The effects of a compressible plastic shoe - The Seattle shoe- on the kinematics of the strides of galloping thoroughbred horses
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This study was undertaken to determine if the kinematic parameters of galloping horses were altered when these horses were shod with Seattle Shoes. Analyses of films of six Thoroughbred horses galloping through a track straightaway, with and without Seattle Shoes, were used to determine velocity, stride length, stride time, swing time and support time ofthelimbs, the percentages of the stride time spent in the swing and support phases, and the arcs of flight of the carpi and fetlocks of the forelimbs and the coronets of all four limbs. Descriptive statistics were calculated for each of these variables. Comparisons were made between those measured from horses shod with and without the Seattle Shoe,usingboththe paired-t test and analysis of covariance, which eliminated the influence of differing velocities. No significant differences occurred in the stride lengths or timing parameters when these horses were shod with Seattle Shoes. The Seattle Shoe had it's most significant effect on the arcs of flight of the limbs. The compression of the Seattle Shoe appears to store a portion of the potential energy normally stored in the suspensory appa- ratus and results in a decreased extension of the fetlock. This energy is then released, causing significant increases in the heights of the forelimb during retraction and protraction. Although kinematic adjustments are required by horses to maintain the level of performance, the Seattle Shoe appears to have no detrimental effects on the performance of galloping horses and it may decrease strain on the suspensory apparatus. 1992, William E. Jones. All rights reserved. All rights reserved.
Journal of Equine Veterinary Science
author list (cited authors)
Wilson, P. D., Ratzlaff, M. H., Grant, B. D., Hyde, M. L., & Balch, O. K.
complete list of authors
Wilson, Patrick D||Ratzlaff, Marc H||Grant, Barrie D||Hyde, Martha L||Balch, Olin K