Effects of repetition within trials and frequency of trial sessions on quantitative parameters of vertical force peak in horses with naturally occurring lameness.
Abstract: OBJECTIVE To analyze the effects of vertical force peak (VFP) of repition within trials and between trial sessions in horses with naturally occurring appendicular lameness. ANIMALS 20 lame horses acclimated to trotting over a force plate. PROCEDURES Kinetic gait data were collected by use of a force plate regarding affected and contralateral limbs of lame horses that completed 5 valid repetitions in each of 5 sessions performed at 0, 3, 6, 12, and 24 hours, constituting 1 trial/horse. Data were compared within and among repetitions and sessions, and factors influencing VFP values were identified. RESULTS VFP values differed for lame limbs after 3 valid repetitions were performed within a session and when the interval between sessions was 3 hours. Direction of change reflected less lameness (greater VFP). Lamer horses (≥ grade 4/5) had this finding to a greater degree than did less lame horses. Results were similar for contralateral limbs regarding valid repetitions within a session; however, VFP decreased when the interval between sessions exceeded 6 hours. The coefficient of variation for VFP was ≤ 8% within sessions and ≤ 6% between sessions. The asymmetry index for VFP did not change throughout the study. CONCLUSIONS AND CLINICAL RELEVANCE Lameness profiles obtained through kinetic gait analysis of horses with naturally occurring lameness were most accurate when valid repetitions were limited to 3 and the interval between sessions within a trial was > 3 hours. Findings suggested that natural lameness may be as suitable as experimentally induced lameness for lameness research involving horses.
Publication Date: 2016-06-28 PubMed ID: 27347829DOI: 10.2460/ajvr.77.7.756Google Scholar: Lookup
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- Journal Article
Summary
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The research studied how repetition and session frequency change the peak vertical force (VFP) in lame horses, suggesting that lameness assessments are most accurate when limited to 3 repetitions and sessions spaced more than 3 hours apart.
Objective and Subjects
- The study aimed to understand how repetition within trial sessions and the frequency of these sessions affect VFP in horses with natural lameness. The subjects were 20 lame horses accustomed to trotting over a force plate.
Methods
- Researchers collected kinetic gait data from the affected and opposite limbs of the lame horses, each of which completed five valid repetitions across five sessions carried out at intervals of 0, 3, 6, 12, and 24 hours, making one trial per horse.
- The data were compared within and among repetitions and sessions to identify factors influencing VFP values.
Results
- Researchers found that VFP values for lame limbs changed after three valid repetitions within a session and when sessions were spaced 3 hours apart, indicating reduced lameness.
- Severely lame horses displayed this effect more prominently than less lame horses.
- Contralaterally, the results mirrored within-session repetition results, but VFP decreased when sessions were more than 6 hours apart.
- VFP’s coefficient of variation within sessions was no more than 8%, and between sessions it was up to 6%.
- The VFP asymmetry index did not change throughout the experiment.
Conclusions and Clinical Relevance
- The results suggest that the most accurate lameness profiles are obtained when there are only three valid repetitions and when the gap between sessions is more than three hours.
- The study implies that research on lameness in horses could use naturally lame horses as effectively as those with experimentally induced lameness.
Cite This Article
APA
Kaido M, Kilborne AH, Sizemore JL, Reisbig NA, Aarnes TK, Bertone AL.
(2016).
Effects of repetition within trials and frequency of trial sessions on quantitative parameters of vertical force peak in horses with naturally occurring lameness.
Am J Vet Res, 77(7), 756-765.
https://doi.org/10.2460/ajvr.77.7.756 Publication
Researcher Affiliations
MeSH Terms
- Animals
- Biomechanical Phenomena
- Gait
- Horse Diseases / physiopathology
- Horses
- Kinetics
- Lameness, Animal / physiopathology
Citations
This article has been cited 3 times.- Broeckx SY, Martens AM, Bertone AL, Van Brantegem L, Duchateau L, Van Hecke L, Dumoulin M, Oosterlinck M, Chiers K, Hussein H, Pille F, Spaas JH. The use of equine chondrogenic-induced mesenchymal stem cells as a treatment for osteoarthritis: A randomised, double-blinded, placebo-controlled proof-of-concept study.. Equine Vet J 2019 Nov;51(6):787-794.
- Pitti L, Oosterlinck M, Díaz-Bertrana ML, Carrillo JM, Rubio M, Sopena J, Santana A, Vilar JM. Assessment of static posturography and pedobarography for the detection of unilateral forelimb lameness in ponies.. BMC Vet Res 2018 May 2;14(1):151.
- Bertone AL, Reisbig NA, Kilborne AH, Kaido M, Salmanzadeh N, Lovasz R, Sizemore JL, Scheuermann L, Kopp RJ, Zekas LJ, Brokken MT. Equine Dental Pulp Connective Tissue Particles Reduced Lameness in Horses in a Controlled Clinical Trial.. Front Vet Sci 2017;4:31.
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