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Heart rate variability in trotters during different training periods
S Kinnunen1, R Laukkanen, J Haldi
1Equine Information Centre, P.O. Box 1627, 70211 Kuopio, Finland.
Equine Veterinary Journal. Supplement
|April 4, 2007
Summary
Heart rate variability (HRV) can indicate training stress in horses. Higher HRV during rest and moderate exercise suggests better recovery, while lower HRV during competition signals increased stress and potential overtraining.
Area of Science:
- Equine sports science
- Animal physiology
- Autonomic nervous system function
Background:
- Endurance training impacts autonomic nervous system function in horses.
- High-intensity training carries a risk of overtraining.
- Heart rate variability (HRV) offers a noninvasive method to assess autonomic regulation.
Purpose of the Study:
- To investigate HRV as an early indicator of poor recovery, overreaching, or overtraining in horses.
- To monitor the autonomic response to training stress over a one-year period.
Main Methods:
- Utilized telemetric technology to measure HRV in horses.
- Collected HRV data across different training phases: basic training, pre-competition, and competition.
- Correlated HRV with previous day's activities (rest, walking, jogging).
Main Results:
- HRV was highest during the pre-competition phase and decreased significantly during the competition phase, indicating higher stress.
- Moderate exercise (walking) resulted in significantly higher HRV compared to rest or jogging.
- Horses exhibited greater relaxation during moderate exercise than during rest or anaerobic exercise.
Conclusions:
- HRV is a valuable tool for monitoring cardiovascular responses to training in horses.
- Confirmatory diagnostic measures may be necessary alongside HRV to rule out other causes of underperformance.
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