  • Noradrenaline concentrations were measured.
  • Horses were divided into 'fast' (234 m/min) and 'slow' (144 m/min) groups based on completion speed.

    • Main Results:

    • Immediately post-ride, the fast group exhibited higher packed cell volume, hemoglobin, and neutrophil counts, with lower lymphocyte counts compared to the slow group.
    • Thirty minutes post-ride, the fast group maintained higher neutrophil and lower lymphocyte counts.
    • The fast group showed significant increases in packed cell volume, hemoglobin, and red cell count immediately after the ride, unlike the slow group.

    Conclusions:

    • Horse speed during endurance rides significantly impacts hematological parameters.
    • Elevated packed cell volume, hemoglobin, and neutrophil counts post-ride are associated with faster completion speeds.
    • Noradrenaline concentrations correlate with speed, heart rate, and hematological changes, suggesting a role in the stress response during intense equine exercise.