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Table 14 Serious usability issues identified on version 2

From: Evaluating the usability of a co-designed power assisted exercise graphical user interface for people with stroke

Category

V2 problem

Proposed amendment

Safety

Countdown to machine starting too short

Increase from 3 to 5 s

Potential for user to proceed into baseline assessment without assistance

Create a security code for this area of the submenu

Help icon not visible enough

Explore colour options, e.g. red icon

Operational

Concept of baseline assessment unclear

Address through staff training and information video

Purpose of assistance for baseline assessment unclear

Address through staff training and information video

Did not notice the ‘measurement/programme’ subtext

Increase size and darken colour of font

Cannot select duration in ‘my programme’ menu

Add this function in the same format as used in ‘quick start’ menu

Programme effectiveness

Purpose of target intensity circle not obvious

Include explanation in information video and review biofeedback graphics

Selected intensity not displayed

Add the selected number to the ‘live exercise’ menu

No feedback if you press the plus or minus icons for intensity

Display intensity number selected

User experience

Unquantified metrics do not represent meaningful feedback on performance

Continue user involvement programme to identify optimal metrics