The primary objective of the study is to evaluate the impact of ACL injury and ACL reconstruction on voluntary activation during maximal voluntary contraction (measured by neurophysiological parameters) according to the contraction mode. The goal is to provide elements of knowledge to clinicians about the mechanisms of the activation failure depending on contraction mode, but also the resulting adapted clinical recommendations for conducting rehabilitation, and particularly for the use of different contraction modes. The main hypothesis is that activation failure is not equal according to the contraction mode during maximal voluntary contractions and neurophysiological parameters will be decreased in comparison with non-injured subjects. Secondary objectives are: * To analyze the evolution of neurophysiological parameters between sessions interspaced by several months according to the contraction mode. * To observe this time evolution depending on the treatment strategy chosen: rehabilitation or surgery plus rehabilitation.
Study Type
OBSERVATIONAL
Enrollment
60
Voluntary Activation Level
Time frame: Between 2 and 6 weeks after ACL rupture
Maximal voluntary torque
Time frame: between 2 to 6 weeks after ACL rupture
EMG activity of vastus lateralis, vastus medialis and rectus femoris
Quantified with root mean square (RMS), normalized to the maximal M-wave
Time frame: between 2 to 6 weeks after ACL rupture
Voluntary Activation Level
Time frame: Around 9 months after ACL rupture
Maximal voluntary torque
Time frame: Around 9 months after ACL rupture
EMG activity of vastus lateralis, vastus medialis and rectus femoris
Time frame: Around 9 months after ACL rupture
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.