Table 1 Final EMG-force relationship models
From: Neck Muscle EMG-Force Relationship and Its Reliability During Isometric Contractions
Anterior neck | Upper posterior neck | Lower posterior neck | ||||
|---|---|---|---|---|---|---|
Est | 95% CI | Est | 95% CI | Est | 95% CI | |
FE | ||||||
b 0 | 4.2 × 100 | 0.6 × 100, 7.8 × 100 | −1.7 × 100 | −4.3 × 100, 1.1 × 100 | 3.3 × 100 | 0.9 × 100, 5.7 × 100 |
b 1 | 1.0 × 100 | 0.9 × 100, 1.1 × 100 | 2.7 × 10−1 | 0.1 × 10−1, 4.2 × 10−1 | 3.6 × 10−1 | 2.3 × 10−1, 4.9 × 10−1 |
b 1 2 | – | – | 8.2 × 10−3 | 6.9 × 10−3, 9.5 × 10−3 | 6.8 × 10−3 | 5.7 × 10−3, 7.8 × 10−3 |
RE | ||||||
σ b0 | 7.4 × 100 | 4.6 × 100, 10.4 × 100 | 2.8 × 100 | 0.8e0, 4.5e0 | 3.3 × 100 | 1.6 × 100, 5.1 × 100 |
σ b1 | 2.0 × 10−1 | 1.3 × 10−1, 2.8 × 10−1 | 2.3 × 10−1 | 1.4 × 10−1, 3.1 × 10−1 | 1.8 × 10−1 | 1.2 × 10−1, 2.4 × 10−1 |
σε | 4.3 × 100 | 3.6 × 100, 5.1 × 100 | 4.6 × 100 | 4.1 × 100, 5.4 × 100 | 3.7 × 100 | 3.2 × 100, 4.3 × 100 |
R2Madj | 0.84 | 0.80, 0.85 | 0.89 | 0.87, 0.90 | 0.92 | 0.91, 0.93 |
R2Cadj | 0.98 | 0.97, 0.98 | 0.97 | 0.95, 0.97 | 0.98 | 0.97, 0.98 |