OpenCap combines advances in computer vision, machine learning, and musculoskeletal simulation to make movement analysis widely available without specialized hardware, software, or expertise.
We validated OpenCap, against laboratory-based measurements in a cohort of individuals for a set of tasks including gait, squat, sit-to-stand, and drop vertical jump:
- 4.5° error in joint angles
- 6.2% bodyweight error in ground reaction forces
- 1.2% bodyweight*height error in joint moments
We also demonstrated OpenCap's usefulness for applications including screening for disease risk, evaluating intervention efficacy, and informing rehabilitation decisions.
