INFLUENCE OF SELECTED POSITIONS ON HIP ABDUCTORS STRENGTH AND ACTIVATION IN PATELLOFEMORAL PAIN SYNDROME IN MALES (PFPS)

The study aims to explore the effect of body position (side-lying versus standing) on hip abductors muscle strength and activation in individuals with and without PFPS and then to compare these measures between the two groups in each position

Study Overview

• Status: Not yet recruiting
• Conditions: Patellofemoral Pain (PFPS)

Detailed Description

A cross-sectional comparative study involving 44 subjects (22 subjects with PFPS and 22 healthy controls), aged 18-35 years. The study will measure hip abductor muscle strength (Peak torque, Maximal total work) using the Biodex Isokinetic System 4 PRO and muscle activity (%MVC) of the gluteus medius, gluteus maximus, and tensor fascia lata using Surface EMG (Noraxon Ultium EMG). Measurements will be taken in both standing and side-lying positions.

• Study Type: Observational
• Enrollment (Estimated): 44

Contacts and Locations

• Study Contact: Name: MOHAMED GOUDA MOHAMED, bachelor of physical therapy; Phone Number: +201092948701; Email: mohamed.gouda@acu.edu.eg

Study Locations

• Egypt
  • Giza, Egypt
    • Ahram Canadian University
    • Contact: Mohamed Gouda; Phone Number: +20 10 92948701; Email: mohamed.gouda@acu.edu.eg

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Non-Probability Sample

Study Population

44 subjects, divided into 22 subjects with PFPS and 22 healthy controls, recruited from the outpatient clinics and staff/students of Ahram Canadian University

Description

Inclusion Criteria:

• Age 18-35 years; Normal BMI; Subjects in the PFPS group diagnosed with unilateral PFPS by an orthopedist; Healthy individuals without knee pain (for the control group)

Exclusion Criteria:

• History of lower limb surgery; Any neurological disorders; Musculoskeletal disorders affecting the lower limb; Additional sources of anterior knee pain (tendonitis, Osgood-Schlatter, bursitis, etc.); Any inflammatory diseases

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
PFPS Group; Subjects with unilateral PFPS diagnosed by an orthopedist; age 18-35 years; normal BMI
Control Group; Healthy individuals without knee pain; age 18-35 years; normal BMI

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Muscle activity (%MVC) of the gluteus medius, gluteus maximus, and tensor fascia lata	using SEMG	During the assessment procedure (single time point)
Peak torque (Nm) of hip abductors muscles	using isokinetic	During the assessment procedure (single time point)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Maximal total work (J) during concentric and eccentric contractions	Using Isokinetic	During the assessment procedure (single time point)
The Arabic Version of the Kujala Score (Anterior Knee Pain Scale)	A questionnaire	Baseline/Pre-assessment

Collaborators and Investigators

• Sponsor: Ahram Canadian University
• Investigators: Study Chair: mohamed gouda mohamed, bachelor of physical therapy, Teaching assistant, Department of Physiotherapy, Department of Physical Therapy for Musculoskeletal Disorders and its Surgery, Faculty of Physical Therapy, Ahram Canadian University, Giza, Egypt

Publications and helpful links

General Publications

• de Castro MP, Sanchotene CG, Costa GV, Lopes CMS, Hubert M, de Brito Fontana H, Ruschel C. Comparison between side-lying and standing positions for hip abductor strength assessment. J Bodyw Mov Ther. 2022 Apr;30:181-186. doi: 10.1016/j.jbmt.2022.02.011. Epub 2022 Feb 12.

Study record dates

Study Major Dates

• Study Start (Estimated): December 15, 2025
• Primary Completion (Estimated): January 15, 2026
• Study Completion (Estimated): February 15, 2026

Study Registration Dates

• First Submitted: December 13, 2025
• First Submitted That Met QC Criteria: December 13, 2025
• First Posted (Actual): December 26, 2025

Study Record Updates

• Last Update Posted (Actual): December 26, 2025
• Last Update Submitted That Met QC Criteria: December 13, 2025
• Last Verified: December 1, 2025

More Information

Terms related to this study

• Keywords: Muscle Strength; Standing; Muscle Activity; Hip Abductors; Side-lying
• Additional Relevant MeSH Terms: Musculoskeletal Diseases; Joint Diseases; Patellofemoral Pain Syndrome
• Other Study ID Numbers: Cairo University (Other Identifier: Cairo University)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED
• IPD Plan Description: no specific reason

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No