Fig. 1

(A) Overview of the developed angle measurement system. The system consists of IMU sensors, a tablet-based application, and a battery charger. (B) The specialized belts for the upper, lower limbs, lower back, and trunk were used in the study. The surface has Velcro fasteners for attachment. (C) The specialized attachment used in the study. The IMU sensor was inserted in the attachment, which was secured to the belt worn on the body with the Velcro fastener.
IMU: inertial measurement unit.