Inclusion Criteria:  Neurologist diagnosed Idiopathic PD at least 6 months previous to inclusion. Hoehn & Yahr stages I-III Stable in anti-Parkinson medications three months prior to inclusion. The ability to walk walk independently indoors without a walking aid. The ability to walk continually with/without a walking aid for at least 5 minutes.  Exclusion Criteria:  Cognitive impairment affecting the ability to understand or follow verbal or written instructions (Montreal Cognitive Assessment ≤ 21 points). Impaired vision and/or impaired communication which hinders participation. Major problems with freezing and/or two or more falls in the month previous to inclusion. Other existing neurological/ orthopedic or cardiovascular disease which impedes the performance of unsupervised exercise in the home. No internet connection in the home.