Real-time measurement of pelvis and trunk kinematics during treadmill locomotion using a low-cost depth-sensing camera: A concurrent validity study.

摘要: There is currently no suitable kinematic system for a large-scale prospective trial assessing risk factors of musculoskeletal disorders. A practical described which involves the use single low-cost depth-sensing camera real-time measurement 3-dimensional linear and angular pelvic trunk range-of-movement (ROM). The method based on creation processing dynamic point clouds taken from posterior surface pelvis trunk. Nine healthy participants performed 3 trials treadmill locomotion when walking at self-selected speed (3.6-5.6 km/h), running 70% (10.9-14.0 km/h) 90% maximal (14.0-18.0 km/h). Stride-by-stride ROM data were captured concurrently using 30 Hz (Kinect(TM) Windows, Microsoft, USA) six-camera motion capture 100 (Vicon MX13, Vicon Motion Systems, United Kingdom). Within subject correlation coefficients between criterion ranged very large to nearly perfect (r=0.87-1.00) ROM. Correlation moderate (r=0.41-0.80). limits agreement two systems movements ≤ 9.9 mm all velocities gait 4.6° gait. technology capable capturing during with reasonable precision compared method. Further improvements angles validation across wider population are recommended.