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Home / Equine Research Bank / PLoS One / Perceived sidedness and correlation to vertical movement asy...
PloS one2023; 18(7); e0288043; doi: 10.1371/journal.pone.0288043

Perceived sidedness and correlation to vertical movement asymmetries in young warmblood horses.

Abstract: The prevalence of vertical asymmetries is high in "owner-sound" warmblood riding horses, however the origin of these asymmetries is unknown. This study investigated correlations between vertical asymmetries and motor laterality. Young warmblood riding horses (N = 65), perceived as free from lameness were evaluated on three visits, each comprising objective gait analysis (inertial measurement units system) and a rider questionnaire on perceived sidedness of the horse. A subgroup (N = 40) of horses were also subjected to a forelimb protraction preference test intended as an assessment of motor laterality. We hypothesized associations between vertical asymmetry and motor laterality as well as rider-perceived sidedness. Vertical asymmetry was quantified as trial means of the stride-by-stride difference between the vertical displacement minima and maxima of the head (HDmin, HDmax) and pelvis (PDmin, PDmax). Laterality indexes, based on counts of which limb was protracted, and binomial tests were used to draw conclusions from the preference tests. In the three visits, 60-70% of horses exhibited vertical asymmetries exceeding clinically used thresholds for ≥1 parameter, and 22% of horses exhibited a side preference in the preference test as judged by binomial tests. Linear mixed models identified a weak but statistically significant correlation between perceived hindlimb weakness and higher PDmin values attributable to either of the hindlimbs (p = 0.023). No other statistically significant correlations to vertical asymmetry were seen for any of the questionnaire answers tested. Tests of correlation between the absolute values of laterality index and asymmetry parameters (HDmin, HDmax, PDmin, PDmax) identified a weak correlation (p = 0.049) with PDmax, but when accounting for the direction of asymmetry and motor laterality, no correlations were seen for either of the asymmetry parameters. No convincing evidence of associations between vertical asymmetries and motor laterality were seen and further studies investigating motor laterality and the origin of vertical asymmetries are needed.
Copyright: © 2023 Leclercq et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Publication Date: 2023-07-07 PubMed ID: 37418437PubMed Central: PMC10328353DOI: 10.1371/journal.pone.0288043Google 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.

This research investigated the connection between vertical movement asymmetries and perceived sidedness in young, healthy warmblood horses. Researchers found a weak and statistically significant correlation between perceived hindlimb weakness and higher vertical asymmetry measurements, but overall, no strong evidence of associations between vertical asymmetry and motor laterality were found.

Research Context

  • This research was conducted due to a high prevalence of vertical asymmetries (difference in movement pattern between the left and right side) in “owner-sound” warmblood horses. The cause of these asymmetries remained unknown and the study wanted to investigate the correlation between these vertical asymmetries and motor laterality (the preference of using one side of the body over the other).

Research Methodology

  • The study was carried out on young, healthy warmblood riding horses that were perceived to be free from lameness.
  • The assessment involved objective gait analysis using an inertial measurement units system, rider questionnaires on perceived sidedness of the horse, and forelimb protraction preference tests to assess motor laterality for a selected subgroup of horses.

Research Findings

  • Findings showed a high prevalence of vertical asymmetries, with 60-70% of horses demonstrating this in ≥1 parameter. A smaller group (22%) exhibited a side preference in the preference tests.
  • The only statistically significant correlation was a weak association between perceived hindlimb weakness and higher vertical asymmetry values, indicating horses with perceived hindlimb weakness showed slightly greater asymmetry in movement.
  • There were no other significant correlations between vertical asymmetry and responses to the rider questionnaire. There was also a weak correlation between absolute values of laterality index and asymmetry parameters, specifically in regard to PDmax, which measures the maximum displacement of the horse’s pelvis. However, when accounting for asymmetry direction and motor laterality, no correlations were established.

Conclusion

  • Overall, the study did not find convincing evidence for a strong association between vertical asymmetries and motor laterality in young warmblood horses.
  • The authors suggest further research is required to explore motor laterality and the origin of vertical asymmetries.

Cite This Article

APA
Leclercq A, Lundblad J, Persson-Sjodin E, Ask K, Zetterberg E, Hernlund E, Haubro Andersen P, Rhodin M. (2023). Perceived sidedness and correlation to vertical movement asymmetries in young warmblood horses. PLoS One, 18(7), e0288043. https://doi.org/10.1371/journal.pone.0288043

Publication

PloS one
ISSN: 1932-6203
NlmUniqueID: 101285081
Country: United States
Language: English
Volume: 18
Issue: 7
Pages: e0288043
PII: e0288043

Researcher Affiliations

Leclercq, Anna
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Lundblad, Johan
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Persson-Sjodin, Emma
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Ask, Katrina
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Zetterberg, Ebba
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Hernlund, Elin
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Haubro Andersen, Pia
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Rhodin, Marie
  • Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.

