Type of Article:  Original Research

Volume 5; Issue 6 (December 2017)

Page No.: 2545-2551

DOI: https://dx.doi.org/10.16965/ijpr.2017.246


Lamiaa Kottb Elsayyad, Ayman Goda Matar, Amr Almaz Abdel-aziem *, Salam Mohamed Elhafez.

Department of Biomechanics, Faculty of Physical Therapy, Cairo University, Giza, Egypt.

*Corresponding author: Dr. Amr Almaz Abdel-aziem, Assistant Professor of Biomechanics, Faculty of Physical Therapy, Cairo University, 7 Ahmed Elziat Street, Ben Elsaryat, El Dokki, Giza, Egypt. E-mail: amralmaz@yahoo.com; amralmaz74@gmail.com


Background and objective: The trunk muscles are vital for the maintenance of spinal stability. Little is known regarding the eccentric strength of back and hip extensor in patients with low back pain due to lumbar spondylosis. So, this study was conducted to examine the effect of lumbar spondylosis on the eccentric and concentric peak torque of lumbar and hip extensors muscles.

Materials and Methods: Thirty volunteers participated in the study, 15 patients with lumbar spondylosis and 15 healthy subjects. The isokinetic lumbar and hip extensors’ eccentric and concentric peak torque were measured for both groups. The data were collected using the Biodex Isokinetic system 3 at angular velocity of 60º/sec for lumbar muscles and 30°/sec for hip muscles.

Results: There was no significant difference in lumbar and hip extensors’ eccentric peak torque between both groups (p >0.05) respectively. The concentric torque of the lumbar and hip extensors of lumbar spondylosis group was significantly lower than that of the healthy group (p< 0.05), the concentric torque of both groups were significantly higher than the eccentric peak torque (p< 0.05).

Conclusion: This study displayed that there was no effect of lumbar spondylosis on eccentric torque of lumbar and hip extensors muscles. However, it decreases the concentric torque. So, clinicians must concentrically strengthen the back and hip extensor muscles during designing of rehabilitation program for patients with lumbar spondylosis.

Key words: Eccentric torque, concentric torque, lumbar spondylosis, hip.


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Cite this article: Lamiaa Kottb Elsayyad, Ayman Goda Matar, Amr Almaz Abdel-aziem, Salam Mohamed Elhafez. ECCENTRIC AND CONCENTRIC TORQUE OF THE LUMBAR AND HIP EXTENSORS IN FEMALES WITH LOW BACK PAIN. Int J Physiother Res 2017;5(6):2545-2551. DOI: 10.16965/ijpr.2017.246