Table 1.

Overview study endpoints and outcome measures

	Primary outcome	Primary outcome measure:
	Time difference between T0 and T1 needed to perform the motor task ('Going down, laying on the floor, and getting up again')	Time will be given in seconds and will be obtained by the recorded video of the task performance.
	Secondary outcome	Secondary outcome measures
1	Time difference between BL vs. T0 and between T1 vs. FU	Time will be given in seconds and will be obtained by the recorded video of the task performance.
2	Help needed to perform the motor task	Assistance levels of the activity scale of the Chedoke McMaster Stroke Assessment (CMSA)
3	Stage of the motor task	Stage of the motor task by Bergland and Lake will be obtained by the recorded video of the task performance.
4	Imagination inflation	Patients will be asked before each motor task execution during the assessments to predict time they expect to need to perform the motor task.
5	Motor impairment and independence	German version of the extended Barthel index (EBI)
6	Balance	German version of the Berg Balance Scale (BBS)
7	Motor imagery ability	German version of the kinesthetic and visual motor imagery questionnaire (KVIQ-G)
8	Understanding of the motor imagery instructions	German version of the Imaprax software version 1.1
9	Fear of falling (FOF)	German version of the Activities-Specific Balance Confidence Scale (ABC-scale)
10	Intrinsic motivation	Motor imagery diary
11	Mood	Direct question that can be answered on an 11-point VAS: 'How sad do you feel today?'

All outcome measures will be assessed at four times to measure changes over time: twice during the baseline phase, after the intervention, and after the two week follow-up phase.