Abstract
Introduction: Patellofemoral pain syndrome is one of the most prevalent problems in physically active people. The syndrome is a multifactorial disorder with different therapeutic approaches. Conservative treatment of the syndrome has been a crucial matter in different studies. Quadriceps muscle strengthening exercise is a recommended approach which is performed in forms of open and closed kinetic chain exercises. This study was designed to compare the efficacy of these exercises on this syndrome. Methods: Totally 30 women suffering from the syndrome aged 30-40 were randomly allocated into three groups: open, and closed kinetic chain exercises, and control group, as groups A, B, and C, respectively. Groups A and B participated in 28 sessions of exercises in a period of four weeks and group C did not do any exercise in this period. Before and after the period, pain and function of the participants were assessed using visual analog scale (VAS) and Kujala patellofemoral scale, respectively. Data were analyzed using independent t test, dependent t test, and univariate variance analysis, while significance of data was determined at P < 0.05. Results: The study indicated that open kinetic chain exercises (group A) for 4 weeks brought significant changes in relieving the pain along with improving the function (P = 0.001). Likewise, it was revealed a significant pain relief as well as function improvement in group B (P = 0.001). Comparing two groups illustrated that benefits of open kinetic chain exercises outweigh closed ones (P = 0.001). Conclusion: Overall, both exercises were efficient in relieving pain as well as improving function, however open kinetic chain exercises were more contributory.
Highlights
Patellofemoral pain syndrome is one of the most prevalent problems in physically active people
The study indicated that open kinetic chain exercises for 4 weeks brought significant changes in relieving the pain along with improving the function (P = 0.001)
Comparing the effect of open and closed kinetic chain exercises in Conclusion: Overall, both exercises were efficient in relieving pain as well as improving function, open kinetic chain exercises were more contributory
Summary
Patellofemoral pain syndrome is one of the most prevalent problems in physically active people. In open chain exercises, end of the extremity is not fixed and there is no weight bearing exercise.[19] Witvrouw et al illustrated that there is no significant differences between two approaches They concluded that both exercises are effective in muscle function improvement as well as pain alleviation,[20] Collins et al recommended closed kinetic chain exercises for just short-term periods.[10] Considering the fact that there is no consensus about the best and most effective exercises for treatment of patellofemoral pain syndrome, and high prevalence of the disease in our community, this study aimed to compare two methods of kinetic chain exercises-open and closedregarding their efficacy in alleviating pain and improving joint function in this syndrome
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