Gait analysis using 3D accelerometry in horses sedated with xylazine

López‐Sanromán, Javier; Holmbak-Petersen, R.; Santiago, I.; Segura, Ignacio A. Gómez de; Barrey, Éric

doi:10.1016/j.tvjl.2011.10.012

Cited by 29 publications

(44 citation statements)

References 30 publications

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“…In the latter condition, the inhibitory sedative effect probably reduced accelerations in all directions. These results are similar to what was shown by L opez-Sanrom an et al [9]. We also found significant effects of sedation on COP displacement and path length measures, consistent with increased motion and postural sway present in xylazine-induced ataxic horses.…”

Section: Discussionsupporting

confidence: 92%

“…In addition, this is the first study to show how quantifiable gait parameters change significantly when horses are walked down a slope and when they are walked with their heads in an elevated position. Kinematic data showed a dose‐dependent development of longer slower strides in sedated horses, consistent with what 2 other studies have shown . This change is likely to be largely due to the direct central inhibitory effect of xylazine while horses maintain a certain speed on the treadmill, ultimately resulting in the combination of reduced stride frequency and increased stride length.…”

Section: Discussionsupporting

confidence: 88%

“…There is currently no alternative (reversible) equine model in which to study ataxia. A side effect of α‐2 agonists is induction of ataxia ; 2 significant advantages of a xylazine‐induced equine ataxia model are that the resulting ataxia is dose‐dependent, as seen here and as has been reported previously , and the mechanism of development of the gait deficits is the same across animals. Here, all HD horses were graded 3 and LD horses were grade 1 or 2 for ataxia.…”

Section: Discussionsupporting

confidence: 74%

See 2 more Smart Citations

Objective assessment of gait in xylazine‐induced ataxic horses

Nout‐Lomas

Page

Kang

et al. 2016

Equine Veterinary Journal

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Administration of xylazine induced a dose-dependent ataxia in horses and resulted in significant changes of gait parameters, pelvic accelerations, and stabilographic variables, some of which changed in a dose-dependent fashion. Some of the altered gait parameters in this model were probably a result of overall slowing down of the stride cycle secondary to the sedative effect. Continued efforts to discover and evaluate quantifiable gait parameters that are susceptible to change following development of clinical neurological disease in horses is warranted.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 88%

Section: Discussionsupporting

confidence: 74%

See 1 more Smart Citation

Objective assessment of gait in xylazine‐induced ataxic horses

Nout‐Lomas

Page

Kang

et al. 2016

Equine Veterinary Journal

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“…Eredményeik alapján jól detektálható a gyógyszer hatása a mozgásra. 6 A lovak mindhárom jármódjának vizsgálatával foglalkozó publikációk célkitűzései sokrétűek: a ló mozgásának biomechanikai jellemzése; 7 a lóra adaptált patkószenzor kifejlesztése; 8 más validált vizsgálatokkal való összevetés; 9 az optimális mérési pontok meghatározása. 10 A lovasterápia járásfejlesztő hatását vizsgáló publikációkban a kapott gyorsulási paramé-terek alapján a ló és ember gyorsulási értékei hasonlóságot mutattak, így következtetésük-ben a lovasterápia ehhez kapcsolódó lehetséges járásfejlesztő hatását emelik ki.…”

Section: Eredeti Közleményekunclassified

Phase visualisation of the horse's single stride cycle in eight periods and its synchronization with the wither's two dimensional acceleration

