Table 2.
Mean (SD) of the dominant (right) upper arm elevation estimates by measurement method.
| Summary measure | OMC_Global | Accel-1 | Comp-1 | OMC_Torso | ART |
|---|---|---|---|---|---|
| Mean (°) | 13.5 (7.0) | 13.4 (7.4) | 13.2 (7.8) | 20.7 (9.9) | 21.3 (11.5) |
| Maximum elevation (°) | 50.0 (7.9) | 51.5 (8.6) | 46.1 (10.0) | 67.8 (11.9) | 65.2 (17.8) |
| 10th percentile (°)a | −0.8 (2.1) | −0.9 (2.0) | 0.1 (2.7) | 0.0 (1.9) | 2.3 (3.9) |
| 50th percentile (°) | 8.4 (10.7) | 8.6 (10.6) | 10.0 (10.6) | 15.3 (17.3) | 18.2 (17.4) |
| 90th percentile (°) | 35.9 (8.8) | 35.2 (10.8) | 31.6 (10.6) | 49.2 (12.7) | 44.0 (14.4) |
| 99th percentile (°) | 45.1 (7.5) | 44.4 (9.2) | 40.0 (9.7) | 59.9 (12.0) | 55.5 (16.1) |
| Sample-to-sample RMSD (°) | -- Ref -- | 7.2 (2.9) | 8.5 (2.4) | -- Ref -- | 12.1 (3.2) |
Notes: OMC_Global = Low passed (zero-phase, 4th-order Butterworth, 10 Hz cut-off) OMC-based estimate relative to the global coordinate system; Accel-1 = Low passed (zero-phase, 2nd-order Butterworth, 3 Hz cut-off) accelerometer-based estimate from the IMU secured to the sternum only; Comp-1 = Complementary weighting algorithm-based estimate using accelerometer and gyroscope measurements from the IMU secured to the sternum only; OMC_Torso = Low passed (zero-phase, 4th-order Butterworth, 10 Hz cut-off) OMC-based estimate relative to the torso; ART = a complementary weighting algorithm-based estimate calculated as the difference of complementary-based estimates from the IMUs secured to the sternum and upper arm (shoulder relative to the torso).
Negative values denote extension behind the body.