AVALIAÇÃO DA ASSIMETRIA DOS MEMBROS SUPERIORES DURANTE A ATIVIDADE DE DIGITAÇÃO EM COMPUTADORES DESKTOP E NOTEBOOK
ASSESSMENT OF UPPER LIMB ASYMMETRY DURING COMPUTER TYPING ACTIVITY ON DESKTOPS AND NOTEBOOKS
Josiane Sotrate Gonçalves, Cristiane Shinohara Moriguchi, Karina Satiko Takekawa, Tatiana de Oliveira Sato
Resumo
Este estudo teve como objetivo comparar os lados direito e esquerdo em relação aos movimentos dos membros superiores, atividade muscular e descarga de peso sobre a mesa durante uma atividade simulada de digitação em computadores do tipo desktop e notebook. Quinze estudantes universitárias foram avaliadas durante uma atividade simulada de digitação com duração de cinco minutos nos dois tipos de computador, em ordem aleatorizada. A atividade muscular dos músculos trapézio superior e deltóide anterior foram registrados bilateralmente por meio de eletromiografia. Os movimentos do ombro foram avaliados por meio de inclinômetros e os movimentos do punho e cotovelo foram medidos através da eletrogoniômetros. A descarga de peso do antebraço foi avaliada por células de carga colocadas sob a superfície da mesa. Não houve diferença entre os diferentes tipos de computadores durante a atividade de digitação, porém houve maior sobrecarga musculoesquelética no membro superior direito. Portanto, medidas preventivas e estratégias ergonômicas visando reduzir a assimetria durante o uso de computadores são necessárias.
Palavras-chave
Abstract
This study aimed to compare the right and left sides in relation to the movements of the upper limbs, muscle activity and weight bearing on the table during a simulated activity of typing on the computer desktop and notebook. Fifteen university students were evaluated during five minutes of simulated typing activity in both types of computers. The evaluation order was randomized. Upper trapezius and anterior deltoid activation were recorded bilaterally by surface electromyography. Shoulder movements were assessed by inclinometers, wrist and elbow movements were measured using electrogoniometers. Forearm weight discharge was evaluated by load cells placed under the table surface. There was no difference between the different types of computers during the activity of typing, but musculoskeletal load was higher in the right upper limb. Therefore, preventive measures and ergonomic strategies to reduce the asymmetry between limbs in the use of computers are required.
Translated version DOI: https://doi.org/10.4322/rae.v15e202110.en
Keywords
References
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