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Differences in Stride Characteristics Between Lead and Wheel Horses in Competitive Chuckwagon Racing.

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Association Between Stride Parameters and Racetrack Curvature for Thoroughbred Chuckwagon Horses.

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Racetrack curvature significantly impacts chuckwagon horses' stride. Increased curvature leads to higher speed, stride frequency, and reduced stride length, potentially increasing musculoskeletal injury risk.

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Area of Science:

  • Equine Biomechanics
  • Animal Physiology
  • Sports Science

Background:

  • Musculoskeletal injury risk in racehorses is linked to reduced stride length and speed.
  • Racetrack curvature is known to affect maximal speed in horses.

Purpose of the Study:

  • To investigate the effects of racetrack curvature on stride parameters (stride length and frequency) in Thoroughbred Chuckwagon horses.
  • To determine if curvature influences stride parameters associated with injury risk.

Main Methods:

  • Twenty-eight horses utilized Global Navigation Satellite System (GNSS) loggers during training.
  • Speed, stride length (SL), and stride frequency (SF) were analyzed across 100 m sections.
  • Linear mixed models assessed the effects of curvature and speed on stride parameters.

Main Results:

  • Racetrack curvature significantly increased speed (p=0.004), decreased SL (p<0.001), and increased SF (p<0.001).
  • The effects of curvature on SL and SF were dependent on speed (p<0.001).
  • At 60°/100m curvature and median speed (14.5 m/s), SL reduced by 2.1% and SF increased by 2.4% compared to straight sections.

Conclusions:

  • Interactions between speed and racetrack curvature affect chuckwagon horses' stride parameters.
  • These stride parameter changes are comparable to those linked to increased musculoskeletal injury risk in racehorses.
  • Findings highlight the biomechanical impact of track design on equine athletic performance and injury potential.