Validation of Lumbar Compressive Force Simulation in Forward Flexion Condition

Safety standard requirements must be implemented for lumbar support robots, which are mainly used preventing low back pain (LBP) in caregivers. Usually, simulations to mimic actions that not allowed a real person. However, comprehensive validation of simulator dynamic conditions has been conducted. In this study, an ergonomic is validated through forward flexion invasive experiments. The correspondence between the simulated and experimental compressive force (CF), as well CF obtained using two existing models about unified angle, investigated. results show error measurements at angle 30∘ 11.8% lower than those other (16.8% 20.6%). Linear regression shows data estimated close (slope = 1) Merryweather’s model but Potvin’s model. We evaluate precision by intraclass correlation coefficient method. moderately consistent with measurements, R–0.685 0.627 0 30∘, while good consistency R–0.879 0836 30∘.