Table 2.

Use of body-worn sensors to assess fall risk

Assessment while sensor was used	Applied sensors (range of sampling rates in Hertz)	Body location	Assessed variables
gait analysis (between 7.62 and 400 m) [35, 40, 41, 43, 47, 48, 51, 56, 57, 62]	DynaPort, Trigno wireless systems, Locometrix, X16-1C, ActiGraph, GT3X+, Freescale, DAAF, ETB-Pegasus (30 Hz–296.3 Hz)	head, waist, lower back, pelvis	temporal and spatial gait variables, local dynamic stability variables, variables of gait symmetry, acceleration variables, angle variables
daily-life walking between three to eight days [35, 36, 44, 49, 52, 54, 59]	Senior Mobility Monitor, SHIMMER platform, DynaPort, Opal, BMA280 (50 Hz–128 Hz)	chest, lower back, wrist, upper legs, lower legs	temporal and spatial gait variables, variables of gait symmetry and gait variability, variables of gait complexity and gait smoothness, angle variables, acceleration variables
Timed-Up and Go Test [42, 53, 55, 58, 61, 62]	SHIMMER platform, Freescale, Opal, Mobi8 System, combined sensor (100 Hz–256 Hz)	chest, waist, lower back, upper legs, foot	temporal and spatial gait variables, angular velocity variables, energy variables, angle variables
Tinetti Test [19]	GENEActiv (50 Hz)	chest	temporal and spatial gait variables, balance variables
six-minutes walking test [64]	DYSKIMOT (100 Hz)	lower back	acceleration variables, variables of gait variability
others
standardized protocol with walking and sit to stand transitions [60]	not specified (50 Hz)	around the neck	temporal gait variables, acceleration variables
specially developed test battery [50]	Xsens (100 Hz)	lower back, upper legs, lower legs	temporal and spatial gait variables, angle variables, angular velocity variables,
semi-unsupervised walking and stair ascent and descent [46]	Opal (128 Hz)	lower back, ankle	temporal gait variables, variables of gait variability, variables of movement vigour

All applied sensors contained an accelerometer, a gyroscope or a combination of both