Fig 1.
Illustration of the experimental protocol.
MVC: maximal voluntary contraction; 1 arrow: single electrical stimulus; 2 arrows: doublet stimulation (10 ms between 2 electrical stimuli); condition: with vibration or without vibration; dotted line: rest period.
Fig 2.
Illustration of experimental setup used during neuromuscular assessment and fatiguing exercise for the experimental session in which the individuals were tested at 150° knee angle.
VL: Vastus Lateralis; VM: Vastus Medialis.
Table 1.
Mechanical and electrophysiological measurements according to angle, vibration condition and time.
Fig 3.
Effect of knee angle and fatiguing exercise on neuromuscular characteristics.
A represents the effect of knee angle and fatiguing exercise on MVC force. B represents the effect of knee angle and fatiguing exercise on voluntary activation level, C represents the effect of knee angle and fatiguing exercise on potentiated doublet force. Note that this figure represents the significant interaction between angle and time, i.e. the conditions with vibration and without vibration are pooled. MVC: Maximal voluntary contraction; VAL: Voluntary activation level. * P <0.05, **P<0.01, ***P<0.001.