fig2

Figure 2. Comparison of baseline physical activity patterns between an iRBD patient who converted to PD (Convertor, 68-year-old male) and a patient who did not convert (Non-converter, 68-year-old male) over a 2-year follow-up period. The converter exhibited lower physical activity at baseline compared to the non-converter. Physical activity was continuously recorded over 7 consecutive days using actigraphy devices. Specifically, the Actiwatch Spectrum Plus (Philips Respironics United Kingdom) was employed, which collects raw activity counts at 100 Hz via 3-axis accelerometers. Data extraction was performed using Philips Actiware version 6, and visualization was generated with the ggplot2 package in R. iRBD: isolated rapid eye movement sleep behavior disorder; PD: Parkinson’s disease.