Table 10 Per-joint/activity validity metrics vs. optical motion capture and force plates.
Joint & angle | Activity | RMSE (°/N) | Bias (°/N) | 95% LoA (°/N) | R² |
|---|---|---|---|---|---|
Knee flexion | Running | 3.1° | + 1.2° | − 4.8° to + 7.2° | 0.97 |
Knee flexion | Jumping | 4.5° | − 0.8° | − 9.1° to + 7.5° | 0.93 |
Hip flexion | Squatting | 5.2° | + 2.1° | − 6.5° to + 10.7° | 0.91 |
Ankle dorsiflexion | Running | 2.7° | − 0.5° | − 4.3° to + 5.1° | 0.95 |
Ground reaction force | Jumping | 18.5 N | − 3.2 N | − 38.4 to + 32.0 N | 0.94 |
