Executive Summary Gait variability—particularly stride-time variability (STV) and stride-length variability—has emerged as a promising but context-dependent digital signal for Parkinson’s disease (PD). Across recent studies, STV is repeatedly sensitive to disease state and intervention effects, yet its interpretability hinges on speed control, environment (overground vs treadmill), fatigue, footwear, and surface. Real-world, continuous measurement via wearables… Continue reading Gait Variability in Parkinson’s Disease: A Researcher White Paper (2022–2025)
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