Fig. 3

Stability results for the various test conditions of “Standing up” and “Sitting down”, using the standard frame “Standard” or the prototype frame “PR”, with the following hand positions: both hands on seat “Seat”, both hands on armrest “Armrest”, both hands on grips of the prototype frame “Both Grips”, one hand on grip of the prototype frame and the other on the armrest “Grip + Armrest”, and one hand on grip of prototype frame with the other on the seat “Grip + Seat”. Shown are group averages and standard deviations for the average SMmin (‘Avg SMmin’, top) and the minimum SMmin (‘SMmin’, bottom). P values of < 0.05 for paired comparisons are indicated with “*”