The Effects of Gait Retraining in Runners With Patellofemoral Pain

Running popularity has increased resulting in a concomitant increase in running-related injuries. Of these injuries, patellofemoral pain (PFP) is the most commonly reported. PURPOSE: The purpose of this study is to determine whether gait retraining by modifying footstrike patterns from rearfoot strike (RFS) to forefoot strike (FFS) reduces PFP and improves associated biomechanical measures, and whether the modification results in increased risk of ankle injuries. METHODS: Sixteen subjects (n=16) received clearance to participate by a licensed physical therapist, and were randomly placed in the control (n=8) or experimental (n=8) group. Subsequently, the experimental group (EXP) performed eight gait retraining running sessions where footstrike pattern was switched from RFS to FFS, while the control group (CTL) performed eight running sessions with no intervention. Knee flexion (Kflex), knee valgus (Kvalg), and ankle flexion (Aflex) at initial contact, knee (KL) and ankle loading (AL), patellofemoral contact force (PFCF), patellofemoral stress (PFS), Achilles tendon force (ATF), and knee pain as reported on a visual analog scale (VAS) were recorded pre-, post-, and one-month post-running trials. RESULTS: In Exp, knee pain was significantly reduced post-retraining (mean Δ, -4.225; p<0.05) and at one-month follow-up (mean Δ, -4.276; p<0.05). Kflex was significantly increased post-retraining (mean Δ, 6.044°; p<0.05). Kvalg was significantly improved post-retraining (mean Δ, 2.782°; p<0.05) at one-month follow-up (mean Δ, 4.066°; p<0.05). Aflex was significantly different post-retraining (mean Δ, -23.958°; p<0.05), as well as AL post-retraining (mean Δ, 14.738°; p<0.05) and one-month follow-up (mean Δ, 17.192°; p<0.05). PFCF, PFS, ATF, and KL were not significantly different. CONCLUSION: Retraining from RFS to FFS results in significant reductions in knee pain in runners with PFP without increasing risk of ankle injuries.'

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Health, Exercise, and Sports Sciences

Year dc:date.available

2015

Author dc:creator

• Roper, Jenevieve

Contributors dc:contributor

• Mermier, Christine
• Kravitz, Len
• Dufek, Janet
• Dexter, James

• injury
• knee
• lower extremity
• running
• Health and Physical Education

Language dc:language

English

Identifier

https://digitalrepository.unm.edu/educ_hess_etds/42

OAI identifier oai:identifier

oai:digitalrepository.unm.edu:educ_hess_etds-1041