Box 1.

Search strategy and classification of barriers and motivators

We searched for references in PubMed with the terms “Parkinson disease”, “Parkinson”, “Exercise”, “Physical Activity”, “Locomotion”, “Motivation”, “Motivator”, “Enabler”, “Facilitator”, “Barrier”, “Experience”, “Attitude to Health”, “Attitude”. We scrutinized data on compliance-related factors published in cross-sectional studies, randomized controlled trials and reviews.

We classified the barriers and motivators to exercise from a patient perspective according to the International Classification of Functioning, Disability and Health (ICF) [41]. The ICF framework is commonly used by healthcare professionals and involves factors related to body function and structure, activities and participation, environmental factors and personal factors.