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Home / Equine Research Bank / J Anim Physiol Anim Nutr (Berl) / Heart rate variability parameters as markers of the adaptati...
Journal of animal physiology and animal nutrition2019; 103(5); 1538-1545; doi: 10.1111/jpn.13151

Heart rate variability parameters as markers of the adaptation to a sealed environment (a hypoxic normobaric chamber) in the horse.

Abstract: Simulated hypoxic normobaric devices have been used in human beings in order to enhance endurance capacity. These devices are sealed chambers where the athletes are supposed to stay for at least 6-8 hr daily. The current research assesses the changes in time-domain, spectral and non-geometrical heart rate variability (HRV) parameters in 6 horses subjected to progressive duration periods inside of a hermetically sealed chamber. It was pursued, firstly to evaluate the intensity of the stress experienced by the animals and secondly to elucidate whether the horses might require an acclimation period before implementation of hypoxic conditions. HRV parameters were monitored for 6 days: day 0 (6-hr duration; in paddocks; basal conditions), and days 1, 2, 3, 4 and 5 (1, 2, 3, 4 and 6 hr inside the chamber every day respectively). During day 1 and during the first hours of days 2 and 3, compared to day 0, horses presented increased HR and SDHR values and decreased RR interval duration. SD1 values decreased on some hours of days 2 and 3, but differences with day 0 were not found on day 1. Increased SDNN, RMSSD, SD1 and SD2 values were observed on days 4 and 5. These results showed an activation of the sympathetic activity together with an attenuation of the parasympathetic activity during the days 1 to 3. Increased parasympathetic activity was found only during the first hours of days 4 and 5. Spectral parameters experienced minor variations, with increased LF and LF% during some hours of days 4 and 5. In conclusion, at least 3 days are needed to adapt the horse to a sealed environment before starting to subject the animals to hypoxic conditions. When the horses were acclimatized, however, a minor stress was detected with they spent more than 4 hr inside of the chamber.
© 2019 Blackwell Verlag GmbH.
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Publication Date: 2019-07-03 PubMed ID: 31268195DOI: 10.1111/jpn.13151Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research assesses how horses adapt to a sealed environment, similar to those used to enhance endurance capacity in human athletes. Parameters of heart rate variability (HRV) were monitored over a six-day period as exposure in the chamber was increased. Results suggest horses need a minimum of three days to acclimatize. Once adapted, the trainers noticed minor stress when horses spent more than four hours in the chamber.

Research Overview

  • The study was performed to assess changes in time-domain, spectral, and non-geometrical heart rate variability (HRV) parameters in horses as they adapted to a hermetically sealed chamber. The enclosed environment simulates hypoxic normobaric conditions commonly used to enhance human athletes’ endurance capacity.
  • The intention of the study was twofold: Firstly, to evaluate the stress levels experienced by the horses; and secondly, to determine whether horses require an acclimation period before hypoxic conditions are implemented inside the chamber.

Research Methods

  • HRV parameters were monitored over a six-day period with progressive increases in exposure duration inside the chamber.
  • The observation period included: Day 0 (six-hour duration outside the chamber in paddocks), and days 1–5 (with 1, 2, 3, 4, and 6 hours spent in the chamber every day respectively).

Research Findings

  • On the first day, and during the first hours of days 2 and 3, it was noted that the horses had increased heart rate (HR) and standard deviation of HR (SDHR) values, and decreased RR interval duration compared to Day 0.
  • In the later days (4 and 5), increased SDNN, RMSSD (root mean square of successive differences), SD1, and SD2 values were observed, which indicated increased parasympathetic activity in the first hours of these days.
  • There were minor variations in spectral parameters, with increased low frequency (LF) and LF% during some hours of days 4 and 5.

Conclusions

  • The research concluded that horses need at least three days to adapt to the sealed environment. This is critical information for anyone planning to use this sort of training environment for horses.
  • Once the horses were acclimatized, lesser stress was detected when the duration inside the chamber exceeded four hours.

Cite This Article

APA
Muñoz A, Castejón-Riber C, Castejón F, Rubio DM, Riber C. (2019). Heart rate variability parameters as markers of the adaptation to a sealed environment (a hypoxic normobaric chamber) in the horse. J Anim Physiol Anim Nutr (Berl), 103(5), 1538-1545. https://doi.org/10.1111/jpn.13151

Publication

Journal of animal physiology and animal nutrition
ISSN: 1439-0396
NlmUniqueID: 101126979
Country: Germany
Language: English
Volume: 103
Issue: 5
Pages: 1538-1545

Researcher Affiliations

Muñoz, Ana
  • Equine Sport Medicine Center CEMEDE, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
  • Department of Animal Medicine and Surgery, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
Castejón-Riber, Cristina
  • Equine Sport Medicine Center CEMEDE, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
  • Department of Artistic and Corporal Expression, School of Educational Sciences, University of Córdoba, Cordoba, Spain.
Castejón, Francisco
  • Equine Sport Medicine Center CEMEDE, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
  • Department of Animal Biology, Physiology and Immunology, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
Rubio, Dolores M
  • Department of Animal Biology, Physiology and Immunology, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
Riber, Cristina
  • Equine Sport Medicine Center CEMEDE, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.
  • Department of Animal Medicine and Surgery, School of Veterinary Medicine, University of Córdoba, Cordoba, Spain.

