When comparing markerless and marker-based motion capture, researchers often find differences in the kinematic outputs. But how much of these discrepancies are true differences in how the movement is measured, and how much comes down to how each system defines the anatomical reference frames? A new study out of Rush University Medical Center and Aesculap AG explores this question using Theia3D - and finds that aligning coordinate systems dramatically improves agreement between systems.

Tonal’s biomechanics team uses Theia3D markerless motion capture to accelerate research, validate motion models, and power features like Smart View. Learn how they’ve streamlined data collection, scaled biomechanics across participants, and turned lab insights into real-time, personalized strength training.

A recent study published in Frontiers in Sports and Active Living highlights how brief technique modification training can significantly improve change of direction (COD) performance in adolescent soccer players. Using a markerless motion capture system, the study demonstrated measurable improvements in COD mechanics. This research underscores the value of markerless technology like Theia3D for coaches and sports scientists aiming to optimize performance and reduce injury in adolescent athletes.