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

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

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.

Study Overview

• Status: Completed
• Conditions: Athletic Injuries; Single Leg Squat Performance
• Intervention / Treatment: Other: performance of the single leg squat task

• Study Type: Observational
• Enrollment (Actual): 72

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 35 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

A cohort of healthy young subjects was recruited.

Description

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

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
physically active individuals; subjects who perform sports activities more than 6 hours per week	Other: performance of the single leg squat task; 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.; Other Names: clinical assessment
non-physically active individuals; subjects who perform less than 2 hours per week of sport activities	Other: performance of the single leg squat task; 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.; 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

Collaborators and Investigators

• Sponsor: Istituto Ortopedico Galeazzi

Publications and helpful links

General Publications

• 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.

Study record dates

Study Major Dates

• Study Start (ACTUAL): March 19, 2014
• Primary Completion (ACTUAL): July 3, 2014
• Study Completion (ACTUAL): July 1, 2016

Study Registration Dates

• First Submitted: June 21, 2017
• First Submitted That Met QC Criteria: June 28, 2017
• First Posted (ACTUAL): June 29, 2017

Study Record Updates

• Last Update Posted (ACTUAL): June 29, 2017
• Last Update Submitted That Met QC Criteria: June 28, 2017
• Last Verified: June 1, 2017

More Information

Terms related to this study

• Keywords: Reproducibility of Results; Clinical Assessment
• Additional Relevant MeSH Terms: Wounds and Injuries; Athletic Injuries
• Other Study ID Numbers: Core Stability L3017

Drug and device information, study documents

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