Rehabilitation of people with patellofemoral pain syndrome using a weight training programme

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Rehabilitation of people with patellofemoral pain syndrome using a weight training programme

 

Author: Chiu, Kam Wah
Title: Rehabilitation of people with patellofemoral pain syndrome using a weight training programme
Degree: D.H.Sc.
Year: 2011
Subject: Patellofemoral joint -- Diseases -- Patients -- Rehabilitation.
Hong Kong Polytechnic University -- Dissertations
Department: Faculty of Health and Social Sciences
Pages: xiii, 118 leaves : ill. (some col.) ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2551432
URI: http://theses.lib.polyu.edu.hk/handle/200/6839
Abstract: Patellar malalignment is a major cause of patellofemoral pain syndrome or PFPS. However, when this study was conducted there was no consensus as yet on the relationship between clinical symptoms of patellofemoral pain and changes in patellar position and knee muscle strength. This study was designed to measure the effect of weight training on hip and knee muscle strength, the effect of weight training on the relative onset time of vastii and gluteal muscles that have direct or indirect biomechanical influence on the patellofemoral joint alignment and the patellofemoral joint contact area on subjects with and without PFPS. The study recruited 12 able-bodied subjects and nine subjects with PFPS. Subjects with PFPS were assigned to the PFPS group and performed lower limb weight training three times a week for eight weeks. Six of the able-bodied subjects were randomly assigned to the weight training group, which followed the same exercise programme as the PFPS group; and six were randomly assigned to the control group, which did not receive any weight training. All subjects were evaluated prior to and after the eight-week lower limb weight training programme using isokinetic dynamometer to measure the hip and knee strength, using surface electromyography to measure the difference in relative onset time of the vastii and gluteal muscles acting on the patellofemoral joint, and magnetic resonance imaging to measure the patellofemoral joint contact area. Additionally, subjects with PFPS were also examined with a numeric pain rating score and Kujala patellofemoral score. Results showed that subjects with PFPS recorded increased patellofemoral joint contact area after the weight training programme (p<0.001). They showed increased isometric hip and knee strength and isokinetic knee strength (p ranged from 0.007 to 0.05); so did the normal group which received weight training. Subjects with PFPS also improved on the numeric pain rating scale and Kujala patellofemoral score after training (p<0.001). No significant difference was found in the relative onset time among the vastus medialis obliquus, vastus lateralis and gluteus medius. In conclusion, weight training exercise can increase the patellofemoral joint contact area, thereby reducing mechanical stress in the joint and improving pain, function and muscle strength in subjects with PFPS. However, this study found that this muscle training programme did not result in significant changes in the relative onset time of the hip and knee muscles acting on the patellofemoral joint.

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