Barbosa, Tiago M.Costa, M.J.Morais, J.E.Jesus, SérgioSilva, A.J.Batista, JoséGonçalves, José2011-09-092011-09-092011Barbosa, Tiago M.; Costa, Mário; Morais, Jorge; Jesus, Sérgio; Silva, António; Batista, José; Gonçalves, José (2011). Validation with videometry of an integrated system to assess horizontal intra-cyclic velocity with a mechanical speedo-meter. Revista Portuguesa de Ciências do Desporto. ISSN 1645-0523. p. 833-835http://hdl.handle.net/10198/6117The 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 where 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.engInstrumentLocomotionjournal article