Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21344
Title: Biofeedback supplementation to physiotherapy exercise programme for rehabilitation of patellofemoral pain syndrome : a randomized controlled pilot study
Authors: Yip, SLM
Ng, GYF 
Issue Date: 2006
Publisher: SAGE Publications
Source: Clinical rehabilitation, 2006, v. 20, no. 12, p. 1050-1057 How to cite?
Journal: Clinical rehabilitation 
Abstract: Objectives: To examine the efficacy of electromyographic (EMG) biofeedback supplementation to exercise rehabilitation for people with patellofemoral pain syndrome. Design: Double-blinded randomized clinical controlled pilot trial. Setting: Clinical setting with home programme. Participants: Twenty-six subjects diagnosed with patellofemoral pain. Intervention: Subjects were randomly assigned into EMG biofeedback + exercise group or exercise-only group. All subjects participated in an eight-week home exercise programme, while the biofeedback group also received EMG visual feedback of their quadriceps muscle activities during the exercises. Main outcome measures: Isokinetic knee extension strength, patellar alignments and perceived pain severity were assessed in weeks 0, 4 and 8 for all subjects. The data within and between groups were compared by repeated measures ANOVA with α = 0.05. Results: Both groups improved in isokinetic peak torque (P= 0.005), work output (P= 0.037) and patellar alignments (P= 0.001-0.014). Besides, there was a trend of decrease in pain (P = 0.088). The biofeedback group improved faster than the exercise group in lateral patellar rotation and peak torque per body weight, although no statistically significant difference was shown. Conclusion: Biofeedback supplement to the exercise programme might hasten the improvement for subjects with patellofemoral pain in the first few weeks of a physiotherapy exercise programme, but this needs further study before being used.
URI: http://hdl.handle.net/10397/21344
ISSN: 0269-2155
EISSN: 1477-0873
DOI: 10.1177/0269215506071259
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