The effects of the Mulligan Sustained Natural Apophyseal Glide (SNAG) mobilisation in the lumbar flexion range of asymptomatic subjects as measured by the Zebris CMS20 3-D motion analysis system

Table 5 Reliability values and paired sample t tests for intra-day and inter-day measurements.

Measurement	ICC_(1,1)	SEM	SDD	95% CI (Lower-Upper)	p value (t test)	Mean
Intra-day (measured on Day 1)	0.89	3.3°	13.8%	0.79 – 0.95	0.60	67.4°
Intra-day (measured on Day 8)	0.90	3.0°	12.1%	0.77 – 0.96	0.35	68.5°
Inter-day (between the different days' measurements)	0.82	4.0°	16.3%	0.61 – 0.92	0.28	68.3°

ICC: intraclass correlation coefficient; SEM: standard error of measurement; SDD: smallest detectable difference (expressed as percentage of grand mean).

ISSN: 1471-2474