MeSH Terms

  • Horses
  • Animals
  • Lameness, Animal
  • Head
  • Biomechanical Phenomena
  • Movement
  • Gait
  • Forelimb
  • Upper Extremity
  • Hindlimb
  • Horse Diseases

Conflict of Interest Statement

The authors have declared that no competing interests exist.

References

This article includes 24 references
  1. Hammarberg M, Egenvall A, Pfau T, Rhodin M. Rater agreement of visual lameness assessment in horses during lungeing.. Equine Vet J 2016 Jan;48(1):78-82.
    doi: 10.1111/evj.12385pmc: PMC4964936pubmed: 25399722google scholar: lookup
  2. Keegan KG, Dent EV, Wilson DA, Janicek J, Kramer J, Lacarrubba A, Walsh DM, Cassells MW, Esther TM, Schiltz P, Frees KE, Wilhite CL, Clark JM, Pollitt CC, Shaw R, Norris T. Repeatability of subjective evaluation of lameness in horses.. Equine Vet J 2010 Mar;42(2):92-7.
    doi: 10.2746/042516409X479568pubmed: 20156242google scholar: lookup
  3. Arkell M, Archer RM, Guitian FJ, May SA. Evidence of bias affecting the interpretation of the results of local anaesthetic nerve blocks when assessing lameness in horses.. Vet Rec 2006 Sep 9;159(11):346-9.
    doi: 10.1136/vr.159.11.346pubmed: 16963714google scholar: lookup
  4. Serra Bragança FM, Rhodin M, van Weeren PR. On the brink of daily clinical application of objective gait analysis: What evidence do we have so far from studies using an induced lameness model?. Vet J 2018 Apr;234:11-23.
    doi: 10.1016/j.tvjl.2018.01.006pubmed: 29680381google scholar: lookup
  5. Keegan KG, Kramer J, Yonezawa Y, Maki H, Pai PF, Dent EV, Kellerman TE, Wilson DA, Reed SK. Assessment of repeatability of a wireless, inertial sensor-based lameness evaluation system for horses.. Am J Vet Res 2011 Sep;72(9):1156-63.
    doi: 10.2460/ajvr.72.9.1156pubmed: 21879972google scholar: lookup
  6. Kallerud AS, Fjordbakk CT, Hendrickson EHS, Persson-Sjodin E, Hammarberg M, Rhodin M, Hernlund E. Objectively measured movement asymmetry in yearling Standardbred trotters.. Equine Vet J 2021 May;53(3):590-599.
    doi: 10.1111/evj.13302pubmed: 32558997google scholar: lookup
  7. Müller-Quirin J, Dittmann MT, Roepstorff C, Arpagaus S, Latif SN, Weishaupt MA. Riding Soundness-Comparison of Subjective With Objective Lameness Assessments of Owner-Sound Horses at Trot on a Treadmill.. J Equine Vet Sci 2020 Dec;95:103314.
    doi: 10.1016/j.jevs.2020.103314pubmed: 33276930google scholar: lookup
  8. Pfau T, Parkes RS, Burden ER, Bell N, Fairhurst H, Witte TH. Movement asymmetry in working polo horses.. Equine Vet J 2016 Jul;48(4):517-22.
    doi: 10.1111/evj.12467pubmed: 26037947google scholar: lookup
  9. Rhodin M, Egenvall A, Haubro Andersen P, Pfau T. Head and pelvic movement asymmetries at trot in riding horses in training and perceived as free from lameness by the owner.. PLoS One 2017;12(4):e0176253.
    doi: 10.1371/journal.pone.0176253pmc: PMC5404851pubmed: 28441406google scholar: lookup
  10. Maliye S, Voute LC, Marshall JF. Naturally-occurring forelimb lameness in the horse results in significant compensatory load redistribution during trotting.. Vet J 2015 May;204(2):208-13.
    doi: 10.1016/j.tvjl.2015.03.005pubmed: 25862395google scholar: lookup
  11. Wiper ML. Evolutionary and mechanistic drivers of laterality: A review and new synthesis.. Laterality 2017 Nov;22(6):740-770.
    doi: 10.1080/1357650X.2017.1291658pubmed: 28276877google scholar: lookup
  12. McGreevy PD, Rogers LJ. Motor and sensory laterality in thoroughbred horses. Appl Anim Behav Sci 2005;92: 337–52.
    doi: 10.1016/j.applanim.2004.11.012google scholar: lookup
  13. Murphy J, Sutherland A, Arkins S. Idiosyncratic motor laterality in the horse. Appl Anim Behav Sci 2005;91: 297–310.
    doi: 10.1016/j.applanim.2004.11.001google scholar: lookup
  14. van Heel MC, Kroekenstoel AM, van Dierendonck MC, van Weeren PR, Back W. Uneven feet in a foal may develop as a consequence of lateral grazing behaviour induced by conformational traits.. Equine Vet J 2006 Nov;38(7):646-51.
    doi: 10.2746/042516406x159070pubmed: 17228580google scholar: lookup
  15. van Heel MC, van Dierendonck MC, Kroekenstoel AM, Back W. Lateralised motor behaviour leads to increased unevenness in front feet and asymmetry in athletic performance in young mature Warmblood horses.. Equine Vet J 2010 Jul;42(5):444-50.
    doi: 10.1111/j.2042-3306.2010.00064.xpubmed: 20636782google scholar: lookup
  16. Austin NP, Rogers LJ. Limb preferences and lateralization of aggression, reactivity and vigilance in feral horses, Equus caballus. Anim Behav 2012;83: 239–47.
    doi: 10.1016/j.anbehav.2011.10.033google scholar: lookup
  17. Meij HS, Meij JCP. Functional Asymmetry in the Motor System of the Horse. S Afr J Sci 1980;76: 552–6.
    doi: 10.10520/AJA00382353_4463google scholar: lookup
  18. . R: A language and environment for statistical computing. .
  19. McGraw K, Wong S. Forming Inferences about Some Intraclass Correlation Coefficients. Psychol Methods 1996;1: 30–46.
    doi: 10.1037/1082-989X.1.1.30google scholar: lookup
  20. Revelle W. Procedures for Personality and Psychological Research, ver. 2.2.9. 2022.
  21. Bates D, Maechler M, Bolker B, Walker S. Fitting Linear Mixed-Effects Models Using lme4. Journal of Statistical Software 2015:67: 1–48.
    doi: 10.18637/jss.v067.i01google scholar: lookup
  22. Fox J, Weisberg S. An {R} Companion to Applied Regression. 3rd ed. Thousand Oaks CA: Sage; 2019.
  23. Lenth R. Estimated Marginal Means, aka Least-Squares Means, ver 1.8.1–1.n2022. 2022.
  24. Kuhnke S, König von Borstel U. A comparison of different established and novel methods to determine horses' laterality and their relation to rein tension.. Front Vet Sci 2022;9:789260.
    doi: 10.3389/fvets.2022.789260pmc: PMC9521178pubmed: 36187838google scholar: lookup

