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Table 2 CMC values for reproducibility of the scapular angles during shoulder flexion. The data is presented as mean ± standard deviation. Most measurement presented very good reproducibility (CMC > 0.75) with moderate reproducibility (CMC between 0.65 and 0.75) for interobserver agreement in scapular internal-external rotation

From: Evaluation of a novel portable three-dimensional scapular kinematics assessment system with inter and intraobserver reproducibility and normative data for healthy adults

FLEXION

Scapular internal/external rotation

Scapular upward/downward rotation

Scapular anterior/posterior tilt

“Same day”

intraobserver

0.74 ± 0.18

0.95 ± 0.05

0.92 ± 0.10

“Different day”

intraobserver

0.74 ± 0.21

0.94 ± 0.06

0.91 ± 0.09

Interobserver

0.68 ± 0.25

0.90 ± 0.09

0.89 ± 0.14