SYS/EV · THE RESEARCH

Four perspectives on movement assessment

Explore the published research informing our approach.

Step 01

Nobody agrees what recovered means.

Return-to-sport testing has no shared standard. Ask 1,154 clinicians in 78 countries how they clear an athlete and you get 157 different combinations of tests. Almost everyone uses multiple devices, averaging 3.6 of them. Fewer than half test against defined criteria at all.

So what should we be measuring? ↓
Step 02

The core is where the answer lives.

Core stability is not a posture. It is the ability to control the trunk over the pelvis while force transfers out to the limbs, which means it has to be judged dynamically, in three planes. And it is not academic: core capacity measured before a season predicts who gets injured during it.

How much does the trunk actually matter? ↓
Step 03

Where the trunk goes, the knee pays.

Constrain the trunk during a cut and knee energy absorption jumps by roughly a quarter. Train an athlete to cut faster and the same braking mechanics that buy the speed also drive the knee abduction moment. Performance and risk share a mechanism, so watching one without the other is guesswork. Trunk control is also trainable, which is what makes measuring it useful rather than merely interesting.

Can a machine see it better than an eye? ↓
Step 04

Movement data can inform assessment.

The papers below examine return-to-performance recommendations and movement-based classification after ACL reconstruction. Their findings raise questions for product research. The classification result belongs to a study combining biomechanical and EMG data; it is not a CoreMotion result.

Research informs the next question. →

Papers are provided for reference and remain the copyright of their respective publishers. Links open the full PDF.