歩行環境と荷物重量が歩容および上肢の筋活動に与える影響

抄録

The main cause of accidents occurring in works is that the unexpected high loads applied to the body during several motion. Visualization and quantification of the load acting on body have potentials to prevent the accidents before happens and to develop assistive technologies. Surface electromyography is often used to evaluate the muscle activities in the rehabilitation and sports fields. However, the electric signals detected through the electrodes attached at the human body surface are susceptible to the noise with the presence of sweat and body hair. Therefore, the prior skin treatment is required to avoid the bad electrical contacts. Recently, force myography (FMG) has been proposed as a simple measurement method by using the detection of contact force between the sensor and the body. In this study, an FMG-based pushing device which measures the reaction force relating the change of body hardness was fabricated. And muscle activities in the upper limb were measured during walk with holding a heavy load. As a result, the effects to lift the weight and to up the stair showed in the muscle activity evaluated in FMG measurements.