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Journal of the autonomic nervous system1996; 60(1-2); 43-48; doi: 10.1016/0165-1838(96)00028-8

Assessment of autonomic nervous function by power spectral analysis of heart rate variability in the horse.

Abstract: We studied power spectral analysis of heart rate (HR) variability in the horse, with the hypothesis that the quantitative information provided by the spectral analysis of HR variability reflects the interaction between sympathetic and parasympathetic regulatory activities. For this purpose, electrocardiogram, blood pressure (BP) and respiratory (Resp) waveform were simultaneously recorded from Thoroughbred horses (3-5 years old) and analyzed by power spectrum. There were two major spectral components at low-frequency (LF) and high-frequency (HF) bands for HR variability. The peak of Resp variability clearly occurred at the HF range. In contrast to Resp variability, the power spectra of BP variability occurred at lower frequencies. The maximum coherence between HR and Resp variabilities and HR and BP variabilities occurred at approximately 0.15 and approximately 0.03 Hz, respectively. These relationships were similar to the ensemble spectra. On the basis of these data, we have defined two frequency bands of interest: LF (0.01-0.07 Hz) and HF (0.07-0.6 Hz). Therefore, we believe that power spectral analysis of HR variability provides a very powerful technique for assessing autonomic nervous activity in the horse.
Publication Date: 1996-08-27 PubMed ID: 8884694DOI: 10.1016/0165-1838(96)00028-8Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

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 explores the use of power spectral analysis of heart rate variability to evaluate the autonomic nervous activity in horses. The study contends that this method aids in understanding the interaction between parasympathetic and sympathetic regulatory activities.

Research Aim and Design

  • The primary goal of this research was to investigate and substantiate the usefulness of power spectral analysis in assessing autonomic nervous activity in horses.
  • The research was predicated on the hypothesis that the spectral analysis of heart rate variability provides crucial quantitative information that reflects the interaction between sympathetic and parasympathetic activities which are two branches of the autonomic nervous system.
  • In order to verify this hypothesis, the researchers collected and analyzed data from a number of biological systems in Thoroughbred horses aged between 3-5 years, including their electrocardiogram, blood pressure, and respiratory waveform.

Research Findings

  • The power spectral analysis of heart rate variability exhibited two major spectral components at both low-frequency (LF) and high-frequency (HF) bands.
  • The highest peak of respiratory variability was evidently present within the high-frequency range, contrasting with the blood pressure variability power spectra, which happened at lower frequencies.
  • The maximum coherence between heart rate and respiratory variabilities and heart rate and blood pressure variabilities occurred at roughly 0.15 Hz and 0.03 Hz respectively, lack distinct differences when compared with the entirety of the analyzed frequencies.

Conclusions and Implications

  • The researchers concluded their study by defining two frequency bands of interest: low frequency (0.01-0.07 Hz) and high frequency (0.07-0.6 Hz).
  • Based on their findings, the researchers assert that power spectral analysis of heart rate variability offers an extremely effective technique for evaluating autonomic nervous activity in horses.
  • The success of this technique could potentially improve future studies or applications targeting the interaction between sympathetic and parasympathetic regulatory systems in horses and possibly other animals as well.

Cite This Article

APA
Kuwahara M, Hashimoto S, Ishii K, Yagi Y, Hada T, Hiraga A, Kai M, Kubo K, Oki H, Tsubone H, Sugano S. (1996). Assessment of autonomic nervous function by power spectral analysis of heart rate variability in the horse. J Auton Nerv Syst, 60(1-2), 43-48. https://doi.org/10.1016/0165-1838(96)00028-8

Publication

ISSN: 0165-1838
NlmUniqueID: 8003419
Country: Netherlands
Language: English
Volume: 60
Issue: 1-2
Pages: 43-48

Researcher Affiliations

Kuwahara, M
  • Department of Comparative Pathophysiology, Graduate School of Agriculture and Life Sciences, University of Tokyo, Japan.
Hashimoto, S
    Ishii, K
      Yagi, Y
        Hada, T
          Hiraga, A
            Kai, M
              Kubo, K
                Oki, H
                  Tsubone, H
                    Sugano, S

                      MeSH Terms

                      • Animals
                      • Autonomic Nervous System / physiology
                      • Blood Pressure / physiology
                      • Electrocardiography
                      • Heart Rate / physiology
                      • Horses

                      Citations

                      This article has been cited 31 times.
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