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Ombro e elevacao do braco. Analise cinematica e electromiografica sobre a influencia da carga externa e velocidade do braco no ritmo escapulo umeral tridimensional

By Augusto Gil Brites de Andrade Pascoal


Thesis deals on kinematics and EMG activity of shoulder and arm elevation according with two main goals: obtain insight in the 3D scapulo-humeral rhythm (3D_SHR) as shoulder functional evaluation parameter; and a developing evaluation instruments for shoulder evaluation. The 3D_SHR has been described as an individual and stable parameter nevertheless an unclear understanding of the external load and velocity effects. Chapters III and V, describe the effects of the external load, respectively, on 3D scapular and clavicular position and on the recruitment pattern of the shoulder muscles. Results showed that the shoulder girdle position change when the magnitude of the external increases, which is accompanied by an increase on thoraco-scapular muscles activation with respect scapulo-humeral muscles. A model of the scapulo-humeral rhythm, composed by five linear regression equations was developed, which predicts the 3D shoulder girdle position using as co variates: humerus orientation, external load and the initial shoulder position. The model facilitates the shoulder functional evaluation on clinics, sport and ergonomics. Chapter Vi describe changes on EMG related with scapulo-humeral rhythm during three velocity and external load conditions. Finally, three protocols describe the Fob System and Ariel System calibration, and the use of video recording system on shoulder studiesAvailable from Fundacao para a Ciencia e a Tecnologia, Servico de Informacao e Documentacao, Av. D. Carlos I, 126, 1249-074 Lisboa, Portugal / FCT - Fundação para o Ciência e a TecnologiaSIGLEPTPortuga

Year: 2001
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