An interactive look at Parkinsonian movement from two research
datasets. Compare gait, arm-swing and balance across participants and cohorts — and view
real wearable-sensor motion next to clinically-modelled motion.
Two kinds of 3D motion
Schematic For Gait, TUG,
Balance and Free, the figure's pose is generated from the selected PPMI
participant's clinical metrics (UPDRS-III, gait speed, arm-swing amplitude, tremor). It
illustrates those numbers — it is not a recording.
IMU-derived WearGait plays real
motion reconstructed from body-worn inertial sensors (Synapse WearGait-PD). Gait timing and
arm-swing are measured; knees, trunk and other joints are estimated. The tag in the model's
corner always shows which mode you're in.
Motion tests
- Gait / Walking — modelled steady-state walking.
- WearGait — real measured walking; pick one of 42 recordings.
- Timed Up & Go — sit → stand → walk → turn → sit.
- Postural Sway / Balance — quiet standing with body sway.
- Free / Idle — neutral resting pose.
The 3D model
- Drag to orbit, scroll to zoom; the chips set Front / Side / Top / ¾ views.
- An amber-tinted limb marks the more-affected side (greater arm-swing asymmetry).
- Play / Pause / Reset and the Speed slider control playback.
The charts
- Cohort scatter — any two metrics across participants; the selected one is starred.
- Bilateral arm-swing — left vs right amplitude; distance from the diagonal is asymmetry.
- Arm-swing waveform — arm angle over the gait cycle (schematic) or the measured WearGait clip.
- Movement-quality radar — coordination, dual-task tolerance, smoothness, speed.
What to look for
- Reduced and asymmetric arm-swing is an early, characteristic sign of PD — compare a PD participant with a control.
- Slower gait, higher dual-task cost and higher UPDRS-III all track greater motor severity.
Research and education only — not a diagnostic or clinical tool.