Abstract
The aim of this study is to develop the measurement system to analyze the lumbar flection angle during nurse caring assistance motion. In this study, to analyze the burden on the waist of carers, we developed the analysis system to measure flection angles on the lumbar vertebra and sacral vertebra using light-weight and compact wireless motion sensors. The sensors are attached on the twelfth thoracic vertebra projection and the second sacral vertebra to measure these flection angles. The proposed system analyzes the relative angle of these flection angles and indicates an adequate working posture for a carer to prevent a low back pain. The experimental results show that the usefulness of the proposed system reducing the burden on the waist is revealed.
