Effect of Hip Adductors Isometric Contraction on Knee Extensors Isokinetic Torque in Patellofemoral Pain Syndrome

Zaki, Yasmine Ramadan; Abdelsalam, Mohammed Shawki; Faggal, Mona Selim; Ezzat, Mohamed

doi:10.21608/ejpt.2023.204674.1129

Effect of Hip Adductors Isometric Contraction on Knee Extensors Isokinetic Torque in Patellofemoral Pain Syndrome

Document Type : Original Article

Authors

¹ department of physical therapy for musculoskeletal disorders and its surgeries, faculty of physical therapy, Badr university in Cairo, Egypt

² Department of physical therapy for musculoskeletal disorders and its Surgery, Faculty of physical therapy, Cairo University

³ Department of Physical Therapy for Musculoskeletal Disorders and its Surgery, Faculty of Physical Therapy, Badr University in Cairo, Egypt.

⁴ Department of physical therapy for musculoskeletal disorders and its surgery. Faculty of physical therapy Cairo university, Egypt

10.21608/ejpt.2023.204674.1129

Abstract

Abstract

Objective: To investigate if the isometric contraction of the hip adductors has an effect on the knee extensor peak torque either at 60⁰/s and 180⁰/s in patients with unilateral patellofemoral pain syndrome.
Methods: 30 male and female aged 18-35 years old, the peak torque of the knee extensor muscles was measured by using the isokinetic dynamometer at the speeds of 60⁰/s and 180⁰/s. The isometric peak torque of hip adduction was measured by using handheld dynamometer. The visual analogue scale was used for pain level assessment.
Results: The correlation between hip adduction isometric peak torque and concentric knee extension peak torque at 60⁰/s was weak negative non-significant correlation (r = -0.04, p = 0.82) and the correlation between hip adduction isometric peak torque and concentric knee extension peak torque at 180⁰/s was weak positive non-significant correlation (r = 0.08, p = 0.66). There was a significant decrease in pain without hip adductors isometric contraction at 180⁰/s compared with that at 60⁰/s (p = 0.001).
Conclusions: There was no significant interaction between the effect of hip adductors isometric contraction and knee extensor peak torque at angular velocities 60⁰/s and 180⁰/s. There was no significant difference in pain between with and without hip adductors isometric contraction at 60⁰/s and 180⁰/s. There was a significant decrease in knee pain with and without hip adductors isometric contraction at 180⁰/s compared with that at 60⁰/s.

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