Variable . | PC1 . | PC2 . | PC3 . |
---|---|---|---|
Strainforce onset to force max | –0.12 | –0.94 | 0.21 |
Strainforce max to force offset | –0.37 | 0.50 | 0.40 |
Strainswing | 0.39 | 0.79 | –0.35 |
Strainnet | –0.37 | –0.73 | 0.49 |
Forcemax | 0.93 | 0.04 | 0.32 |
Forcemean | 0.87 | –0.18 | 0.37 |
Forceduration | –0.73 | 0.47 | 0.33 |
Stressmax | 0.88 | 0.42 | 0.06 |
Stressmean | 0.94 | 0.16 | 0.15 |
EMGduration | –0.66 | 0.59 | 0.35 |
EMGonset relative to force onset | 0.39 | –0.54 | –0.06 |
MSA | 0.59 | 0.16 | 0.60 |
RIA | –0.27 | 0.23 | 0.65 |
Variable . | PC1 . | PC2 . | PC3 . |
---|---|---|---|
Strainforce onset to force max | –0.12 | –0.94 | 0.21 |
Strainforce max to force offset | –0.37 | 0.50 | 0.40 |
Strainswing | 0.39 | 0.79 | –0.35 |
Strainnet | –0.37 | –0.73 | 0.49 |
Forcemax | 0.93 | 0.04 | 0.32 |
Forcemean | 0.87 | –0.18 | 0.37 |
Forceduration | –0.73 | 0.47 | 0.33 |
Stressmax | 0.88 | 0.42 | 0.06 |
Stressmean | 0.94 | 0.16 | 0.15 |
EMGduration | –0.66 | 0.59 | 0.35 |
EMGonset relative to force onset | 0.39 | –0.54 | –0.06 |
MSA | 0.59 | 0.16 | 0.60 |
RIA | –0.27 | 0.23 | 0.65 |
PC1, PC2 and PC3 explained 40.4, 26.7 and 14.3% of the total variance,respectively
LG, lateral gastrocnemius; EMG, electromyogram; MSA, mean spike amplitude of the EMG burst; RIA, rectified integrated area of the EMG burst
Loadings >0.6 are in bold