Table 1.

Test–retest reliability of standard and modified assessment protocols for timed-up-and-go, five-repetition sit-to-stand, handgrip strength, two-minute walk, and 30-second sit-to-stand physical assessments.

Physical assessment measure	Published reliability of the standard protocol (ICC)	ICC trial 1 to trial 3 on the first occasion of assessment (Cronbach’s α)a	Participants able to complete modified protocol (%)	Test–retest reliability (Pearson’s)	Coefficient of variation (%)
Timed-up-and-go2	0.98	0.91	64	0.87	11.9
Five-repetition sit-to-stand3	0.81	0.95	64	0.75	12.7
Handgrip strength2	0.98	0.98	100	0.94	9.8
Two-minute walk8	0.98	b	64	0.87	b
Four-metre walk14	0.96	0.84	64	0.83	7.2
30-second sit-to-stand2	0.92	0.77	64	0.93	14.8

ICC: intraclass correlation coefficient.

^aICCs were calculated from the three measures collected on the first test occasion.

^bThe two-minute walk was completed once on each measurement occasion and does not have an ICC or coefficient of variation value.