Utilizing the Trunk as a Proximal Lever to Strengthen the Hip Musculature and Alter Lower Extremity Function

Study Overview
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Brief Summary
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Does a rotary based triplanar exercise intervention that utilizes the trunk as a proximal lever, strengthen the hip and alter dynamic LE alignment in running females?

Detailed Description
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Current hip-focused programs fail to alter hip adduction angles in females while performing higher speed and more complex maneuvers such as running. (Willy, et al., 2011) - 10 female runners, underwent 6 wk. hip focused intervention, change in SLS but NO change in hip adduction angle while running. A different intervention strategy that includes utilizing the trunk as the proximal lever to strengthen the hip, could potentially alter biomechanical outcomes such as hip adduction angles in female runners. This study will apply a new intervention model and then measure running, single leg squat and hip strength to determine if a newly informed intervention can alter LE kinematics in females while running and make improvements in hip strength following the intervention Inclusion Criteria 18 years old or greater Female Exclusion Criteria Injury of the lumbar spine, hips, knees or foot/ankle in the last 6mos that required medical attention any surgery of the lower back or the pelvis or lower extremities any time in the subjects life

Official Title
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Investigating the Effects of a Triplanar Rotary Based Hip Focused Therapeutic Exercise Program on Dynamic Lower Extremity Alignment and Functional Performance

Conditions
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Patellofemoral Pain Syndrome

Intervention / Treatment
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* Other: Triplanar Rotary Resistance


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 18> year old female; must be able to run on the treadmill for 5-7 min and perform a single leg squat Exclusion Criteria: surgery to the LB or lower extremities Significant injury (seeking medical attention) to the LB or LEs in the last 6mos.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: One group will do current hip focused intervention published previously second group will receive a new hip intervention and then pre/post testing will take place for static and dynamic kinematics and hip strength
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Hip<br>This group will perform a known hip strengthening program | Other: Triplanar Rotary Resistance<br>* Trunk group will strengthen the hip using the trunk as a lever to access the hip. The hip group will use femur as the lever to strengthen the hip.<br>* Other names: Convention Hip Focused;|
| Experimental: Trunk<br>This group will use the trunk as a lever to strengthen the hip | Other: Triplanar Rotary Resistance<br>* Trunk group will strengthen the hip using the trunk as a lever to access the hip. The hip group will use femur as the lever to strengthen the hip.<br>* Other names: Convention Hip Focused;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Hip Strength after a 12 week hip focused intervention | Isometric hand held dynamometer | Baseline measures at initial data collection; repeat post intervention measures at 6wks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Biomechanical assessment of single leg squat | Subject squats on single leg and qualitative scoring is administered to determine the subjective amount of contralateral pelvic drop and femoral adduction to be described as dynamic knee valgus. The qualitative values will be binary in nature, whereas DKV is present or not. | Baseline measures at initial data collection; repeat post intervention measures at 6wks | 
| Biomechanical Running Assessment | 2/3D analysis of running gait following intervention; Utilizing both 3D/2D methods the measure of contralateral pelvic drop and the bisection of the patella will determine the amount of femoral adduction noted during running. The change in the femoral adduction angle after a 6 week intervention is the specific outcome measure to be obtained. | Baseline measures at initial data collection; repeat post intervention measures at 6wks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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hip, knee, exercise, proximal control, PFPS