Acute Effects of a Passive Stretching Session on the Mechanical Properties of Medial Gastrocnemius Muscle in Children With Cerebral Palsy

measurement of the maximum dorsiflexion angle in degrees evaluated on an isokinetic dynamometer

"* simultaneous recording of force torque, joint angle and myotendinous junction displacement in 2D ultrasound during 5 passive mobilization cycles of ankle flexion-extension at very low speed~* recording of static images in 2D ultrasound representing the proximal insertion of the gastrocnemius muscle in the internal condyle of the femur, the myotendinous junction."

visual analogue scale (0 = no discomfort and 10 = maximal discomfort)