Table 3. Correlation between outcomes of strength measurement and synergy weights determined with Spearman’s rank correlation coefficients (ρ) in DMD.
| GLU | REF | MEH | TIA | GAS | |
|---|---|---|---|---|---|
| Synergy one | |||||
| KE MVIC [Nm·kg-1] | -0.11 | -0.26 | 0.08 | 0.03 | -0.10 |
| KF MVIC [Nm·kg-1] | 0.08 | -0.17 | -0.24 | 0.03 | 0.10 |
| DF MVIC [Nm·kg-1] | -0.32 | -0.15 | 0.29 | -0.14 | 0.23 |
| PF MVIC[Nm·kg-1] | 0.22 | -0.11 | -0.36 | 0.09 | -0.25 |
| Synergy two | |||||
| KE MVIC [Nm·kg-1] | -0.30 | -0.03 | 0.20 | -0.16 | 0.06 |
| KF MVIC [Nm·kg-1] | -0.17 | 0.07 | 0.12 | 0.22 | -0.03 |
| DF MVIC [Nm·kg-1] | 0.17 | -0.33 | -0.40 | 0.11 | 0.19 |
| PF MVIC [Nm·kg-1] | -0.04 | 0.02 | 0.35 | 0.18 | -0.30 |
| Synergy three | |||||
| KE MVIC [Nm·kg-1] | 0.20 | 0.10 | -0.11 | -0.22 | 0.06 |
| KF MVIC [Nm·kg-1] | -0.05 | 0.08 | 0.19 | -0.21 | 0.23 |
| DF MVIC [Nm·kg-1] | 0.08 | 0.23 | -0.16 | 0.00 | -0.07 |
| PF MVIC [Nm·kg-1] | -0.13 | 0.24 | 0.06 | -0.10 | 0.13 |
Moderate to good correlations are in bold.
Abbreviations in alphabetic order: DF = dorsiflexion; DMD = Duchenne muscular dystrophy; GAS = gastrocnemius; GLU = gluteus medius; KE = knee extension; KF = knee flexion; MEH = medial hamstrings; MVIC = maximal voluntary isometric contraction; Nm·kg-1 = Newton meters per kilogram body weight; PF = plantar flexion; REF = rectus femoris; TIA = tibialis anterior.
*p < 0.01
**p < 0.001