This study explores home-based training to help people with movement disorders like ataxia (a condition causing coordination problems) or Parkinson’s disease (a disorder affecting movement). Participants will join a three-week video-based training at home, which aims to improve their walking and balance. The training comes in two formats: one with 20 minutes a day for four days a week, and another with 40 minutes a day for two days a week. Before starting, everyone undergoes a one-week familiarization phase. Afterward, participants are randomly divided into two training groups or a control group that does not receive training. The control group can complete the training later.

• The study lasts about three weeks, with three visits to the University Hospital Düsseldorf.
• Participants must have a clinical diagnosis of cerebellar ataxia or idiopathic Parkinson's.
• The study is voluntary, with participants free to leave anytime without consequences.

Participants can use their smartphones to record movement data at home, which helps better understand everyday movements. Those interested must be adults, able to walk independently, and not have conditions affecting their motor skills or a high risk of falling. If risks outweigh benefits, the study will be stopped.