Development of a new instrument for evaluating leg motions using acceleration sensors (II)

Table 1 Correlation coefficient between average acceleration, FRT, hurdle walk test, TMIG index of competence, and fall risk assessment, respectively

Position	Axes/direction of the acceleration sensor	FRT	Hurdle walk test	TMIG index of competence	Fall risk assessment
Lumbar	B–F axis	0.216	−0.134	0.037	0.180
	R–L axis	0.202	−0.069	−0.144	0.141
	U–D axis	0.204	−0.083	−0.074	0.123
Knee	B–F axis	0.194	−0.191	−0.240	−0.193
	R–L axis	0.299	−0.273	−0.095	0.293
	U–D axis	0.322	−0.355	−0.293	0.051
Ankle	B–F axis	0.183	−0.252	0.021	0.034
	R–L axis	0.126	−0.313	0.123	0.228
	U–D axis	0.177	−0.068	0.007	−0.068
Toe	B–F axis	−0.120	−0.014	−0.127	−0.098
	R–L axis	−0.120	−0.014	−0.127	−0.098
	U–D axis	0.119	−0.050	−0.270	−0.216
FRT			−0.450*	−0.195	−0.143
Hurdle walk test				0.102	0.000
TMIG index of competence					0.549**

* P < 0.05, ** P < 0.01
FRT Functional reach test, TMIG Tokyo Metropolitan Institute of Gerontology, B–F back–front, R–L right–left, U–D up–down

ISSN: 1347-4715