Table 4. Associations between changes in SARC-F sum score or individual item responses and change in objective measures of muscle function across intervention.

	Isometric strength	Handgrip Strength	Walking speed	Chair-stand test
SARC-F Total Score (r)	0.01 (−0.14 to 0.16)	−0.03 (−0.18 to −0.12)	−0.30 (−0.43 to −0.15)‡	0.33 (0.18–0.45)‡
SARC-F Slowness (RR)	0.76 (0.46–1.3)	0.95 (0.57–1.6)	0.63 (0.37–1.1)	2.2 (1.2–4.1)‡
SARC-F Walking (RR)	1.19 (0.91–3.9)	1.12 (0.57–2.5)	0.36 (0.15–0.86)*	2.0 (1.0–3.4)*
SARC-F Chair (RR)	1.32 (0.76–2.3)	0.82 (0.46–1.5)	0.47 (0.24–0.92)*	2.1 (1.2–3.8)
SARC-F Stairs (RR)	0.83 (0.48–1.4)	0.57 (0.32–1.0)	0.40 (0.21–0.76)†	2.0 (1.1–3.5)*
SARC-F Falls (RR)	0.92 (0.51–1.7)	1.13 (0.73–2.4)	0.94 (0.52–1.7)	1.11 (0.60–2.0)

Notes.

AR²

Adjusted R²

RR

Relative risk ratio moving from positive to negative change in SARC-F item response for a one standard deviation increase in objective measure change

^*p < 0.05.

^†p < 0.01.

^‡p < 0.001.