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Table 1 Mean±SD data of the sEMG (mv) and muscle thickness (mm) and pennation angle (°) during levels of intensity

From: Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players

  Rest 25% 50% 75% 100%
Vastus lateralis      
Average ± SD (mv) 0.003 ± 0.002 0.062 ± 0.028 0.152 ± 0.061 0.266 ± 0.122 0.390 ± 0.151
Average ± SD (°) 15.1 ± 3.81 15.7 ± 3.77 17.6 ± 4.06 18.8 ± 4.52 20.7 ± 4.44
Rectus femoris      
Average ± SD (mv) 0.008 ±0.008 0.052 ± 0.020 0.149 ± 0.0658 0.293 ± 0.124 0.431 ± 0.185
Average ± SD (mm) 28.8 ± 3.28 32.2 ± 3.97 33.3 ± 4.21 33.4 ± 4.04 33.9 ± 4.3