China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (6): 2098-2104.doi: 10.16431/j.cnki.1671-7236.2022.06.010

• Physiological and Biochemical • Previous Articles     Next Articles

The Effect of Training on Yili Horse 1 600 m Test Results and Heart Rate Variability

LI Xueyan1, MENG Jun1,2,3, YI Haibo4, ZENG Yaqi1,2,3, WANG Jianwen1,2,3, WANG Chuankun1, REN Wanlu1, YAO Xinkui1,2,3, YAN Jiabao1, ZHANG Weilong1   

  1. 1. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China;
    3. Xinjiang Key Laboratory of Horse Breeding and Sports Physiology, Urumqi 830052, China;
    4. Animal Husbandry and Veterinary Station of Kaxiajiaer Town, Zhaosu County, Zhaosu 835600, China
  • Received:2021-11-22 Online:2022-06-05 Published:2022-05-27

Abstract: 【Objective】 The objective of this study was to analyze the effect of different training stages on the performance and heart rate variability(HRV) of Yili horses and to provide data for reference in the conditioning training of 1 600 m distance Yili horses.【Method】 Eight 3-year-old Yili horses (stallions) were selected as test subjects.A 3-month speed specific performance training program was conducted, and a speed test race was organized in the last week of each month of training, and HRV was collected before, immediately after, 0.5 h after, and 1 h after 1 600 m test race.Among them, the time-domain indexes included the mean of all R-R intervals (Mean RR), the standard deviation of all R-R intervals (SDNN), the mean heart rate (Mean HR), the root mean square of the difference between adjacent R-R intervals (RMSSD), the number of adjacent R-R intervals with a difference greater than 50 ms (NN50), and the percentage of adjacent R-R intervals with a difference greater than 50 ms to the total number of heartbeats (pNN50).Frequency domain metrics included very low frequency (VLF), low frequency power (LF), high frequency power (HF) and nonlinear metrics:standard deviation (Y) of all R-R-spacing (SD1), standard deviation (X) of all R-R-spacing (SD2).Consequently, the variability of HRV indexes in horses at different training stages was analyzed.【Result】 The race time in the post training period in 1 600 m speed test race of Yili horses was significantly lower than that in the early training period (P<0.05), and Mean RR, NN50 and pNN50 in the middle and post training periods were significantly lower than that in the early training period (P<0.05).Mean HR in the beginning of training was significantly lower than that in post training (P<0.05).VLF and LF in the end of training were significantly lower than that in the beginning of training (P<0.05).【Conclusion】 Under the conditions of this test, the HRV indexes of 1 600 m test race of Yili horses in different conditioning training stages were analyzed.The outcomes demonstrated that the types of neural activity in Yili horses at the beginning, middle and end of training presented some differences, showing changes of increased sympathetic excitability and decreased parasympathetic excitability, and the horses' athletic performance improved.Therefore, HRV could be considered as an effective tool to evaluate the training load and intensity of Yili horses during training.

Key words: Yili horse; training; heart rate variability(HRV)

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