Local Vibration of the Hamstrings Induces Changes in Cortical and Spinal Excitability to the Antagonist Quadriceps following ACL Reconstruction

The increase in voluntary activation of the quadriceps following prolonged vibration of the hamstrings is due to an increase in quadriceps spinal excitability. Furthermore, prolonged vibration of the hamstrings increases cortical and spinal excitability of neural pathways to the quadriceps for at least an hour following cessation of the vibration. Understanding these mechanisms will enable clinicians to optimize this technique and enhance rehabilitation outcomes.