Table 2 Variables at a glance in relation to conceptual and theoretical perspectives

ICF (WHO, 2001)

• Personal factors: e.g. sex, age, coping, self-efficacy

• Body functions: e.g. motor and cognitive symptoms, pain

• Activity: e.g. activities of daily living (ADL), walking

• Participation: e.g. recreation and leisure, social interactions

• Environmental factors: e.g. physical environmental barriers, assistive products and technology, support by others, and relationships

P-E fit and perceived aspects of home

• Personal component (P): functional limitations and dependence on mobility devices

• Environmental component (E): physical environmental barriers

• Perceived aspects of home: housing satisfaction, usability of the home, meaning of home and housing-related control beliefs

PD-specific aspects/problems

• Motor symptoms: tremor, brady- and hypokinesia

• Non-motor symptoms: e.g. depression and fatigue

• Gait: e.g. freezing of gait (FOG)

• Balance problems: e.g. near falls, falls, fall-related self-efficacy, activity avoidance due to the risk of falling, dual task difficulties, and a clinical assessment of the postural response in relation to an external perturbation

• Complications of therapy: e.g. experiencing fluctuations and/or dyskinesias

Since people with PD suffer from slowness and difficulties in performing daily transfers, two timed tests are included that tap mobility: walking and rising from a chair.