Uso de acelerômetros para a avaliação do andamento de equinos marchadores

Abstract

Currently there is a need to improve techniques for evaluating the movements of horses. Developed an electronic device, called the Impact Meter Equine for gait analysis of horses and has been a comparative analysis between the results of the device and the scores of questions of subjective evaluations of a single assessor. We used 46 horses, mounted, with saddle blanket and patterned. Was obtained in the march four passages of each animal, totaling 184 passages. The mathematical treatment of data was performed by analyzing the time series of each passage for each animal in each axis X (antero-posterior), Y (lateral-medial) and Z (dorso-ventral), the electronic device. We calculated the mean curve for each axis, of each animal and interpolated to the time series for 250 points. Of the three axes, X, Y and Z, it was estimated their integral values and also a resulting integral value per animal. Descriptive statistics were calculated, means, standard deviations, minimum and maximum values and coefficients of variation for all variables, the study was conducted Spearman correlations between all the notes of the requirements of the march and the results obtained by the electronic device after treatment mathematical study of canonical correlations and segregation of animals into groups. There are correlations between the items evaluated in the march of high magnitude, being largest between gesture and convenience, 0,90. Among the questions the march and the integral values X, Y, Z, and full results, correlations were also of high magnitude, being largest between convenience and integral Z, -0,66 and convenience and complete result of -0,73, showing that animals tend to become more comfortable in smaller vibrations integral Z (dorso-ventral) and resulting integral. The correlations between the integral values X, Y, Z, and resulting integral, were high between the Z integral and integral resulting from 0,85, representing that the integral Z contributes proportionally more to the formation of the resulting integral and contributing to the validation equipment. The canonical correlations allow the formation of self-vectors V1 and W1, which represent the combination of linear equations for the factors of vibration and the criteria evaluated in the march. The canonical correlation was 0,83, with 69% explanation of variation in data, is also effective for validating the electronic device and enabling the separation of groups of animals above and below and its descriptive analysis.