Single Leg Squat Performance in Physically and Non-physically Active Individuals

Study Overview
=================
Brief Summary
-----------------
Single-leg squat (SLS) is a functional test visually rated by clinicians for assessing lower limb function as a preventive injury strategy. SLS clinical rating is a qualitative evaluation and it does not count objective outcomes as kinematics data and surface electromyography (sEMG) assessment. Based on the SLS rating, the aims of this study were (i) to determine the clinical rating agreement among six raters and (ii) to assess kinematic and sEMG predictors of good SLS performance in physically and non-physically active individuals.

Official Title
-----------------
Single Leg Squat Performance in Physically and Non-physically Active Individuals: a Cross-sectional Study

Conditions
-----------------
Single Leg Squat Performance, Athletic Injuries

Intervention / Treatment
-----------------
* Other: performance of the single leg squat task


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: body mass index (BMI) between 18.5-25.5, age between 18-35 years old, written informed consent to participate, Exclusion Criteria: - musculoskeletal pain or history of lower extremity injuries lasting more than three months

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 35 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| physically active individuals<br>subjects who perform sports activities more than 6 hours per week | Other: performance of the single leg squat task<br>* The single-leg squat (SLS) is a clinical functional test commonly used to evaluate clinical abnormal movement patterns of the lower limbs in terms of kinetic chain or co-ordinating muscle activity. This scale accounts for the assessment of five dimensions: overall impression, trunk posture, pelvis in space, hip joint motion and knee join motion. The SLS is potentially promising as a functional test since it involves both daily activity and athletic task.<br>* Other names: clinical assessment;|
| non-physically active individuals<br>subjects who perform less than 2 hours per week of sport activities | Other: performance of the single leg squat task<br>* The single-leg squat (SLS) is a clinical functional test commonly used to evaluate clinical abnormal movement patterns of the lower limbs in terms of kinetic chain or co-ordinating muscle activity. This scale accounts for the assessment of five dimensions: overall impression, trunk posture, pelvis in space, hip joint motion and knee join motion. The SLS is potentially promising as a functional test since it involves both daily activity and athletic task.<br>* Other names: clinical assessment;|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| reliability of the clinical assessment | intra- and inter-rater reliability for six clinicians when performing the SLS clinical rating assessment | Baseline | 
| reliability of the clinical assessment | intra- and inter-rater reliability for six clinicians when performing the SLS clinical rating assessment | 2 weeks after the first evaluation | 
| reliability of the clinical assessment | intra- and inter-rater reliability for six clinicians when performing the SLS clinical rating | 1 month after the first evaluation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| kinematic predictors | The following kinematic variables were considered during the single-leg squat: ipsilateral hip flexion in the lateral plane, hip internal rotation, hip adduction, pelvic obliquity, knee flexion (lateral plane) and medio-lateral displacement (frontal plane). | Baseline | 
| sEMG predictors | The surface Electromyography (sEMG) activity of the following muscles were assessed: tensor fasciae latae, rectus femoris, adductor longus, gluteus maximus and transversus abdominis. | Baseline | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Reproducibility of Results, Clinical Assessment