Table 3. Pearson’s correlation coefficients between SPPB scores and variable factors.

	Pearson’s correlation
	Tandem	Chair stand	Gait	Total SPPB scores
Strength test
Handgrip	0.432 **	−0.527 **	−0.523 **	0.562 **
Knee extension	0.382 *	−0.717 **	−0.491 **	0.690 **
Morphological assessment
Fat free-mass	0.369 *	−0.386 *	−0.429 **	0.366 *
Mid-thigh girth	0.233	−0.548 **	−0.364 *	0.464 **
Lower-leg girth	0.264	−0.598 **	−0.409 *	0.436 **
Anterior mid-thigh MTH	0.463 **	−0.802 **	−0.569 **	0.759 **
Posterior mid-thigh MTH	0.488 **	−0.472 **	−0.465 **	0.563 **
Posterior lower-leg MTH	0.437 **	−0.670 **	−0.583 **	0.655 **

N=36. Data are given as mean (standard deviation). MTH: muscle thickness. **p<0.01, *p<0.05