Table 5 Inter- and intra-rater reliability (Intra-class correlation coefficients, ICC) with 95% confidence interval (CI) and Cronbach’s alpha of thoracic spine posture and mobility measurements

Posture inspection while standing^a

(−0.55–0.67)

(0.56–0.89)

Posture inspection while sitting^a

(−0.58–0.62)

(0.73–0.94)

Segmental mobility into flexion^b

(−1.20–0.48)

(0.56–0.90)

Segmental mobility into extension^b

(−1.84–0.33)

(0.59–0.90)

Posterior to anterior pressure^b

(−1.39–0.43)

(0.37–0.85)

Inclination of Th1–6 while standing (°)

(0.60–0.91)

(0.72–0.93)

Inclination of Th6–12 while standing (°)

(0.37–0.85)

(0.39–0.85)

Inclination of Th1–12 while standing (°)

(0.64–0.91)

(0.66–0.92)

Inclination of Th1–6 while sitting (°)

(0.67–0.93)

(0.67–0.92)

Inclination of Th6–12 while sitting (°)

(0.18–0.80)

(0.60–0.90)

Inclination of Th1–12 while sitting (°)

(0.37–0.85)

(0.47–0.87)

C7-Th5 flexion mobility (tape, mm)

(− 0.37–0.63)

(0.30–0.83)

Schober (spine in neutral, mm)

(0.47–0.87)

(0.72–0.93)

Schober (spine in flexion, mm)

(0.48–0.87)

(0.43–0.86)

Schober (spine in extensio, mm)

(−0.48–0.66)

(− 0.42–0.66)

Flexion mobility of Th1–6 while sitting (°)

(−0.67–0.60)

(0.26–0.82)

Flexion mobility of Th6–12 while sitting (°)

(0.02–0.77)

(−0.05–0.75)

Flexion mobility of Th1–12 while sitting (°)

(−0.06–0.75)

(0.32–0.84)

Extension mobility of Th1–6 while sitting (°)

(0.20–0.81)

(−0.33–0.68)

Extension mobility of Th6–12 while sitting (°)

(0.15–0.80)

(−0.43–0.66)

Extension mobility of Th1–12 while sitting (°)

(0.22–0.81)

(−0.10–0.74)