Khosro K Kalantari, Ronald H Baxendale.
The gain modulation of the heteronymous excitation of quadriceps with changes in position of the knee and hip joints in humans.
Pak J Med Sci Jan ;23(5):805-8.

Objective: A potent heteronymous excitation of quadriceps motoneurones via common peroneal group I and II afferents has been demonstrated in normal subjects. The aim of this study was to establish the contribution of knee and hip proprioceptors on the modulation of this biphasic facilitation. Methodology: Single 0.2ms pulses were delivered to common peroneal nerve at the intensity of 2xmotor threshold in tibialis anterior. The peak to peak amplitude and area of the excitatory responses were measured in ongoing EMG of voluntarily contracted rectus femoris at different knee and hip joint positions. Results: The reflex showed a significant inhibition with the knee flexion (P < 0.0001) and hip extension (P < 0.01). Conclusion: It was concluded that coordinate activation of ankle flexors and knee extensors could modulated by the knee and hip joints proprioceptors.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com