Relationship Between Muscle Strength and Balance

NCT07419750 | Completed

• 1 other identifier: 19.12
• Study Type: observational
• Target: 72
• Locations: 1 country
• Sites: 1

Brief Summary

This study aims to examine the relationship between lower extremity muscle strength and balance and to compare these parameters between healthy individuals and individuals with lower extremity injuries.

Conditions

Healthy; Chronic Ankle Instability, CAI; Anterior Cruciate Ligament Injury; Muscle Strengh; Balance

Outcome Measures

Primary Outcomes (1)

• Static Balance Performance-ALFA Stabilometric Platform

  Static balance performance will be assessed using the ALFA Stabilometric Platform. A static balance performance score generated by the device software will be recorded separately for each side during the assessment. Higher scores indicate better static balance performance.

  Baseline

Secondary Outcomes (5)

• Dynamic Balance Performance-ALFA Stabilometric Platform

  Baseline

• Isokinetic Muscle Strength

  Baseline

• Isokinetic Muscle Endurance

  Baseline

• Pain Intensity

  Baseline

• Kinesiophobia

  Baseline

Study Arms (3)

Healthy Controls

ACL Injury Group

CAI Group

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

The study population will consist of adults aged 18-40 years, including individuals with a unilateral anterior cruciate ligament injury, individuals with chronic ankle instability, and healthy controls. Participants with lower extremity injuries will have a confirmed diagnosis within the past 6 to 18 months. All participants will be able to speak, read, and understand Turkish and will voluntarily consent to participate in the study.

You may qualify if:

• Anterior Cruciate Ligament (ACL) Injury Group:
• Aged between 18 and 40 years
• Diagnosed with a unilateral ACL injury 6 to 18 months prior to participation
• Diagnosis confirmed by magnetic resonance imaging (MRI)
• Ability to speak, read, and understand Turkish
• Willingness to participate voluntarily in the study
• Chronic Ankle Instability (CAI) Group:
• Aged between 18 and 40 years
• Diagnosed with chronic ankle instability due to recurrent ankle sprains 6 to 18 months prior to participation
• History of at least two ankle sprains
• Ongoing symptoms of functional ankle instability (e.g., episodes of giving way, feelings of instability)
• Ability to speak, read, and understand Turkish
• Willingness to participate voluntarily in the study
• Healthy Control Group:
• Aged between 18 and 40 years

You may not qualify if:

• Presence of neurological, vestibular, or visual disorders that may affect balance
• History of other orthopedic diseases or trauma
• Presence of musculoskeletal disorders or cardiovascular comorbidities
• History of physiotherapy, rehabilitation, or surgical intervention within the past 6 months

Sponsors & Collaborators

• Biruni University: lead

Study Sites (1)

Biruni University

Istanbul, Zeytinburnu, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Anterior Cruciate Ligament Injuries

Condition Hierarchy (Ancestors)

Knee Injuries; Leg Injuries; Wounds and Injuries

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: PROSPECTIVE
• Target Duration: 2 Days
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Study Record Dates

• First Submitted: December 19, 2025
• First Posted: February 19, 2026
• Study Start: August 4, 2025
• Primary Completion: February 2, 2026
• Study Completion: March 2, 2026
• Last Updated: March 24, 2026

Record last verified: 2025-07

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)