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This study will use electromyography and dynamometry to evaluate gluteal muscle activation during the Trendelenburg hip abduction test in different hip positions.
The Trendelenburg test is commonly used to assess hip abductor weakness. However, it is unclear which hip position during this test best isolates gluteal muscle function. This study will measure gluteus medius and minimus activation and hip abduction force in 30 healthy participants performing the Trendelenburg test. Different hip flexion, extension, adduction and abduction angles will be evaluated to determine which position optimally targets the gluteal muscles. Results may enhance utilization of the Trendelenburg test in clinical practice.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Healthy Adults | At least 30 healthy adult participants aged 18-45 years performing the Trendelenburg hip abduction test |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Trendelenburg hip abduction test | Diagnostic Test | The Trendelenburg test performed at different hip flexion, extension, adduction and abduction angles. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Gluteus Medius Activation | Mean EMG activity of the gluteus medius during the Trendelenburg test at different hip positions. Measured bilaterally in microvolts (μV). | Baseline |
| Measure | Description | Time Frame |
|---|---|---|
| Gluteus Minimus Activation during Trendelenburg Test | Mean muscle activation amplitude (measured in microvolts, μV) of the gluteus minimus during the Trendelenburg hip abduction test across a range of hip flexion, extension, adduction and abduction angles from 0 to 45 degrees. Measured bilaterally using surface electromyography electrodes placed on the muscle belly of the gluteus minimus. | Baseline |
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Inclusion Criteria:
Exclusion Criteria:
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Healthy men and women aged 18-45 recruited from the local community.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Mohamed M ElMeligie, Ph.d | Contact | +201064442032 | mohamed.elmeligie@acu.edu.eg |
| Name | Affiliation | Role |
|---|---|---|
| Amal Fawzy, Ph.d | Faculty of Physical Therapy, Ahram Canadian University | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Outpatient clinic of faculty of physical therapy, Ahram Canadian University | Recruiting | Al Ḩayy Ath Thāmin | Giza Governorate | 3221405 | Egypt |
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| ID | Term |
|---|---|
| D018908 | Muscle Weakness |
| ID | Term |
|---|---|
| D009135 | Muscular Diseases |
| D009140 | Musculoskeletal Diseases |
| D020879 | Neuromuscular Manifestations |
| D009461 | Neurologic Manifestations |
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| Hip Abduction Strength during Trendelenburg Test | Maximum voluntary isometric hip abduction strength (measured in Newtons, N) during the Trendelenburg hip abduction test maneuver. Measured bilaterally at each combination of hip flexion, extension, adduction and abduction angles using a stabilized handheld dynamometer placed just proximal to the lateral femoral condyle. | Baseline |
| D009422 | Nervous System Diseases |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D012816 | Signs and Symptoms |