Table 1.

GRADE assessment of evidence quality

Outcome	No. of Studies	Study Design	Relative Effect	Confidence Interval	Risk of Bias	Inconsistency	Indirectness	Imprecision	Quality of Evidence
5 x time sit-to-stand	5	RCTs	-0.18	[-0.36, 0.00]	Moderate	Not serious (I²=0%)	Not serious	Very serious	⊕⊕◯◯ Low
Knee extension strength	2	RCTs	0.21	[-0.60, 1.03]	Moderate	Very serious (I²=71%)	Not serious	Very serious	⊕◯◯◯ Very low
10 m walking speed	4	RCTs	0.18	[-0.10, 0.46]	Moderate	Not serious (I²=30%)	Not serious	Serious	⊕⊕⊕◯ Moderate
TUG	2	RCTs	-0.08	[-0.32, 0.17]	Moderate	Not serious (I²=0%)	Not serious	Serious	⊕⊕⊕◯ Moderate
SPPB	3	RCTs	1.14	[-1.09, 3.37]	Moderate	Very serious (I²=98%)	Not serious	Very serious	⊕◯◯◯ Very low

RCT = Randomised controlled trial; TUG = Timed up and go test; SPPB = Short Physical Performance Battery