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Eight weeks of telehealth-based supervised exercise effectively reduced DKV and pain in women with anterior knee pain. Both intervention groups demonstrated comparable benefits.
This study compared the effects of knee strengthening combined with either hip or ankle joint exercises on dynamic knee valgus (DKV), visual analogue scale (VAS) scores during activity, tendon stiffness, muscle structure, ankle range of motion, and muscle strength in women with anterior knee pain. Forty-five female recreational athletes aged 20-40 with anterior knee pain were randomly assigned to three groups: hip + knee exercises (HK group, n = 15), ankle + knee exercises (AK group, n = 15), and stretching alone (control group, n = 15). The HK and AK groups received supervised telehealth-based exercise sessions (30 minutes/day, 3 times/week for 8 weeks), while the control group received only an educational pamphlet. Assessments were conducted at baseline, 4 weeks, and 8 weeks.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| HK group | Experimental | hip + knee joint exercise group |
|
| AK group | Experimental | ankle + knee joint exercise group |
|
| Stretching group | Sham Comparator | Stretching group |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| hip + knee joint exercise group | Other | Hip: squat, glute bridge and gluteus medius exercise Knee: knee flexor and extensor, isometric squat hold |
|
| Measure | Description | Time Frame |
|---|---|---|
| Single Leg Landing Task | The participant stood on a 30 cm box and first bent the non-testing leg's knee to approximately 90 degrees. After stabilizing, the participant jumped forward with the testing leg to a target 10 cm away from the box, maintaining balance for five seconds upon landing. | 2 minute |
| Measure | Description | Time Frame |
|---|---|---|
| Numeric Pain Rating Scale | 0 indicates no pain and 10 indicates the worst pain imaginable. | 1 minute |
| Patellar Tendon Stiffness Measurement | The stiffness of the patellar tendon was assessed using a handheld device (MyotonPRO; Tallinn, Estonia). |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Nai-Jen Chang | Tainan | Kaohsiung City | 807 | Taiwan |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Sep 25, 2025 |
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| ankle + knee joint exercise group | Other | Knee: knee flexor and extensor, isometric squat hold Ankle: plantar flexor, dorsi flexor and lunge |
|
| Stretching group | Other | Education Handout on Lower Limb Stretching |
|
| 3 minute |
| Muscle structure | A portable ultrasound device (Linear wireless probe LU700L VET) was used to assess the structure of the gastrocnemius and gluteus medius muscles in a resting state. | 15 minute |
| Ankle Joint ROM | used a weight-bearing lunge test to measure the active dorsiflexion angle of the ankle during weight-bearing. | 3 minute |
| Maximum Voluntary Isometric Strength | A handheld dynamometer (MicroFET3; Hoggan Scientific LLC, USA) was used to measure the maximum isometric strength of the hip abductors, knee extensors, ankle dorsiflexors, and ankle plantar flexors. | 15 minute |
| Sep 26, 2025 |
| Prot_SAP_000.pdf |
| ID | Term |
|---|---|
| D046788 | Patellofemoral Pain Syndrome |
| ID | Term |
|---|---|
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
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| ID | Term |
|---|---|
| D010208 | Papaverine |
| ID | Term |
|---|---|
| D044182 | Benzylisoquinolines |
| D000470 | Alkaloids |
| D006571 | Heterocyclic Compounds |
| D053610 | Opiate Alkaloids |
| D007546 | Isoquinolines |
| D006574 | Heterocyclic Compounds, 2-Ring |
| D000072471 | Heterocyclic Compounds, Fused-Ring |
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