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A recent study published in the Journal of Orthopaedic & Sports Physical Therapy (JOSPT) investigates the relationship between early sports specialization and hip kinematics in ice hockey goaltenders. Using Theia3D markerless motion capture technology, researchers examined how hip movements differ between early specialized (ES) and non-early specialized (NES) goaltenders. The findings suggest that ES goaltenders demonstrate distinct hip movement patterns, potentially as a strategy to mitigate injury risk. This research provides important insights into training practices, injury prevention, and sport specialization guidelines for young athletes.

A recent study published in PeerJ assessed the reliability of Theia3D’s markerless motion capture system under varying clothing conditions during walking. The findings indicate that both tight and loose-fitting clothing yield consistent gait analysis results, with minimal variation observed between trials and sessions.

It's a new era for Theia! See how our industry-leading AI-powered motion capture software is getting a fresh visual identity for 2025— reflecting our commitment to providing biomechanics professionals with the most advanced AI-powered motion capture tools trusted by researchers, clinicians, and sports scientists worldwide.

The new, highly-anticipated Theia3D release we've been discussing here these past few months is now available for all Theia customers, and to commemorate this exciting release we're giving it a name; Theia3D Apollo! In this blog post, we’ll cover some of the new and exciting changes that come with Theia3D Apollo and provide the relevant links to previous blog posts.

This blog post outlines our approach to R&D and includes links to many peer-reviewed articles using or citing Theia3D.

In this blog post, we outline the newest TMBatch features introduced through the upcoming Theia3D Apollo software release.

In this blog post, we outline the newest features introduced through the upcoming Theia3D Apollo software release.

Theia3D uses a large number of precisely predicted keypoints and an inverse kinematic approach to obtain whole body pose estimates during any movement - but how much is the solution dependent on the IK model and its constraints? In this blog post, we investigate this question by comparing kinematics produced with varying degrees of freedom in the lower limb joints, and find that the kinematic results are largely unchanged - a nod to the robustness of our model and its keypoints.

The Theia3D Apollo update is coming soon! Theia3D kinematics have been evaluated against marker-based data many different times, including against varying model definitions. One of the most apparent differences that has come up during these evaluations are those in the pelvis and hip kinematics due to Theia3D’s use of a neutral pelvis. In this blog post, we continue our lead-up to Theia3D Apollo later this month by discussing the differences and changes that have been made to the Theia3D model which improve on the pelvis and hip kinematics, and go further to improve hip joint center positioning.

Theia3D's 2024 update, Apollo, is fast approaching! Please stay tuned over the next two weeks as we will be releasing multiple blog posts detailing some of the improvements to look forward to later this month! In this blog post, we provide an update on the validation of Theia3D Apollo against Theia 2023 and our reference marker dataset. This includes an examination of numerous biomechanical measures such as segment and joint angles, and shows subtle but meaningful improvements in several measures across multiple movement types, including slow, fast, cyclic, non-cyclic, bilateral, and unilateral movements. For interested readers, we recommend keeping an eye on the blog for more Theia3D Apollo update posts including a discussion of model changes and the effects of varying degrees of freedom on Theia markerless tracking. Stay tuned!

In this blog post, we discuss how to optimize your markerless motion capture system for multi-person data collections. We will also quickly review the preferences menu within Theia3D and answer frequently asked questions related to multi-person tracking situations.

In this follow-up post to our Characteristics of Video Data for New Users post, we’ll highlight some of the important lighting factors to understand so that you can get the best data from your collections.