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. 2022 Oct 30;8:30. doi: 10.21037/mhealth-22-7

Figure 5.

Figure 5

Regression and Bland-Altman analyses comparing shoulder joint angle measurements between inertial measurement unit (IMU) and optical motion capture (OMC) systems. Regression analysis describing the correlation of measurements for shoulder joint angles between IMU and OMC systems for flexion (A), extension (C), external rotation (E), and abduction (G). Bland-Altman plots demonstrating the difference for joint angles between IMU and OMC system for flexion (B), extension (D), external rotation (F) and abduction (H). The dashed red lines represent the 95% limits of agreement corresponding to 2 standard deviations of the mean difference.