Table 2.

ICC, 95% CI, and SEM of PPT values at each measurement point at the beginning of the study and after 6 months observation

Parameter	ICC	95% CI	SEM (kg/cm2)
PPT-deltoid muscle (beginning of the study)	0.990	0.983–0.994	0.254
PPT-trapezius muscle (beginning of the study)	0.998	0.997–0.999	0.186
PPT-deltoid muscle (after 6 months)	0.990	0.983–0.994	0.188
PPT-trapezius muscle (after 6 months)	0.997	0.999–0.998	0.213

Abbreviations: ICC, intraclass correlation coefficient; CI, confidence interval; SEM, standard error of measurement; PPT, pressure pain threshold.