Table 1. Characteristics of the participants.

Variable	Median	Interquartile range
Age (years)	86	82–88
Body Mass Index (kg/m2)	22.1	19.7–25.0
Timed Up and Go test (seconds)	9.6	8.2–11.2
Four Square Step Test (seconds)	9.9	8.4–12.3
Knee extension strength (kgf / kg)	0.24	0.20–0.34
Skeletal Muscle Mass Index (kg/m2)	6.8	6.5–7.7
Japanese version of Montreal Cognitive Assessment (point)	21	18–24
Toe flexion strength (kg)	4.7	3.2–6.9
Hallux valgus angle (deg)	11	7–18