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    Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain

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    Author
    Willson, John D.; Davis, Irene S.
    Abstract
    Context: Lower extremity (LE) weakness might be associated with altered mechanics during weight bearing in subjects with patellofemoral pain syndrome (PFPS). Objective: To analyze LE strength, mechanics, and the association between these variables among women with and without PFPS during a simulated athletic task. Design: Case control. Setting: Motion-analysis laboratory. Subjects: 20 women with PFPS and 20 healthy women. Main Outcome Measures: Peak isometric lateral trunk-flexion, hipabduction, hip external-rotation, knee-flexion, and knee-extension strength, as well as hip- and knee-joint excursions and angular impulses during single-leg jumps. Results: PFPS subjects produced less hip-abduction, hip external-rotation, and trunk lateral- flexion force than the control group. The PFPS group also demonstrated greater hipadduction excursion and hip-abduction impulses. The association between the strength measurements and LE mechanics was low. Conclusions: Women with PFPS demonstrate specific weaknesses and altered LE mechanics. Weakness is not, however, highly correlated with observed differences in mechanics. ABSTRACT FROM AUTHOR
    URI
    http://hdl.handle.net/10342/4278
    Subject
     Anterior knee pain; Hip; Kinematics; Kinetics; Patella 
    Date
    2009
    Citation:
    APA:
    Willson, John D., & Davis, Irene S.. (January 2009). Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain. Journal Of Sport Rehabilitation, 18(1), 76- 90. Retrieved from http://hdl.handle.net/10342/4278

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    MLA:
    Willson, John D., and Davis, Irene S.. "Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain". Journal Of Sport Rehabilitation. 18:1. (76-90), January 2009. September 24, 2023. http://hdl.handle.net/10342/4278.
    Chicago:
    Willson, John D. and Davis, Irene S., "Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain," Journal Of Sport Rehabilitation 18, no. 1 (January 2009), http://hdl.handle.net/10342/4278 (accessed September 24, 2023).
    AMA:
    Willson, John D., Davis, Irene S.. Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain. Journal Of Sport Rehabilitation. January 2009; 18(1): 76-90. http://hdl.handle.net/10342/4278. Accessed September 24, 2023.
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