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Table 2 EMG amplitude at 50% of training time (EMG50) in the WBV training under different conditions

From: The neuromuscular responses in patients with Parkinson’s disease under different conditions during whole-body vibration training

   Rectus femoris (% MVC) Hamstring (% MVC) Tibialis anterior (% MVC) Gastrocnemius (% MVC)
   mean ± SD p-value mean ± SD p-value mean ± SD p-value mean ± SD p-value
Group Control 10.59 ± 16.06 0.137 4.11 ± 2.98 0.040* 4.07 ± 2.95 0.001* 21.03 ± 18.46 0.004*
Parkinson 13.41 ± 18.53 8.70 ± 10.29 5.67 ± 5.47 31.71 ± 28.86
Knee
position
Straight 9.51 ± 15.94 0.001* 7.02 ± 8.45 0.042* 4.62 ± 5.30 0.084 27.75 ± 24.94 0.058
Bended 14.49 ± 18.40 5.78 ± 7.29 5.12 ± 3.43 25.00 ± 24.61
Vibration frequency 0 Hz 6.33 ± 5.08 < 0.001* 5.80 ± 7.32 0.813 3.44 ± 1.78 0.023* 15.23 ± 10.28 < 0.001*
3 Hz 20.29 ± 26.09 6.44 ± 5.71 4.72 ± 3.35 21.26 ± 14.68
20 Hz 9.38 ± 9.83 6.97 ± 10.11 6.44 ± 6.42 42.62 ± 33.39
  1. *: p < 0.05