Using EMG Sensor WooridulChair Usability Evaluation

Background: Recently, modern people most of the time learning or office work is carried out sitting in a chair and neck, shoulder, back and waist pain on people are increasing by the upper body fatigue that comes from a long time incomplete position. Objective: Therefore in this study, when office work and learning activities time for the prevention of musculoskeletal disorders, on the chest support of the chair and stool for the existing process through usability testing is to verify the effectiveness. Method: Especially, progressed measurement that use EMG sensor and surveyed to evaluate fatigue degree of reagent"s upper body main region simultaneously. The 20~27 year-old college students subject, 6 or more hours daily use chairs, 1 hour in a given situation, neck, shoulders, back and waist were measured at the EMG. Results: In the case of experiment result chest support chair, keep attitude right relatively, can know that fatigue degree of muscle appears to be less than general chair. Conclusion: Through this study, the chest support chair"s effects for the maintenance of good posture and the could be verified, of the future, development of office chairs is expected to have a positive impact.