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Objectively measured movement asymmetry in yearling Standardbred trotters

Kallerud, Anne S. and Fjordbakk, Cathrine T. and Hendrickson, Eli H. S. and Persson Sjödin, Emma and Hammarberg, Marie and Rhodin, Marie and Hernlund, Elin (2021). Objectively measured movement asymmetry in yearling Standardbred trotters. Equine Veterinary Journal. 53 , 590-599
[Research article]

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Abstract

Background Lameness evaluation of Standardbred trotters can be challenging due to discrepancies in observed movement asymmetry between in-hand and track exercise, and between different trotting speeds. There are few studies on objective measurement of movement in Standardbreds, and little knowledge regarding biological variation and clinical significance of measured movement asymmetry in this breed. Objectives To quantify the prevalence and magnitude of objectively measured movement asymmetry in young Standardbred trotters, and identify associations with trainer, sex, height, track type and in-hand measurement prior to or after track trials. Study design Cross-sectional, observational study. Methods A total of 114 Standardbred yearlings were evaluated with a wireless inertial sensor system during trot in-hand and when driven on a track. After exclusions relating to lameness or technical difficulties, 103 horses were included in the study; 77 were evaluated in-hand and on the track, 24 only in-hand and 2 only on the track. Results Front and/or hindlimb parameters were above asymmetry thresholds previously established for other breeds during in-hand trials for 94 (93%) horses and during track trials for 74 (94%) horses. Most horses showed mild asymmetry. A minority of horses (20%) switched side of the asymmetry for one or more parameters between in-hand and track trials. Mixed model analyses revealed no significant effects of trial mode (in-hand or track trial, in-hand trial pre- or post-track trial, straight or oval track), trainer or horse height. Females had a significant but small reduction in asymmetry in one front limb parameter (HDmax) compared with males (1.7 mm, 95% CI 0.18-3.28,P = .03). Main limitations High data variability, reflected in large trial standard deviations, relating mainly to a lack of horse compliance. Conclusions A high proportion of Standardbred yearlings showed movement asymmetries. There was no group-level effect between in-hand and track trials, however, considerable individual variation was observed.

Authors/Creators:Kallerud, Anne S. and Fjordbakk, Cathrine T. and Hendrickson, Eli H. S. and Persson Sjödin, Emma and Hammarberg, Marie and Rhodin, Marie and Hernlund, Elin
Title:Objectively measured movement asymmetry in yearling Standardbred trotters
Series Name/Journal:Equine Veterinary Journal
Year of publishing :2021
Volume:53
Page range:590-599
Number of Pages:10
Publisher:WILEY
ISSN:0425-1644
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Medical Bioscience
Keywords:horse, lameness, harness racing, IMU, locomotion
URN:NBN:urn:nbn:se:slu:epsilon-p-107210
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107210
Additional ID:
Type of IDID
DOI10.1111/evj.13302
Web of Science (WoS)000547664000001
ID Code:24343
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Anatomy, Physiology and Biochemistry
Deposited By: SLUpub Connector
Deposited On:01 Jun 2021 14:03
Metadata Last Modified:01 Jun 2021 14:11

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