Table 3 Themes resulting from the thematic analysis of secondary end users’ data

1

From the SEUs’ perspectives, a functional and individualized meaningful game design is of great importance to OAs for increasing training motivation

2

The fall protection device in the ExerCube is expected to provide OAs with a feeling of safety that will allow them to train at their individual performance limits

3

Based on the therapists' experience, digital gamification in therapy leads to an increased motivation in OAs

4

The game environment provides an opportunity to distract OAs from their functional limitations and allows them to unconsciously move more freely

5

The availability and perceived time demands of an exergame may limit its usability

6

A lack of local accessibility to and availability of the exergame after discharge from a rehabilitation center and an unawareness of alternative, non-computerized training strategies may influence adherence negatively