Table 1.

Overview of the exercise programs

Characteristics	Digital program	Booklet
Exercise presentation	Video clips with oral instructions. A repository of exercises were organized into 10 groups: 5 groups of exercises to increase lower-limb muscle strength, 2 groups to improve balance and 3 groups combining strength and balance in gait and step exercises. Each group contained exercises on different levels of difficulty.	Drawings with written instructions. A repository of exercises were organized into strength and balance exercises, each part divided in 3 different levels of difficulty.
Behaviour change support	Written feedback from virtual physiotherapist, activity planning, monitoring progress (i.e. charting activities and frequency of exercise).	None
Exercise diary	Integrated in digital program	Paper based returned monthly
Safety instructions	Adapted advice for every exercise in the videos and optional advice for every exercise group. General safety information for everyday life.	A page in the booklet presented general safety instructions while doing the exercises.
Other	Examples of exercises integrated into everyday activities and tips on how to do exercises outdoors.	None