Relationship between Lower Extremity Kinematics and Muscle Strength, Pain, Physical Activity Level, and Functional Status in Females with Patellofemoral Pain
Message:
Abstract:
Background

Impaired lower extremity kinematics has beenconsidered as a contributing factor to patellofemoral pain (PFP). However, current knowledge about the correlation between lower extremity kinematics and muscle strength is very limited. This study investigated the correlation between lower extremity kinematics and muscle strength, pain, physical activity level, as well as functional status in females with PFP.

Methods

Seventy-five females with PFP participated in this analytical crosssectional study. Lower extremity kinematics, maximal isometric strength of muscles, pain severity, physical activity level, as well as subjective and objective function were assessed using a motion analysis system, a dynamometer, Visual Analog Scale, the International Physical Activity questionnaire, and the Kujala questionnaire and the step-down test, respectively. The hip and knee kinematics were determined during the initial contact and the initial phase of landing. Pearson’s correlation coefficients were calculated to establish the correlation between the variables.

Results

The knee rotation at the initial contact was significantly correlated with quadriceps strength (r=-0.240, P=0.038) and pain severity (r=0.268, P=0.020). Pain was significantly correlated with hamstring (r= -0.310, P=0.007) and quadriceps strength (r=-0.253, P=0.029) and the Kujala score (r=-0.346, P=0.002).

Conclusion

Our findings do not indicate a strong correlation between muscle strength and joint kinematics in females with PFP. An explanation is the presence of various subgroups of people with PFP. Future studies should focus on evaluating the correlation between the risk factors of PFP in subgroups, classified based on biomechanical, psychosocial, and anatomical characteristics.

Article Type:
Research/Original Article
Language:
English
Published:
Journal of Rehabilitation Sciences and Research, Volume:6 Issue:3, 2019
Pages:
130 - 136
magiran.com/p2057724  
روش‌های دسترسی به متن این مطلب
اشتراک شخصی
در سایت عضو شوید و هزینه اشتراک یک‌ساله سایت به مبلغ 300,000ريال را پرداخت کنید. همزمان با برقراری دوره اشتراک بسته دانلود 100 مطلب نیز برای شما فعال خواهد شد!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی همه کاربران به متن مطالب خریداری نمایند!