Comparison the Gender Effects of Knee Joint and Foot Complex Alignment During Single Leg Squat in Sedentaries

NCT07262996 | Completed

• 1 other identifier: IstinyeUniversity
• Study Type: observational
• Target: 70
• Locations: 1 country
• Sites: 1

Brief Summary

In this study, the investigators aimed to investigate the relationship between the dynamic valgus index and the dynamic valgus index during the landing phase of the single leg squat movement of sedentary people according to gender and to evaluate the effect of the postural alignment of the ankle and foot complex on the stability of the knee joint during the single leg squat.

Conditions

Woman's Role; Men's Role

Keywords

Single leg squat test; Q angle; Lower extremity alignment; Dynamic knee valgus; Navicular drop

Outcome Measures

Primary Outcomes (7)

• Dynamic Valgus Index(DVI)

  The mark between the participant's SIAS and the midpoint of the patella will be marked as the femur segment, and the mark between the patella and the foot will be marked as the tibia segment and video recording will be taken. Dynamic Valgus Index Measurement will be performed using Kineovea 0.9.5 motion analysis program. Knee frontal plane projection angle(KFPPA) will be measured with the computer program. The angle hip frontal plane projection angle(HFPPA) will be measured between the pelvis and the femur segment by determining the pelvis segment with the line connecting both SIAS marks. HFPPA will be subtracted from 90 degrees (90º - A) and KFPPA will be subtracted from 180 degrees (180º - B) and the DVI angle will be obtained by summing these two values.

  3 months

• Single leg squat test

  The participants' spina iliaca anterior superior (SIAS) in the frontal plane, the middle of the patella on both sides, and the middle of the ankle will be marked by sticking red colored tape. The test protocol will be explained, visually demonstrated, and three (3) repetitions will be made to try and get used to the test. A T-shape will be drawn on the floor with tape to facilitate the evaluation and they will be asked to hold their free foot behind their back while standing barefoot. They will be asked to perform a squat every two seconds without leaning forward and sideways, while maintaining their balance with their hands crossed on their chest. While performing the movement three (3) times in a slow and controlled manner, they will be recorded with a video camera positioned at 90 degrees to their full height (approximately 3m). It will be observed on the video whether the participants are positioned in the straight midline towards the single leg squat test line. If the patella

  3 months

• Foot posture index

  The participants' foot posture will be assessed using the Foot Posture Index developed by Redmond et al. (2006) to assess foot posture. It is mainly used to define the degree of supination, neutral or pronation position of the foot. All assessments are performed in a comfortable standing position with equal weight on both feet. This posture is reported to be close to the positions taken by the foot during the gait cycle. This index is composed of 6 assessment headings: palpation of the talus head, inclination above and below the lateral malleolus, calcaneal inversion/eversion assessment in the hindfoot, talonavicular alignment (concavity/convexity), medial arch height and forefoot abduction/adduction in the forefoot.

  3 months

• The demographic data of the participants

  Age, gender, dominant limb, occupational status, working positions, sports practiced, if any, and weekly physical activity duration of the individuals included in the study will be recorded before the tests. The dominant limb will be determined as the limb preferred by the individuals for kicking the ball.

  3 months

• Weight of the participants

  Weight of the participants were measured

  3 months

• Height of the participants

  Height of the participants were measured

  3 months

• Body Mass Index(BMI) of the participants

  BMI was calculated from weight and height data as kg/m\^2

  3 months

Secondary Outcomes (1)

• Pain assessment

  3 months

Other Outcomes (9)

• Q angle

  3 months

• Medial Longitudinal Arc Height

  3 months

• Tensor Fascia Lata Muscle Strength

  3 months

Study Arms (2)

Men participants

Men participants between the ages of 18-30 years having an active lifestyle, able to squat without any pain or discomfort during the initial evaluation

Behavioral: Sociodemographic profile, dynamic valgus index, single leg squat test, Q angle, Foot posture index, navicular drop test, pain assessment, muscle strength and flexibility tests

Women participants

Women participants between the ages of 18-30 years having an active lifestyle, able to squat without any pain or discomfort during the initial evaluation

Behavioral: Sociodemographic profile, dynamic valgus index, single leg squat test, Q angle, Foot posture index, navicular drop test, pain assessment, muscle strength and flexibility tests

Interventions

Sociodemographic profile, dynamic valgus index, single leg squat test, Q angle, Foot posture index, navicular drop test, pain assessment, muscle strength and flexibility tests BEHAVIORAL

During the single leg squat test, they will be asked to perform a squat every two seconds without bending forward or sideways while maintaining their balance with their hands crossed over their chest. While performing the movement three (3) times in a slow and controlled manner, they will be recorded with a video camera positioned at 90 degrees to their full height (approximately 3m). This recording will be evaluated in computer environment with Kineovea 0.9.5 motion analysis program and dynamic valgus index will be calculated. Q angle will be measured with a goniometer in both standing and supine position. Medial longitudinal arch height will be measured by navicular drop test. Foot posture of the participants will be evaluated with the Foot Posture Index developed by Redmond et al. (2006) to evaluate foot posture.

Men participants; Women participants

Eligibility Criteria

• Age: 18 Years - 30 Years
• Gender Eligibility Details: Young adult persons
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Probability Sample

Study Population

Healthy young people who can perform the single leg squat activity

You may qualify if:

• To be between the ages of 18-30
• To have the physical capacity to perform single leg squat activity
• Voluntarily participate in the study

You may not qualify if:

• Current pain in the trunk and lower extremities
• Having a disease affecting the musculoskeletal system in the last six months
• History of surgery involving the lumbar region and lower extremities
• Having a neurological disease
• Having a disease that affects balance (such as vertigo)
• Diagnosis of a rheumatologic disease.

Sponsors & Collaborators

• Istinye University: lead

Study Sites (1)

Gaziantep Şahinbey Ünaldı Aile Sağlığı Merkezi

Gaziantep, 27300, Turkey (Türkiye)

Location

Related Publications (3)

• Gianola S, Castellini G, Stucovitz E, Nardo A, Banfi G. Single leg squat performance in physically and non-physically active individuals: a cross-sectional study. BMC Musculoskelet Disord. 2017 Jul 14;18(1):299. doi: 10.1186/s12891-017-1660-8.

  PMID: 28709418 BACKGROUND

• Scholtes SA, Salsich GB. A DYNAMIC VALGUS INDEX THAT COMBINES HIP AND KNEE ANGLES: ASSESSMENT OF UTILITY IN FEMALES WITH PATELLOFEMORAL PAIN. Int J Sports Phys Ther. 2017 Jun;12(3):333-340.

  PMID: 28593087 BACKGROUND

• Warner MB, Wilson DA, Herrington L, Dixon S, Power C, Jones R, Heller MO, Carden P, Lewis CL. A systematic review of the discriminating biomechanical parameters during the single leg squat. Phys Ther Sport. 2019 Mar;36:78-91. doi: 10.1016/j.ptsp.2019.01.007. Epub 2019 Jan 22.

  PMID: 30703642 BACKGROUND

MeSH Terms

Interventions

Muscle Strength

Intervention Hierarchy (Ancestors)

Physical Examination; Diagnostic Techniques and Procedures; Diagnosis; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Officials

• Habibe Serap İnal, PhD

  Istanbul Galata University

  STUDY DIRECTOR

• Mehmet Onur Savaş, MSc.c

  Istinye University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 14, 2023
• First Posted: December 4, 2025
• Study Start: September 25, 2023
• Primary Completion: July 25, 2024
• Study Completion: July 25, 2024
• Last Updated: December 4, 2025

Record last verified: 2023-10

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)