Hip Abduction and Adduction During Neurodynamic Stretching

Condition(s) studied

Investigational drug(s) / intervention(s)

Maximal neurodynamic flossing: Neurodynamic flossing was applied at pain threshold on hamstring muscles and repeated 5 times during 60s at the point of pain. During the neurodynamic conditions, head and ankle movement permitted to mobilize nerve tissues. Flossing is the alternation of these movements every 2 seconds.

Study summary

Neurodynamic mobilization techniques are widely applied in rehabilitation and physiotherapy to enhance the mobility and function of peripheral nerves. Two main approaches are distinguished : Nerve tensioning and nerve flossing. They both involve proximal and distal joint movements to induce greater neural sliding while avoiding excessive tensile stress. However, contradictory findings following neurodynamic stretching highlighted the current lack of consensus regarding the position that should be used. Moreover, neurodynamic techniques are of interest for patients, it appeared it could also be applied in healthy individuals and more particularly in athletes. Accordingly, the primary objective of the present study was to determine the immediate effect of two hip positions (adduction vs. abduction) during neurodynamic flossing techniques on the sciatic nerve and hamstring tissues using the shear wave elastography (SWE, a form of ultrasonography).

Eligibility

Primary outcome measure(s)

• Nerve shear wave velocity using elastography in neutral position — Before the intervention and at the end (immediately after) the intervention
  Shear wave velocity of the sciatic nerve will be evaluated by using an ultrasound (echography) device with a specific mode called "shear wave elastography". Briefly, the ultrasound probe will deliver an ultrasound wave. The propagation speed (called '"shear wave velocity") will be measured by the same probe. The greater the velocity is, the harder the tissue is. The hip position was neutral (alignment between the lower limb and the trunk).

Trial sites (1)

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