SciELO - Scientific Electronic Library Online

 
vol.10 número1Análise da força articular resultante entre diferentes movimentos do ombro com e sem carga: estudo preliminarAvaliação dos princípios tácticos em jovens futebolistas de diferentes idades índice de autoresíndice de assuntosPesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Revista Portuguesa de Ciências do Desporto

versão impressa ISSN 1645-0523

Resumo

RIBEIRO, Daniel Cury  e  LOSS, Jefferson Fagundes. 3D model for analysis of resultant proximal reaction forces and moments for the upper limb. Rev. Port. Cien. Desp. [online]. 2010, vol.10, n.1, pp.137-146. ISSN 1645-0523.

Objectives: The aim of this study was to implement a biomechanical model, with linked segments associated with inverse dynamics, to analyze proximal net forces and moments during different upper limbs’ activities. Methods: one male subject performed flexion, extension and abduction of the shoulder and flexion of the elbow. The model is composed of five connected rigid segments (hand, forearm, arm, scapula and trunk). The Newton-Euler motion equations were used to quantify proximal net reaction forces and moments. For kinematics recording, five cameras with a frequency sample of 50 fps were used. Videogrammetry accuracy was, on average, 1,7mm. The following muscles had their activities monitored: deltoid (anterior, medial, posterior), biceps brachialis, triceps brachialis, pectoralis major. The model was evaluated by qualitative comparison of proximal net moments with electromyographic signal of agonist muscles. Results: The results showed a temporal synchronism between the proximal net moments and agonist EMG activity. Conclusions: The model was able to estimate proximal net forces and moments during different upper limbs’ activities.

Palavras-chave : upper extremity; electromyography; inverse dynamics 3D.

        · resumo em Português     · texto em Português     · Português ( pdf )