Format

Send to:

Choose Destination
See comment in PubMed Commons below
Med Sci Sports Exerc. 2002 Dec;34(12):1879-85.

Physical therapy alters recruitment of the vasti in patellofemoral pain syndrome.

Author information

  • 1Centre for Sports Medicine Research and Education, School of Physiotherapy, The University of Melbourne, 200 Berkeley St, Carlton, Vic, 3010, Australia. s.cowan@unimelb.edu.au

Abstract

PURPOSE:

To investigate the effect of physical therapy treatment on the timing of electromyographic (EMG) activity of the vasti in individuals with patellofemoral pain syndrome (PFPS).

METHODS:

Sixty-five (42 female, 23 male) participants aged 40 yr or less (29.2 +/- 7.8 yr) diagnosed with PFPS. Participants were randomly allocated into physical therapy treatment (McConnell-based) or placebo groups. Treatment programs were standardized and consisted of six-treatment sessions over 6 wk. Vastus medialis oblique (VMO) and vastus lateralis (VL) EMG activity was recorded with surface electrodes during a stair-stepping task and onsets of EMG activity were measured pre- and post-treatment.

RESULTS:

Before treatment, the EMG onset of VL occurred before that of VMO in both participant groups. After physical therapy intervention, there was a reduction in symptoms, and this improvement was associated with a significant change in the time of onset of VMO EMG compared with that of VL in both phases of the stair-stepping task. After physical therapy treatment, the onset of VMO preceded VL in the eccentric phase and occurred at the same time in the concentric phase of the stair-stepping task. There was no change in time of EMG onset in the placebo group.

CONCLUSION:

This study demonstrates that a "McConnell"-based physical therapy treatment regime for PFPS alters the motor control of VMO relative to VL in a functional task and this is associated with a positive clinical outcome.

PMID:
12471291
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Lippincott Williams & Wilkins
    Loading ...
    Write to the Help Desk