The Effect of Different Focusing Methods on Muscle Activity

The Effect of Different Focusing Methods on Muscle Activity During The Single Leg Squat Movement

The aim of this study is to compare the effects of different focusing methods on muscular activity

Study Overview

• Status: Completed
• Conditions: Knee Injuries and Disorders
• Intervention / Treatment: Other: Single leg squat

Detailed Description

After the first data collecting ( Demographic data, Inclusion criteria) surface electromyography EMG evaluations will be taken from 6 muscles( Vastus Medialis, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Semitendinosus, Gluteus Medius). These recordings will be taken in 3 different circumstances: 1- Without a focusing method 2- With an external focus and 3- With an internal focus

• Study Type: Observational
• Enrollment (Actual): 16

Contacts and Locations

Study Locations

• Turkey
  • İ̇stanbul
    • Ankara, İ̇stanbul, Turkey
      • Emre Serdar Atalay

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years to 23 years (Adult)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Healthy Volunteers

Description

Inclusion Criteria:

• Being between the ages of 18-25
• Having a Body Mass Index between 18.5-24.9

Exclusion Criteria:

• Having trauma/surgery involving the lower extremity in the last 6 months or having any disorder affecting hip and knee muscle function
• Foot Posture Index score not being between 0 and +5
• Hamstring Flexibility- Sit and Reach Test score greater than +5 cm
• Restricted ankle dorsiflexion angle (It will be expected to be at least 5 degrees more than neutral)

Study Plan

How is the study designed?

Design Details

• Observational Models: Case-Only
• Time Perspectives: Prospective

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
1; Single leg squat without a clue or focusing method; Single leg squat with an external focus; Sinlge leg squat with an internal focus	Other: Single leg squat; Single leg squat exercise in different circumstances

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Surface Electromyography	Surface EMG evaluations of Vastus Medialis, Vastus Lateralis, Rectus Femoris, Biceps Femoris, Semitendinosus and Gluteus Medius Muscles in 3 conditions in a row(Without a focusing method, With an internal focus, With an external focus	Procedure (During the intervention)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Foot Posture Index	Evaluations of Foot by inspection	Baseline, for inclusion criteria
Sit and Reach Test	Assessment of hamstring flexibility	Baseline, for inclusion criteria
Gluteus Medius Muscle Dynamometer Assessment	Assessment of Gluteus Medius Strength	Baseline, for inclusion criteria
Ankle Dorsi Flexion Goniometer Assessment	Assessment of Dorsiflexion	Baseline, for inclusion criteria

Collaborators and Investigators

• Sponsor: Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
• Investigators: Principal Investigator: Emre Serdar Atalay, PhD, Saglik Bilimleri Universitesi

Study record dates

Study Major Dates

• Study Start (Actual): September 20, 2022
• Primary Completion (Actual): October 4, 2022
• Study Completion (Actual): October 4, 2022

Study Registration Dates

• First Submitted: December 4, 2021
• First Submitted That Met QC Criteria: January 10, 2022
• First Posted (Actual): January 11, 2022

Study Record Updates

• Last Update Posted (Actual): November 8, 2022
• Last Update Submitted That Met QC Criteria: November 7, 2022
• Last Verified: November 1, 2022

More Information

Terms related to this study

• Keywords: single leg squat; muscular activity; knee alignment
• Additional Relevant MeSH Terms: Wounds and Injuries; Leg Injuries; Knee Injuries
• Other Study ID Numbers: 2021-388

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

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