Abstract
Manual handling is one of the factors that increase the risk of upper limb disorders. Especially, most of workers in Japanese primary industries still do such operations in high risk. The purpose of this study is to reduce upper limb burden during manual handling in primary industries. We performed work observation and simulated work experiment with biological information measurement. As a result, we found out that wrist support is effective to reduce the burden. Moreover, we developed the prototype wrist support which assists dorsiflexion, and measured wrist joint angle and EMG during the simulated work with it. The effect of reducing the burden has been confirmed by the measurement data.
