MATERIAIS E MÉTODOS: Foram testados dois arranjos experimentais (A e B) que diferiam quanto ao número e posicionamento das câmeras, bem como quanto ao volume do sistema de calibração. OBJETIVOS: Desenvolver e comparar dois arranjos experimentais para análise cinemática dos movimentos de cabeça durante a coordenação viso-cefálica (CVC) em lactentes. Na área do desenvolvimento motor, essa análise pode proporcionar uma melhor compreensão da aquisição e do desenvolvimento das habilidades motoras. Kinematic eye-head coordination head movement methodologyĬONTEXTUALIZAÇÃO: A análise cinemática é um método de avaliação quantitativa empregada em diferentes áreas de estudo. The results from such studies could be used to complement assessments on at-risk infants and consequently could assist in implementing early interventions. The methodology for set-up B can be used in studies investigating head movements in either typical or atypical infants. CONCLUSIONS: Although both set-ups were adequate for kinematic analysis of head movements relating to EHC in infants, set-up B is more advantageous. In addition, set-up B presented a better cost-benefit relationship. This led to improvement of the qualitative analysis and reduction of the time taken to process quantitative data, which was 33% shorter than seen with set-up A. The three cameras used in set-up B made it possible to view the full range of motion with at least one of the cameras. RESULTS: The accuracy of the two experimental set-ups was 2.47mm, thus indicating that both can provide realistic reconstructions of the movement. They differed from each other regarding the numbers and locations of the cameras, and regarding the volume of the calibration system. METHODS: Two experimental set-ups (A and B) were tested. OBJECTIVE: To develop and compare two experimental set-ups for kinematic analysis of head movements relating to eye-head coordination (EHC) in infants. In the field of motor development, this analysis may promote better understanding of the acquisition and development of motor skills. BACKGROUND: Kinematic analysis is a method for quantitative assessment applied in different fields of study.
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