“…We can see that a diverse range of studies/systems have been conducted/built. Some are for the upper extremity including those for arms [ 14 , 16 , 17 , 20 , 21 , 24 , 25 , 27 , 29 , 31 , 34 , 41 – 43 ], hands/fingers [ 14 , 15 , 18 , 21 , 24 , 27 , 29 – 32 , 34 – 37 , 42 ], and shoulders [ 14 – 18 , 20 , 24 – 27 , 31 , 33 , 34 , 39 , 42 , 43 ], while the others are on the lower extremity including those for ankles [ 22 , 23 , 40 ], gait [ 19 , 23 , 28 , 40 ], balance [ 19 , 23 , 27 , 28 , 40 ], and postural [ 23 , 27 , 28 ]. However, most of these studies are conducted in laboratory setting and thus are less feasible in real clinical scenarios 1 .…”