Evaluation of a portable media device for use in determining postural stability in standing horses.
Abstract: OBJECTIVE To determine the ability of an accelerometer within a commercially available portable media device (PMD) to measure changes in postural stability of standing horses during various stance conditions and to compare these results with data obtained by use of a stationary force platform. ANIMALS 7 clinically normal horses. PROCEDURES A PMD was mounted on a surcingle; the surcingle was placed immediately caudal to the highest point of the shoulders (withers). Each horse was examined while standing on a stationary force platform system in a normal square stance, forelimb base-narrow stance, and normal square stance at 5 and 10 minutes after sedation induced by IV administration of xylazine hydrochloride. A minimum of 5 trials were conducted for each stance condition. Ranges of craniocaudal and mediolateral motion as well as SDs were collected for the PMD and force platform system. Analyses were performed with mixed-model ANOVAs, and correlation coefficients were calculated. RESULTS Stance condition significantly altered craniocaudal accelerations measured by use of the PMD, all craniocaudal and mediolateral displacements of the center of pressure, and velocities measured by use of the stationary force platform. For both the PMD and force platform, SDs were significantly affected by stance condition in both craniocaudal and mediolateral directions. Correlation coefficients between the systems for all variables were low to moderate (r = 0.18 to 0.58). CONCLUSIONS AND CLINICAL RELEVANCE Body-mounted PMDs should be investigated for use in assessment of postural stability in horses with neuromuscular abnormalities.
Publication Date: 2017-08-25 PubMed ID: 28836848DOI: 10.2460/ajvr.78.9.1036Google Scholar: Lookup
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- Evaluation Study
- Journal Article
Summary
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The study explores the effectiveness of an accelerometer within a widely available portable media device (PMD) in monitoring changes in standing horses’ postural stability under different stance conditions. This method was compared with data collected via a stationary force platform, a commonly used instrument in postural stability measurements.
Methodology
- Seven horses, all clinically normal, were utilized for the study.
- A PMD was installed on a surcingle, which was then placed directly behind the highest point on the horse’s shoulders, known as the withers.
- The horses were observed while placed on a stationary force platform system in various stance conditions including: a normal square stance, a forelimb base-narrow stance, and a normal square stance again but after sedation with xylazine hydrochloride, administered intravenously, at intervals of 5 and 10 minutes.
- For each stance condition, a minimum of five trials were conducted.
- Parameters such as ranges of craniocaudal (head-to-tail) and mediolateral (side-to-side) motion, as well as Standard Deviations (SDs) were obtained for both the PMD and the force platform system.
- Analysis was carried out using mixed-model ANOVAs, and correlation coefficients were computed.
Results
- Measurements showed that the stance condition had a significant impact on craniocaudal accelerations as measured by the PMD, all craniocaudal and mediolateral displacements of the center of pressure, and velocities as measured by the stationary force platform.
- SDs, for both the PMD and the force platform, were significantly affected by the stance condition in both craniocaudal and mediolateral directions.
- Low to moderate correlation coefficients (ranging from 0.18 to 0.58) were observed between the measurements obtained from both systems.
Conclusions
- The study concludes that body-mounted PMDs should be considered for use in the assessment of postural stability in horses suffering from neuromuscular abnormalities.
- Despite the low to moderate correlation between the two measurement tools, the PMD can still provide valuable insights into the assessment of postural stability, especially given its portability and wide availability.
Cite This Article
APA
Moorman VJ, Kawcak CE, King MR.
(2017).
Evaluation of a portable media device for use in determining postural stability in standing horses.
Am J Vet Res, 78(9), 1036-1042.
https://doi.org/10.2460/ajvr.78.9.1036 Publication
Researcher Affiliations
MeSH Terms
- Accelerometry / instrumentation
- Accelerometry / veterinary
- Animals
- Computers, Handheld
- Female
- Forelimb
- Horses / physiology
- Male
- Mobile Applications
- Posture
- Pressure
- Xylazine
Citations
This article has been cited 3 times.- Egan S, Brama PAJ, Goulding C, McKeown D, Kearney CM, McGrath D. The Feasibility of Equine Field-Based Postural Sway Analysis Using a Single Inertial Sensor. Sensors (Basel) 2021 Feb 11;21(4).
- Wegscheider J, Lutonsky C, Affenzeller N, Aghapour M, Bockstahler B, Peham C. Determination of the Cutoff Frequency of Smoothing Filters for Center of Pressure (COP) Data via Kinetic Energy in Standing Dogs. Sensors (Basel) 2025 Sep 18;25(18).
- Aghapour M, Affenzeller N, Lutonsky C, Peham C, Tichy A, Bockstahler B. A validation study to analyze the reliability of center of pressure data in static posturography in dogs. Front Vet Sci 2024;11:1353824.
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