Impact of Tensor Fascia Latae Stretch Prior to Squat on Vastus Medialis Obliquus Activity in Patellofemoral Pain Syndrome
Fouad, T., Youssef, E., Allam, N., Tawfeek, A. (2025). Impact of Tensor Fascia Latae Stretch Prior to Squat on Vastus Medialis Obliquus Activity in Patellofemoral Pain Syndrome. EKB Journal Management System, 4(1), 19-29. doi: 10.21608/iptccu.2025.437987
Tasneem Khaled Fouad; Enas Fawzy Youssef; Nashwa Mohamed Allam; Aliaa Ali Tawfeek. "Impact of Tensor Fascia Latae Stretch Prior to Squat on Vastus Medialis Obliquus Activity in Patellofemoral Pain Syndrome". EKB Journal Management System, 4, 1, 2025, 19-29. doi: 10.21608/iptccu.2025.437987
Fouad, T., Youssef, E., Allam, N., Tawfeek, A. (2025). 'Impact of Tensor Fascia Latae Stretch Prior to Squat on Vastus Medialis Obliquus Activity in Patellofemoral Pain Syndrome', EKB Journal Management System, 4(1), pp. 19-29. doi: 10.21608/iptccu.2025.437987
Fouad, T., Youssef, E., Allam, N., Tawfeek, A. Impact of Tensor Fascia Latae Stretch Prior to Squat on Vastus Medialis Obliquus Activity in Patellofemoral Pain Syndrome. EKB Journal Management System, 2025; 4(1): 19-29. doi: 10.21608/iptccu.2025.437987

Impact of Tensor Fascia Latae Stretch Prior to Squat on Vastus Medialis Obliquus Activity in Patellofemoral Pain Syndrome

International Physical Therapy Conference - Cairo University
Volume 4, Issue 1 - Serial Number 20251, 2025, Page 19-29  XML PDF (453.58 K)
Document Type: Original Article
DOI: 10.21608/iptccu.2025.437987
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Authors
Tasneem Khaled Fouad email 1; Enas Fawzy Youssef2; Nashwa Mohamed Allam3; Aliaa Ali Tawfeek4
1Teaching assistant of department of physical therapy for musculoskeletal System disorders and its surgery Faculty of Physical Therapy Ahram Canadian University
2Professor and Chairperson of department of physical therapy for musculoskeletal system disorders and its surgery Faculty of Physical Therapy Cairo University
3Lecturer of department of physical therapy for musculoskeletal System disorders and its surgery Faculty of Physical Therapy Ahram Canadian University
44. Lecturer of clinical neurophysiology Faculty of Medicine Cairo University
Abstract
Background: Patellofemoral pain syndrome (PFPS) is a prevalent causes of anterior knee pain among young adults resulting from imbalance in the quadriceps muscle components. Previous studies investigated exercises that enhance vastus medialis obliquus (VMO) activation and improve the VMO to vastus lateralis (VL) ratio in PFPS patients. Purpose: to test if there is a difference in VMO muscle activity and VMO: VL ratio during squats before and after tensor facia latae (TFL) stretch in PFPS patients. Patients and methods: Thirty-seven PFPS patients participated in this study with age between 18 and 30 years. Patients 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, VL activity, or VMO: VL ratio while standing after the TFL stretch. A decrease in the VMO and VL activity occurred during the squat hold position, but the VMO: VL ratio remained unchanged (p >0.5). Conclusion: there was no change in VMO and VL activity or the VMO:VL ratio after the TFL stretch in the standing phase. In the squat position, both VMO and VL activity substantially decreased, but the VMO:VL ratio stayed the same.
Keywords
patellofemoral pain syndrome; vastus medialis oblique tensor fascia latae; iliotibial band; squat; static stretch
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