Impact of tensor fascia lata stretch prior to squat on vastus medialis obliqus activity in patellofemoral pain syndrome: Pretest- posttest single group study.
Fouad, T., Youssef, E., Allam, N., Tawfeek, A. (2025). Impact of tensor fascia lata stretch prior to squat on vastus medialis obliqus activity in patellofemoral pain syndrome: Pretest- posttest single group study.. EKB Journal Management System, 3(1), 231-237. doi: 10.21608/bijpt.2025.370286.1081
Tasneem Khaled Fouad; Enas Fawzy Youssef; Nashwa Mohamed Allam; Aliaa Ali Tawfeek. "Impact of tensor fascia lata stretch prior to squat on vastus medialis obliqus activity in patellofemoral pain syndrome: Pretest- posttest single group study.". EKB Journal Management System, 3, 1, 2025, 231-237. doi: 10.21608/bijpt.2025.370286.1081
Fouad, T., Youssef, E., Allam, N., Tawfeek, A. (2025). 'Impact of tensor fascia lata stretch prior to squat on vastus medialis obliqus activity in patellofemoral pain syndrome: Pretest- posttest single group study.', EKB Journal Management System, 3(1), pp. 231-237. doi: 10.21608/bijpt.2025.370286.1081
Fouad, T., Youssef, E., Allam, N., Tawfeek, A. Impact of tensor fascia lata stretch prior to squat on vastus medialis obliqus activity in patellofemoral pain syndrome: Pretest- posttest single group study.. EKB Journal Management System, 2025; 3(1): 231-237. doi: 10.21608/bijpt.2025.370286.1081

Impact of tensor fascia lata stretch prior to squat on vastus medialis obliqus activity in patellofemoral pain syndrome: Pretest- posttest single group study.

Benha International Journal of Physical Therapy
Volume 3, Issue 1, June 2025, Page 231-237  XML PDF (407.29 K)
Document Type: Original Article
DOI: 10.21608/bijpt.2025.370286.1081
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Authors
Tasneem Khaled Fouad email orcid 1; Enas Fawzy Yousseforcid 2; Nashwa Mohamed Allam3; Aliaa Ali Tawfeek4
1Department of physical therapy for musculoskeletal disorders and its surgery, Faculty of physical therapy, Abram Canadian University, Giza , Egypt
2Department of Physical Therapy for Musculoskeletal Disorders and its Surgery, Faculty of Physical Therapy, Cairo University, Egypt.
3Lecturer of department of physical therapy for musculoskeletal System disorders and its surgery Faculty of Physical Therapy Ahram Canadian University
4Lecturer of clinical neurophysiology Faculty of Medicine Cairo University
Abstract
Background: A prevailing cause of knee pain is the patellofemoral pain syndrome (PFPS) resulting from imbalance in the quadriceps components. Previous studies sought exercises that enhance vastus medialis obliquus (VMO) activation and the VMO to vastus lateralis (VL) ratio in PFPS patients. Purpose: This study tested if there is a difference in the muscle activity of the VMO and VL and VMO: VL ratio during standing and squat before and after tensor facia lata (TFL) stretch in PFPS patients. Methods: 37 PFPS patients participated in this study with age between 18 and 30 years. Participants performed three squat repetitions while the muscle activity of the VMO and VL was measured using electromyography (EMG) in standing and squat hold positions. They then completed a static stretch of the TFL in a side-lying position, holding the stretch for one minute and repeating it five times with 10-second intervals. Afterward, VMO and VL activity was remeasured, and the VMO:VL ratio was calculated before and after the TFL stretch. Results: No statistical differences were found in the VMO (r=0.08), VL activity (r=0.1), or VMO: VL ratio (r=0.21) while standing after the TFL stretch. A decrease in the VMO (r=0.52) and VL (r=0.47) activity occurred during the squat hold position, but the VMO: VL ratio (0.02) remained unchanged (p >0.05). Conclusion: The TFL stretch couldn’t enhance the VMO:VL ratio in PFPS patients. Further studies are needed to compare the results between both genders and study the effects of incorporating TFL stretch with VMO activation exercises.
Keywords
Electromyography; Iliotibial Band; Squat; Static Stretch
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