VALIDATION WITH VIDEOMETRY OF AN INTEGRATED SYSTEM TO ASSESS HORIZONTAL INTRA-CYCLIC VELOCITY WITH A MECHANICAL SPEED-METER

  • Tiago M Barbosa
  • Mário J Costa
  • Jorge E Morais
  • Sérgio Jesus
  • António J. Silva
  • José Batista
  • José Gonçalves
Keywords: validate, evaluation, instrument, speed fluctuation, locomotion

Abstract

The aim of this paper was to: validate an integrated system (i.e., software application and hardware after calibration) to assess human‟s horizontal intra-cyclic velocity with a mechanical speedo-meter. System validation was done for a set of land-based human locomotion techniques (from slow walk to maximal running) in four subjects and comparing it with a videometric system (i.e. APAS). There were no significant differences between pair wise data (speedo-meter versus APAS data) using student„s t-test for both velocity coefficient of variation and maximal velocity. Linear regression models were very high for both the velocity coefficient of variation and maximal velocity. More than 80% of the Bland-Altman plots were within 1.96 standard-deviations.