How Usable Is Your Motion Capture System?

July 10, 2025
Theia
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Recent Posts
New Research on Theia3D: Comparing Markerless and Marker-Based Shoulder Kinematics Across Full Arm Range of Motion
A 2025 study published in the Journal of Biomechanics compared shoulder kinematics measured with Theia3D markerless motion capture against gold-standard marker-based motion capture across full arm ranges of motion. The results show strong agreement for many movements, particularly in the coronal plane, while also highlighting where caution is still required, especially at the extremes of ranges of motion and in transverse-plane rotations.
Baseball Tracking System: A Practical Guide to Evaluating Your Options
Baseball tracking systems can measure everything from ball flight and bat path to workload and full-body biomechanics, but each category answers a different question. This guide compares leading options and explains how to choose the right system based on what your program needs to measure, where it will operate, and whether it can connect athlete mechanics to baseball outcomes.
How to Choose Motion Analysis Software: Features, Accuracy, and Workflow Fit
Choosing motion analysis software depends on more than whether it can track movement. This guide compares leading tools by output type, setup complexity, validation, data ownership, and workflow fit so research and performance teams can choose the right system for their needs.

Summary

In this series, we're unpacking the STRN Quality Framework — a set of 25 measurable features across 5 pillars for evaluating motion capture systems. This post covers Pillar D: Usability, examining how Theia3D performs on ease of setup, workflow efficiency, and participant burden in biomechanics research environments.

How easy is your motion capture system to actually use outside of the lab?

The STRN Quality Framework doesn't just assess accuracy or ethics. It also challenges sports technologies to deliver a user experience that's intuitive, efficient, and accessible across real-world environments. That's the focus of Pillar D: User Experience.


What Pillar D Covers

Usability: Theia3D was designed to make advanced motion capture accessible to everyone — from biomechanics labs to sports researchers and performance teams. Independent studies using the System Usability Scale and NASA Task Load Index rated both experienced and first-time users as finding it easy to use and low in workload, even with just one hour of training. In one study, 11 participants completed 231 total trials in just 102 minutes, averaging >2 trials per minute.

Robustness: Theia3D runs reliably across a range of hardware configurations and real-world settings. The software supports four generations of NVIDIA GPUs dating back to 2018. We actively resolve bugs and user-reported issues through fast-turnaround support and regular software updates.

Data Representation: Theia3D provides skeleton overlay videos, in-app angle plots, and flexible export formats (.C3D, .FBX, .JSON). Outputs integrate with Qualisys, Vicon Nexus, and analysis tools like Visual3D.

Customer Support & Training: Our support team consists of trained biomechanists with advanced degrees in engineering and over 25 years of combined hands-on research experience. All support tickets are addressed same-day. Every new customer receives 2 live onboarding sessions (90–120 minutes), plus tailored feedback on sample data. Onboarding met 100% of participants' expectations with an average 122% increase in reported understanding.

Accessibility: Theia3D's interface has been tested against WCAG Level AAA for color contrast. Onboarding and education are available through live training, detailed written documentation, and short tutorial videos. Keyboard navigation is supported for key operations.

Contact us to discuss how Theia3D’s user experience fits your lab or research program needs.

Recent Posts
New Research on Theia3D: Comparing Markerless and Marker-Based Shoulder Kinematics Across Full Arm Range of Motion
A 2025 study published in the Journal of Biomechanics compared shoulder kinematics measured with Theia3D markerless motion capture against gold-standard marker-based motion capture across full arm ranges of motion. The results show strong agreement for many movements, particularly in the coronal plane, while also highlighting where caution is still required, especially at the extremes of ranges of motion and in transverse-plane rotations.
Baseball Tracking System: A Practical Guide to Evaluating Your Options
Baseball tracking systems can measure everything from ball flight and bat path to workload and full-body biomechanics, but each category answers a different question. This guide compares leading options and explains how to choose the right system based on what your program needs to measure, where it will operate, and whether it can connect athlete mechanics to baseball outcomes.
How to Choose Motion Analysis Software: Features, Accuracy, and Workflow Fit
Choosing motion analysis software depends on more than whether it can track movement. This guide compares leading tools by output type, setup complexity, validation, data ownership, and workflow fit so research and performance teams can choose the right system for their needs.
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Summary