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The measurement of ground reaction force in dogs trotting on a treadmill: an investigation of habituation.

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Article
H

Fanchon, L. ; Valette, Jean-Paul ; Sanaa, Moez ; Grandjean, Dominique

Veterinary and comparative orthopaedics and traumatology

Unite de Medecine de l'Elevage et du Sport, Ecole Nationale Veterinaire d/Alfort (ENVA), 7, avenue du General de Gaulle, 94700 Maisons Alfort, France.

2006

98527

We studied the time necessary to obtain reliable kinetic data from healthy dogs trotting on a treadmill. Ten adult male Malinois Belgian Shepherd dogs were made to trot on an instrumented treadmill to record the ground reaction force for the entire body and to determine the vertical force variables (peak [PFz], impulse [IFz], stride time [Str], peak time [Tz] and contact time [Ct]). Data were collected from each dog, during three sequences per day, on three consecutive days. In order to determine the contribution of the 'sequence', 'day of measurement', and 'dog' factors and the percentage of variance attributable to dogs, data were analyzed with a linear mixed model. The curve shapes were similar to those obtained with a floor-mounted force platform. Intra-dog coefficients of variation were between 1.57 and 3.46%. Inter-dog coefficients of variation were between 4.18 and 7.82%. A sequence effect was not noted. Each day had a significant effect on all of the data. All variables differed significantly from the first day compared to the other days. However there was not any difference between days 2 and 3. The percentage of the total variance attributable to dogs
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