Table 1.

Correlation analysis of the IMU-derived parameters from the gait assessment with the SPPB and subgroup comparisons.

IMU-Derived Parameter	Correlation with SPPB Total Score		Sub-Group Comparison
	ρ	p	H(2)	p
Stride duration	−0.690	<0.001 *	19.805	<0.001 *
Stance duration	−0.754	<0.001 *	24.071	<0.001 *
Swing duration	−0.362	0.015	5.761	0.056
Hip ROM	0.717	<0.001 *	25.918	<0.001 *
Knee ROM	0.741	<0.001 *	26.125	<0.001 *
Ankle ROM	0.537	0.001 *	13.591	<0.001 *
Cadence	0.678	<0.001 *	17.506	<0.001 *
SSD	−0.552	<0.001 *	14.057	<0.001 *
ACC	0.300	0.045	7.469	0.024

Subgroups were defined as low, moderate, and high according to the Short Physical Performance (SPPB) score. Correlations of the IMU-derived parameters were calculated using Spearman’s Rho test, subgroup comparison was performed using the Kruskal–Wallis test. ROM = Range of motion, ACC = angular component of coefficient of correspondence and SSD = square root of the sum of squared distances * Significant after Bonferroni correction.