Table 2.

Motivators to start with exercise or to remain engaged in exercise, as these have been described for persons with PD. References are grouped according to the type of study (randomized clinical trial – RCT, cohort study, qualitative study or review)

	RCTs	Cohort studies	Qualitative studies	Reviews
Factors related to body structure and function
Perceived positive effect of exercise on PD motor- and non-motor symptoms once started with exercise			[10]	[16]
Factors related to activities and participation
Ability to incorporate exercise in daily routine			[10, 25]	[11, 26]
Personal factors
Sufficient self-efficacy			[19, 22]	[16, 24]
Belief that
physical activity is beneficial for health in general		[18]	[10]
physical activity can impact disease manifestation
persons with PD can have control over PD motor- and non-motor symptoms with exercise		[18]	[11, 23]	[16]
		[10, 15]
Desire to
maintain independence				[16]
delay progression of PD			[10]
re-frame one’s identity as ‘active’			[15]
Program individually tailored to
abilities and interest	[13, 14]	[19, 20]		[11, 16]
personal goals	[13]		[10, 15]	[16, 24]
Perceived positive effect of exercise on health or performance in general once started with exercise			[23]	[26]
High educational level		[22]
Environmental factors
Social support by family or friends	[12]	[18, 19, 21]	[10, 23, 25, 28]	[11, 16]
Professional support (e.g., by a trainer for coaching)	[12–14]	[21]	[15, 28]	[16, 24, 26]
Education about benefits of exercise or recommendation of exercise by neurologist	[14]	[21]	[10]	[11, 16, 24, 26]
Social interaction with peers during exercise		[21]	[15, 23]	[11, 16, 26]
Drawing strength from comparison to peers with more advanced symptoms during group exercise				[16, 24]
Mastery experiences	[13]		[23]	[24]
Feedback on performance	[13, 14]		[15]	[11, 26]
Rewards				[11]