Fig. 2

(A) Test device used in the Experiment (1) The test device repeatedly rotates back and forth, with a baseline of 0°, reaching 42.5° on each side. (B) The position of the IMU sensors attached to the human body. Red circles indicate sensor attachment sites. (C) An example view of angle measurement in the Experiment (2) The joint angle was measured simultaneously using the developed system and universal goniometer.
IMU: inertial measurement unit.