Fig. 5

Effect estimations of user-centered design variables on CYBATHLON performance: The individual estimates of each independent variable from the explorative mixed linear model are visualized. Variables and factor levels indicated in green showed a significant positive effect on RR (higher score/category = higher RR) and those indicated in red showed a significant negative effect (higher score/category = lower RR). Variables in green did not show a significant effect. Levels of significance are remarked as * = p < 0.05, ** = p < 0.01 and *** = p < 0.001