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A Journal on Physical Medicine and Rehabilitation after Pathological Events

Official Journal of the Italian Society of Physical and Rehabilitation Medicine (SIMFER), European Society of Physical and Rehabilitation Medicine (ESPRM), European Union of Medical Specialists - Physical and Rehabilitation Medicine Section (UEMS-PRM), Mediterranean Forum of Physical and Rehabilitation Medicine (MFPRM), Hellenic Society of Physical and Rehabilitation Medicine (EEFIAP)
In association with International Society of Physical and Rehabilitation Medicine (ISPRM)
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Europa Medicophysica 2003 March;39(1):19-25

language: English

Mechanical vibration in the rehabilitation of patients with reconstructed anterior cruciate ligament

Salvarani A. 1, Agosti M. 1, Zanrè A. 1, Ampollini A. 2, Montagna L. 3, Franceschini M. 1

1 Rehabilitation Department Parma Hospital, Parma, Italy
2 Casa di Cura “Città di Parma”, Parma, Italy
3 Centro Parmense Riabilitativo, Parma, Italy


Aim. More ­and ­more, mechan­i­cal vibra­tion exer­cise is ­being ­used in ­both ­sports train­ing ­and reha­bil­i­ta­tion ther­a­py. Many stud­ies ­have report­ed an ­increase in ­the mus­cle per­for­mance of sub­jects ­after ­whole-­body vibra­tion, ­but so ­far ­none ­have eval­u­at­ed ­the pos­sibil­ity to ­improve ­the recov­ery of mus­cle ­strength ­after ante­ri­or cru­ciate lig­a­ment recon­struc­tion. The con­tra­in­di­ca­tions to ­this ­type of treat­ment ­are relat­ed to ­the admin­is­tra­tion of high­er vibra­tion fre­quen­cy ­for peri­ods ­much long­er ­than ­those fore­seen by ­our pro­to­col. However, numer­ous stud­ies ­have ­found ­this treat­ment ­can ­offer ­the ben­e­fit of ­reduced fre­quen­cy ­and inten­sity of ­the elec­tro­myo­graph­ic trac­ing, accom­pa­nied by an ­increase in mus­cle ­strenght sim­i­lar to ­that ­obtained ­after ­strength train­ing ­with over­load. Hormonal ­response ­was ­also ­seen to dif­fer ­from ­that ­after ­strength train­ing ­with over­load ­because of a ­major ­increase in ­blood con­cen­tra­tions of ­growth hor­mone ­and a reduc­tion of cor­ti­sol. The ­aim of ­our ­study ­was to eval­u­ate ­the use­ful­ness of mechan­i­cal vibra­tion in ­the reha­bil­i­ta­tion of ­patients ­who ­received recon­struc­tion of ­the ante­ri­or cru­ciate lig­a­ment.
Methods. In ­this ­study 20 sub­jects ­were ­enrolled ­and ran­dom­ly divid­ed ­into 2 ­groups (10 ­patients ­and 10 con­trol sub­jects). The sub­jects ­received 5 dai­ly admin­is­tra­tions of ­whole-­body vibra­tion (30 Hz fre­quen­cy ­for 1 min­ute) ­over a 2-­week peri­od. Muscle ­force dur­ing exten­sion of ­both low­er ­limbs ­was eval­u­at­ed by iso­met­ric con­trac­tion ­for 5 sec­onds.
Results. Different ­results ­were ­obtained: ­the treat­ment ­group ­showed a ­mean ­increase in mus­cle ­strength ­and in ­mean ­force ­peaks, ­both sta­tis­ti­cal­ly sig­nif­i­cant (p<0.001), com­pared ­with ­the con­trol ­group (p<0.005).
Conclusion. The ben­e­fits ­this treat­ment ­affords, com­pris­ing rap­id admin­is­tra­tion ­time ­and ­ease of appli­ca­tion, indi­cate ­that it ­can be use­ful in ­the reha­bil­i­ta­tion of sub­jects ­who ­receive recon­struc­tion of ­the ante­ri­or cru­ciate lig­a­ment.

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