A markerless-motion study comparing 15 people with Parkinson's disease and 15 healthy controls found longer sit-to-stand time, earlier head and trunk initiation and lower peak extension velocities.
Key findings
- The Parkinson's group took longer, initiated head/trunk earlier and had lower head, hip and knee peak extension velocities. Stabilization sway did not differ; AMTA1/2 durations were longer (p=0.037), with clinical correlations |r|=0.365–0.635.
Why this matters globally
Markerless capture may improve access to movement assessment but needs accuracy and clinical-utility validation against reference systems.
Thai researcher contribution
Mahidol and Siriraj researchers generated Thai movement data and prospectively registered the study.
Limitations to consider
Fifteen per group limits precision. Disease severity, medication and ON/OFF state may matter; cross-sectional data do not predict prognosis, and markerless error needs validation.