Table 4 Assistive devices used in the different studies

Costamagna et al. [5]

instrumented four-wheeled walker

Choi et al. [20]

four-wheeled walker (V4208, Jinsan Medical, Seoul, Korea)

Härdi et al. [21]

single-tip cane

forearm crutch

four-wheeled walker

Hunter et al. [22]

four-wheeled walker

Kegelmeyer et al. [23]

aluminium straight cane (Harvey Surgical Supply Corporation)

standard walker (Graham-Field Health Products)

two-wheeled walker with fixed wheels (Medline Industries)

four-wheeled walker with front swivel casters (Invacare Corporation)

U-Step walker with six swivel wheels and a laser (In-Step Mobility Products)

Lindemann et al. [7]

four-wheeled walker, of which the front wheels were 360° rotatable for navigation and the rear wheels were fixed

Lindemann et al. [6]

four-wheeled walker (Ideal, Meyra, Kalletal-Kalldorf, Germany) of which the 2 front wheels were 360° rotatable

Liu et al. [24]

rolling walker

Mahoney et al. [25]

two-wheeled walker (Lumex Incorporated, model number 6054)

three-wheeled walker (Rajowalt Corporation, model number 4200428)

Martins et al. [26]

crutches

standard walker

rollator with forearm supports (RFS ASBGo)

Protas et al. [27]

WalkAbout

standard wheeled walker

Merry Walker

Rampp et al. [28]

four-wheeled walker (Bischoff and Bischoff GmbH, Model B)

Schülein et al. [2]

four-wheeled walker (Bischoff and Bischoff GmbH, Model B)

Schwenk et al. [29]

four-wheeled walker

Tereso et al. [30]

crutches

standard walker

rollator with forearm supports (RFS)

Tung et al. [31]

rollator

Wang et al. [17]

instrumented three-wheeled walker