Citations

This article has been cited 7 times.
  1. MacKechnie-Guire R, Clayton H, Byström A, Marlin D, Haussler K, Latif S, Blum N, le Jeune SS, Wanless M, Egenvall A. International Survey Exploring Rider-Perceived Sidedness of the Horse. Animals (Basel) 2025 Jul 2;15(13).
    doi: 10.3390/ani15131956pubmed: 40646855google scholar: lookup
  2. Haussler KK, le Jeune SS, MacKechnie-Guire R, Latif SN, Clayton HM. The Challenge of Defining Laterality in Horses: Is It Laterality or Just Asymmetry?. Animals (Basel) 2025 Jan 21;15(3).
    doi: 10.3390/ani15030288pubmed: 39943060google scholar: lookup
  3. Clayton HM, Hobbs SJ, Rhodin M, Hernlund E, Peterson M, Bos R, Bragança FS. Vertical Movement of Head, Withers, and Pelvis of High-Level Dressage Horses Trotting in Hand vs. Being Ridden. Animals (Basel) 2025 Jan 16;15(2).
    doi: 10.3390/ani15020241pubmed: 39858241google scholar: lookup
  4. Zetterberg E, Persson-Sjodin E, Lundblad J, Hernlund E, Rhodin M. Prevalence of movement asymmetries in high-performing riding horses perceived as free from lameness and riders' perception of horse sidedness. PLoS One 2024;19(7):e0308061.
    doi: 10.1371/journal.pone.0308061pubmed: 39078818google scholar: lookup
  5. Dyson S, Pollard D. Determination of Equine Behaviour in Subjectively Non-Lame Ridden Sports Horses and Comparison with Lame Sports Horses Evaluated at Competitions. Animals (Basel) 2024 Jun 20;14(12).
    doi: 10.3390/ani14121831pubmed: 38929449google scholar: lookup
  6. Nagy A, Dyson S. Magnetic Resonance Imaging, Computed Tomographic and Radiographic Findings in the Metacarpophalangeal Joints of 31 Warmblood Showjumpers in Full Work and Competing Regularly. Animals (Basel) 2024 May 9;14(10).
    doi: 10.3390/ani14101417pubmed: 38791635google scholar: lookup
  7. Egenvall A, Clayton HM, Byström A. Pilot study of locomotor asymmetry in horses walking in circles with and without a rider. PeerJ 2023;11:e16373.
    doi: 10.7717/peerj.16373pubmed: 37933258google scholar: lookup
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