This study looks at how brisk walking affects people with Parkinson's disease, a condition that affects the brain and makes movement difficult. **Brisk walking** means walking quickly, like when you're in a hurry but not running. The study is 24 weeks long and aims to see if walking can help those with Parkinson's walk better and feel more confident. People in the study will be divided into three groups: one with a personalized walking program, another with an activity tracker (a device that records how much you move), and a control group that just continues their usual activities.

• Participants are tested at the start (0 weeks), after 24 weeks, and after a follow-up period (48 weeks).
• They will be randomly placed into one of the three groups.
• All groups will follow their assigned activities for 24 weeks.

This study hopes to find out if brisk walking can help reduce walking difficulties and which type of walking program works best. There are no drugs involved, just walking activities, making it a low-risk study. Participants must be 40 or older, diagnosed with Parkinson's, and have some walking difficulties to join.