Heart rate variability in trotters during different training periods.

The research studied the changes in Heart Rate Variability (HRV) in racing horses under different training periods, suggesting it as a potential method of detecting overtraining or poor recovery. It found that, HRV increases when the horses are moderately exercised and decreases when these animals are either at rest or undergoing intense training, implying that horses may be more relaxed while indulging in moderate-pace exercise, compared to while standing still or vigorous exercise.

Objective of the Research

• The primary goal of the study was to explore the potential of HRV as an early indicator of inadequate recovery from an earlier bout of exercise or overreaching/overtraining in horses. This was done by observing variations in HRV across different training periods and relating these changes to signs of stress or relaxation.

Methods Used in the Research

• The study monitored HRV in trotter horses across different stages of a one-year training program, including basic training, pre-competition, and competition periods.
• The HRV measurements were used to assess the responses of the horses to the activities of the previous day.

Key Findings

• The findings suggest that HRV was highest during the pre-competition training period, indicating a lower level of stress or strain.
• There was a significant drop in HRV during the competition period, suggesting an elevated stress load on the horses at this time.
• Walking or moderate exercise significantly increased HRV compared to complete rest or jogging as previous day activities during basic training and pre-competition periods. This indicates horses are possibly more relaxed during moderate exercise than while stationary or during anaerobic activity.

Conclusion of the Study

• The research concluded that HRV could serve as a tool to monitor the cardiovascular responses of horses to different training regimens. It can potentially aid in detecting overtraining and inadequate recovery in horses.
• However, the researchers also cautioned that HRV monitoring should be supplemented with other confirmatory measures to rule out other potential causes of underperformance in horses.