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Clinical Trials/NCT07238491
NCT07238491CompletedNot Applicable

Impact of Virtual Reality on Flexibility, Muscle Strength and Gait Parameters in Sedentary Adults With Hamstring Shortening: A Randomized Controlled Trial

Cairo University1 site in 1 country84 target enrollmentStarted: November 20, 2025Last updated:
Interventions

Trial Snapshot

Phase
Not Applicable
Status
Completed
Enrollment
84
Locations
1
Primary Endpoint
Muscle strength

Study Overview

Brief Summary

Tightness of hamstring muscle is known as a reduction in range of motion accompanied by a sensation of restriction in the posterior aspect of thigh. Numerous reasons can cause it, such as genetic susceptibility, compensatory tightness due to persistent abnormalities, and muscular strain. Tight hamstrings cause a small amount of knee flexion during exercise and require comparatively high quadriceps efforts to offset the hamstrings' passive resistance. This could result in knee joint pain that affects gait and raise the reaction forces at the patellofemoral joint.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Treatment
Masking
Single (Outcomes Assessor)

Eligibility Criteria

Ages
18 Years to 30 Years (Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Sedentary adults with tightness of hamstring muscle with the degree of flexion for knee joint more than 20° throughout active knee extension (AKE) test.
  • Their age between 18 and 30 years.
  • BMI less than 30 kg/ m2 .
  • Sedentary lifestyle that includes sitting on the chair for long period of time for minimum 6 hours per day, 5 days/week for 6 months minimally.
  • Participants who did not engaged in a physiotherapy programs in the previous 6 months.
  • Absence of fractures, injuries or medications (such as analgesics or muscle relaxants) that may affect the results of the study.

Exclusion Criteria

  • Any neurological diseases (such as; severe disc prolapse and radiating pain).
  • Injury of hamstring in the previous 2 years.
  • History of knee injury.
  • Fracture in lower extremity or the spine.
  • Surgery in the spine.
  • Unequal leg length > 2cm.
  • Congenital deformity.
  • Orthopedic disorders such as patellofemoral pain syndrome, musculoskeletal pain, psychiatric problem.
  • Any systemic disease, hearing or visual deficits, cognitive, or cardiovascular complications, and pregnancy.

Arms & Interventions

Group B (control group)

Active Comparator

Participants will receive a traditional physical therapy program only, 2 times per week for 5 weeks.

Intervention: Traditional physical therapy programme (Other)

Group A (Virtual reality group)

Experimental

Participants will receive virtual reality (VR) in addition to the traditional physical therapy program 2 times/week for 5 weeks.

Intervention: Virtual reality (Device)

Group A (Virtual reality group)

Experimental

Participants will receive virtual reality (VR) in addition to the traditional physical therapy program 2 times/week for 5 weeks.

Intervention: Traditional physical therapy programme (Other)

Outcomes

Primary Outcomes

Muscle strength

Time Frame: 5 weeks

Microfit hand-held dynamometer (HHD) will be used for assessment of hamstring muscle strength. Each participant will lie prone on a standard treatment table. In this position, the participant will be instructed to bend their knee to 90° of knee flexion, where the Microfet 2 MMT-Wireless HHD will be placed on the lower leg, and a downward force toward the table will be held for 5s while the participant resists the downward force. The participant will be instructed to use their maximum effort. It will be performed three times, and an average will be recorded.

Secondary Outcomes

  • Active Knee Extension (AKE) Test(5 weeks)
  • Step length(5 weeks)
  • Active Knee Extension (AKE) Test(5 weeks)
  • Step length(5 weeks)
  • Stride length(5 weeks)
  • Cadence(5 weeks)
  • Velocity(5 weeks)

Investigators

Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Nesma Morgan Allam

Assistant Professor of physical therapy for surgery, Faculty of physical therapy

Cairo University

Study Sites (1)

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