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Ground reaction force and hoof deceleration patterns on two different surfaces at the trot

Published online by Cambridge University Press:  01 November 2006

Pia Gustås*
Affiliation:
Department of Anatomy and Physiology, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
Christopher Johnston
Affiliation:
Department of Anatomy and Physiology, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden Department of Clinical Sciences, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
Stig Drevemo
Affiliation:
Department of Anatomy and Physiology, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
*
*Corresponding author: [email protected]
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Abstract

The objective of the present study was to compare the hoof deceleration and ground reaction forces following impact on two different surfaces. Seven unshod Standardbreds were trotted by hand at 3.0–5.7 m s− 1 over a force plate covered by either of the two surfaces, sandpaper or a 1 cm layer of sand. Impact deceleration data were recorded from one triaxial accelerometer mounted on the fore- and hind hooves, respectively. Ground reaction force data were obtained synchronously from a force plate, sampled at 4.8 kHz. The differences between the two surfaces were studied by analysing representative deceleration and force variables for individual horses. The maximum horizontal peak deceleration and the loading rates of the vertical and the horizontal forces were significantly higher on sandpaper compared with the sand surface (P < 0.001). In addition, the initial vertical deceleration was significantly higher on sandpaper in the forelimb (P < 0.001). In conclusion, it was shown that the different qualities of the ground surface result in differences in the hoof-braking pattern, which may be of great importance for the strength of the distal horse limb also at slow speeds.

Type
Research Paper
Copyright
Copyright © Cambridge University Press 2006

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