. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: J Geriatr Phys Ther. 2015 Jan-Mar;38(1):33–39. doi: 10.1519/JPT.0000000000000021

TABLE 3.

Between-Days Procedural Reliability

Older Adults with CLBP (n=30)	Intra-Examiner						Inter-Examiner
	Examiner 1			Examiner 2			Inter-Examiner

	ICC (95% CI)	SEM	MDC	ICC (95% CI)	SEM	MDC	ICC (95% CI)	SEM	MDC
LM thickness at rest (cm)^a	0.92 (0.84, 0.96)	0.23	0.64	0.92 (0.83, 0.96)	0.25	0.70	0.78 (0.55, 0.89)	0.41	1.13
LM thickness contracted (cm)^a	0.91 (0.82, 0.96)	0.24	0.66	0.90 (0.78, 0.95)	0.30	0.82	0.72 (0.43, 0.86)	0.46	1.26
LM thickness at rest ALT (cm)^a	0.93 (0.87, 0.97)	0.21	0.60	0.93 (0.85, 0.96)	0.24	0.67	0.79 (0.55, 0.90)	0.41	1.13
LM thickness contracted ALT (cm)^a	0.92 (0.84, 0.96)	0.23	0.64	0.90 (0.80, 0.95)	0.27	0.74	0.76 (0.51, 0.88)	0.42	1.18

Abbreviations: CLBP, chronic low back pain; ICC, intraclass correlation coefficient; CI, confidence interval; SEM, standard error of measurement; MDC, minimal detectable change; LM, lumbar multifidus; cm, centimeters; ALT, alternative.

Measurements are provided for the left L4/5 multifidi.