MeSH Terms

  • Adaptation, Physiological
  • Animals
  • Female
  • Heart Rate / physiology
  • Horses / physiology
  • Male
  • Oxygen
  • Stress, Physiological

References

This article includes 29 references
  1. Becker-Birck M, Schmidt A, Wulf M, Aurich J, Von der Wense A, Möstl E, Aurich C. Cortisol release, heart rate and heart rate variability, and superficial body temperature, in horses lunged either with hyperflexion of the neck or with an extended head and neck position. Journal of Animal Physiology and Animal Nutrition 97, 322-330.
    doi: 10.1111/j.1439-0396.2012.01274.xgoogle scholar: lookup
  2. Britton A, Shipley M, Malik M, Hnatkova K, Hemingway H, Marmot M. Changes in heart rate and heart rate variability over time in middle-aged men and women in the general population (from the Whitehall II Cohort Study). American Journal of Cardiology 100(3), 524-527.
    doi: 10.1016/j.amjcard.2007.03.056google scholar: lookup
  3. Coppel J, Hennis P, Gilbert-Kawai E, Grocott M P. The physiological effects of hypobaric hypoxia versus normobaric hypoxia: A systematic review of crossover trials. Extreme Physiology & Medicine 4, 2.
    doi: 10.1186/s13728-014-0021-6google scholar: lookup
  4. Greene H M, Cogger E A, Miltenberger T L, Koch A K, Bray R E, Wickler S J. Metabolic and osmoregulatory function at low and high (3800 m) altitude. Equine Veterinary Journal 34, 545-550.
    doi: 10.1111/j.2042-3306.2002.tb05480.xgoogle scholar: lookup
  5. Greene H M, Hurson M J, Wickler S J. Haematological and respiratory gas changes in horses and mules exercised at altitude (3800 m). Equine Veterinary Journal 36, 551-556.
    doi: 10.1111/j.2042-3306.2006.tb05603.xgoogle scholar: lookup
  6. Greene H M, Wickler S J, Anderson T P, Cogger E A, Lewis C C, Wyle A. High-altitude effects on respiratory gases, acid-base balance and pulmonary artery pressures in equids. Equine Veterinary Journal 30, 71-76.
    doi: 10.1111/j.2042-3306.1999.tb05192.xgoogle scholar: lookup
  7. Ille N, Erber R, Aurich C, Aurich J. Comparison of heart rate and heart rate variability obtained by heart rate monitors and simultaneously recorded electrocardiogram signals in nonexercising horses. Journal of Veterinary Behaviour 9(6), 341-346.
    doi: 10.1016/j.jveb.2014.07.006google scholar: lookup
  8. Kowalik S, Janczarek I, Kedzierski W, Stachurska A, Wilk I. The effect of relaxing massage on heart rate and heart rate variability in purebred Arabian racehorses. Animal Science Journal 88(4), 669-677.
    doi: 10.1111/asj.12671google scholar: lookup
  9. Kuwahara H, Hiraga A, Kai M, Tusbone H, Sugano S. Influence of training on autonomic nervous function in horses: Evaluation by power spectral analysis of heart rate variability. Equine Veterinary Journal 20, 178-180.
    doi: 10.1111/j.2042-3306.1999.tb05213.xgoogle scholar: lookup
  10. Mazzeo R S. Altitude, exercise and immune function. Exercise Immunology Reviews 11, 6-16.
  11. McConachie E L, Giguère S, Rapoport G, Barton M H. Heart rate variability in horses with acute gastrointestinal disease requiring exploratory laparotomy. Journal of Veterinary Emergency and Critical Care (San Antonio, Tex.) 26(2), 269-280.
    doi: 10.1111/vec.12362google scholar: lookup
  12. McLean B D, Gore C J, Kemp J. Application of live low - train high for enhancing normoxic exercise performance in team sport athletes. Sports Medicine 44, 1275-1287.
    doi: 10.1007/s40279-014-0204-8google scholar: lookup
  13. Minero M, Zucca D, Canali E. A note on novel stimulus and restrain by therapeutic riding horses. Applied Animal Behaviour Science 97(2-3), 335-342.
    doi: 10.1016/j.applanim.2005.07.004google scholar: lookup
  14. Morton J P, Cable N T. Effects of intermittent hypoxic training on aerobic and anaerobic performance. Ergonomics 48, 1535-1546.
    doi: 10.1080/00140130500100959google scholar: lookup
  15. Munsters C C B M, Visser K E K, van den Broek J, Sloet van Oldruitenborgh-Oosterbaan M M. The influence of challenging objects and horse-rider matching on heart rate, heart rate variability and behavioural score in riding horses. The Veterinary Journal 192(1), 75-80.
    doi: 10.1016/j.tvjl.2011.04.011google scholar: lookup
