Medicine & Science in Sports & Exercise:
B-16 Thematic Poster - Neuromuscular Retraining: JUNE 1, 2011 1:00 PM - 3:00 PM: ROOM: 304
Willy, Richard; Davis, Irene S. FACSM
1University of Delaware, Newark, DE. 2Harvard Medical School, Boston, MA.
(No relationships reported)
Gait retraining, using mirror feedback, has been shown to reduce abnormal hip kinematics in runners with patellofemoral pain syndrome (PFPS). However, it is unknown whether hip kinetics are changed, and whether any of these improvements persist beyond the end of the training.
PURPOSE: To compare hip mechanics at baseline (PRE), post-gait retraining (POST), and at 3 months post gait retraining (3MO) in female runners with PFPS. We predicted that reductions in peak hip adduction (HADD) and hip internal rotation (HIR) would be associated with reductions in peak hip abduction moment (HABDM) and hip internal rotation moment (HIRM). In addition, we expected that improvements in hip mechanics and pain would persist at 3 mos.
METHODS: To date, 5 female subjects (age 20.6 yrs, running 15.2 mpw) with PFPS and increased HADD during running have completed the study. Subjects were provided 8 sessions of mirror feedback on their alignment during treadmill running, and asked to reduce their HADD. Mirror feedback was progressively removed. Hip mechanics and pain were assessed at baseline (PRE), following training (POST) and at 3 months post (3 MO).
RESULTS: Due to the improvement in hip alignment following retraining, HABDM and HIRM were also reduced, suggesting reduced demand on the hip musculature. Changes in HADD, HABDM, HIRM and pain were maintained at 3MO. While HIR was not changed initially, it was reduced at 3MO, indicating further improvement following the follow-up period.
CONCLUSIONS: These preliminary data suggest that gait retraining using simple mirror feedback, has longterm efficacy of reducing pain and improving abnormal hip mechanics associated with PFPS.
Support: DOD W911NF-05-1-0097 & NIH 1 S10 RR022396, Foundation for Physical Therapy