Pálinkás¹,

Manó²,

Soha³

et al. 2016

Biomech Hung

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AbsztraktA lépés jármód, a magasabb jármódokkal ellentétben kevésbé vizsgált, értelmezett és kutatott mozgásforma, melynek oka talán a lovas-és lóversenyek mögött álló jelentős finanszírozásban keresendő. A hippoterápia lóval végzett mozgásterápia, melynek során lépés jármódban dolgozunk, így alapos ismerete és megértése kulcsfontosságú a kezelés eredményességében. Munkánk célja, hogy a lépés jármódot elemeire bontsuk, képileg könnyen érthetővé tegyük, és az objektív mérési adatokkal szinkron kétirányú fázisazonosítást végezzünk. A mérést egy két elemes gyorsulásmérő segítségével végeztük nyolc gidrán egyeden, lépés jármódban, kézen vezetve. A kapott gyorsulási adatokat összesítve egy átlagos elmozdulási görbét kaptunk, melyre a ló előrehaladó mozgását illesztve beazonosítottuk a korábban fázisaira bontott lépéselemeket. A kapott görbe a lépésben haladó ló hátmozgásának előre és oldalra történő kitérését mutatja. A hippoterápiával foglalkozó szakemberek a lépő ló mellett haladva leginkább annak előrehaladó mozgását, törzsének oldalra kilengését érzékelik. Munkánkkal, a kezelés kulcsának, azaz a hát finom mozgásának jobb megértéséhez kerültünk közelebb. További célunk, hogy a mozgást szinkron videó felvétellel, több mérési ponttal, nagyobb egyedszámmal és egyéb lófajtákkal is elvégezzük. Kulcsszavak: hippoterápia, lépés, mozgáselemzés, gyorsulásmérésPhase visualisation of the horse's single stride cycle in eight periods and its synchronization with the wither's two dimensional acceleration Abstract Horse stride, contrary to trot or gallop is less examined and researched, which may be backgrounded at a higher horse race financing. Hippotherapy is a part of physiotherapy taking advantage of the striding horses back movements. Thorough comprehension of horse gait, specially stride is a key to the treatment value. This study aims at the horse gait cycle sectionalize, visualize and use synchronized objective parameters identify phase correlation in two dimension. We made measurement using two tri-axial accelerometer by eight gidran horse, leading by halter-rope in stride. Acceleration data were counted into averaged displacement, and next the horse locomotion with measured speed was calculated, which resulted an averaged displacement curve. This curve shows the horse withers movement in the saggital and lateral plane. We identified elements of horse gait cycles stride phases. For hippotherapists walking by the horse the most perceptible horse movement is the forward and lateral trunk amplitude. With this study we came closer to the key of treatment, consequently to understand the horse back fine movement. Further studies aim synchronized video recording with more accelerometer and several horse breed.

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“…Many researchers have proposed novel methods to evaluate variable gait parameters such as walking speed and gait events [6][7][8][9]. Inertial sensors such as gyroscopes [10,11], accelerometers [12,13] and magnetic sensors [14] are small and easy to be integrated in the portable and wearable devices for the measurement of orientations of human body.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Human Gait Using a Wearable System with Force Sensors and Inertial Sensors

Liu

Inoue

2015

Wearable Electronics Sensors

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Abstract. Six-axial force sensors and inertial sensors were used together to construct a wireless wearable sensor system for the successive and non-laboratory measurement of gait. The system consists of the wearable sensor shoes and motion sensors. In order to diminish the influence of motion acceleration in the measurements of accelerometers and the disturbance of surrounding magnetic field in the measurements of magnetic sensors, we modified the Extended Kalman Filter to check the values of the acceleration and magnetic field intensity before updating. And a reference system composed of high speed cameras and stationary force plates are used to validate the reliability of the wearable system. The experiment results showed that the wearable system is able to measure the ground reaction force (GRF), joint angles, joint forces and joint moments.

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Gait analysis using 3D accelerometry in horses sedated with xylazine

Cited by 29 publications

References 30 publications

Objective assessment of gait in xylazine‐induced ataxic horses

Objective assessment of gait in xylazine‐induced ataxic horses

Phase visualisation of the horse's single stride cycle in eight periods and its synchronization with the wither's two dimensional acceleration

Measurement of Human Gait Using a Wearable System with Force Sensors and Inertial Sensors

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