  16. Nagel C, Erber R, Ille N, Von Lewinski M, Aurich J, Möstl E, Aurich C. Parturition in horses is dominated by parasympathetic activity of the autonomous nervous system. Theriogenology 82(1), 160-168.
    doi: 10.1016/j.theriogenology.2014.03.015google scholar: lookup
  17. Ohmura H, Hiraga A, Aida H, Kuwahara M, Tsubone H, Jones J H. Changes in heart rate and heart rate variability in Thoroughbreds during prolonged road transportation. American Journal of Veterinary Research 67(3), 455-462.
    doi: 10.2460/ajvr.67.3.455google scholar: lookup
  18. Okabe K, Mukai K, Ohmura H, Takahashi T, Miyata H. Effect of acute high-intensity exercise in normobaric hypoxia on Thoroughbred skeletal muscle. Journal of Sports Medicine and Physical Fitness 57(5), 711-719.
    doi: 10.23736/s0022-4707.16.06154-5google scholar: lookup
  19. Pasing S, Von Lewinski M, Wulf M, Erber R, Aurich C. Influence of semen collection on salivary cortisol release, heart rate, and heart rate variability in stallions. Theriogenology 80(3), 256-261.
    doi: 10.1016/j.theriogenology.2013.04.003google scholar: lookup
  20. Rusko H K, Tikkanen H O, Peltonen J E. Altitude and endurance training. Journal of Sports Science 22, 928-944.
    doi: 10.1080/02640410400005933google scholar: lookup
  21. Schmidt A, Aurich J, Möstl E, Müller J, Aurich C. Changes in cortisol release and heart rate and heart rate variability during the initial training of 3-year-old sport horses. Hormones and Behavior 58, 628-636.
    doi: 10.1016/j.yhbeh.2010.06.011google scholar: lookup
  22. Schmidt A, Hödl S, Möstl E, Aurich J, Müller J, Aurich C. Cortisol release, heart rate, and heart rate variability in transport-naïve horses during repeated road transport. Domestic Animal Endocrinology 39(3), 205-213.
    doi: 10.1016/j.domaniend.2010.06.002google scholar: lookup
  23. Schmidt A, Möstl E, Wehnert C, Aurich J, Müller J, Aurich C. Cortisol release and heart rate variability in horses during road transport. Hormones and Behavior 57(2), 209-215.
    doi: 10.1016/j.yhbeh.2009.11.003google scholar: lookup
  24. Schönbom H, Kassens A, Hopster-Iversen C, Klewitz J, Piechotta M, Martisson G, Sieme H. Influence of transrectal and transabdominal ultrasound examination on salivary cortisol, heart rate, and heart rate variability in mares. Theriogenology 83(4), 749-756.
    doi: 10.1016/j.theriogenology.2014google scholar: lookup
  25. Tarvainen M P, Niskanen J-P, Lipoonen J A, Ranta-Aho P O, Karjalainen P A. Kubios HRV- Heart rate variability analysis software. Computer Methods and Programs in Biomedicine 113, 210-220.
    doi: 10.1016/j.cmpb.2013.07.024google scholar: lookup
  26. Vitale V, Balocchi R, Varanini M, Sgorbini M, Macerata A, Sighieri C, Baragli P. The effects of restriction of movement on the reliability of heart rate variability measurements in the horse (Equus caballus). Journal of Veterinary Behaviour 8(5), 400-403.
    doi: 10.1016/j.jveb.2013.02.003google scholar: lookup
  27. Von Borrell E, Langbein J, Desprès G, Hansen S, Leterrier C, Marchant-Forde J, Veissier I. Heart rate variability as a measure of autonomic regulation of cardiac activity for assessing stress and welfare in farm animals- A review. Physiology & Behaviour 3(22), 293-316.
    doi: 10.1016/j.physbeh.2007.01.007google scholar: lookup
  28. Von Lewinski M, Biau S, Erber R, Ille N, Aurich J, Faure J M, Aurich C. Cortisol release, heart rate and heart rate variability in the horse and its rider: Different responses to training and performance. The Veterinary Journal 197(2), 229-232.
    doi: 10.1016/j.tvjl.2012.12.025google scholar: lookup
  29. Wickler S J, Greene H M. High altitude acclimatization and athletic performance in horses. Equine and Comparative Exercise Physiology 1(3), 167-170.
    doi: 10.1079/ecep200424google scholar: lookup

Citations

This article has been cited 1 times.
  1. Chueainta P, Punyapornwithaya V, Tangjitjaroen W, Pongkan W, Boonyapakorn C. Acupuncture Improves Heart Rate Variability, Oxidative Stress Level, Exercise Tolerance, and Quality of Life in Tracheal Collapse Dogs. Vet Sci 2022 Feb 18;9(2).
    doi: 10.3390/vetsci9020088pubmed: 35202341google scholar: lookup
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