Knee Strengthening With Hip vs. Ankle Exercises in Women With Patellofemoral Pain Syndrome
- Conditions
- Patellofemoral Pain SyndromeAnterior Knee PainExercise Therapy
- Registration Number
- NCT07210060
- Brief Summary
Eight weeks of telehealth-based supervised exercise effectively reduced DKV and pain in women with anterior knee pain. Both intervention groups demonstrated comparable benefits.
- Detailed Description
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.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Female
- Target Recruitment
- 45
- Female recreational athletes aged 20-40 years who engage in regular exercise
- Experiencing pain in the anterior or surrounding patella during at least two or more of the following activities: walking, running, jumping, kneeling, squatting, climbing stairs, or prolonged sitting
- A pain index of 3 or higher on the Numeric Pain Rating Scale (NPRS) and symptoms persisting for at least 3 months
- Knee pain unrelated to trauma.
- Inability to operate a smartphone or computer
- History of fractures or surgeries involving the hip, knee, ankle, or foot
- History of meniscus, knee ligament injuries, or ankle sprains within the last six months
- Knee ligament laxity, inflammation, swelling, patellar dislocation, or subluxation
- Cognitive impairment or inability to follow simple instructions
- History of cardiovascular or neurological disorders
- Advised by a physician to avoid exercise. Use of over-the-counter pain medication was not an exclusion criterion.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Single Leg Landing Task 2 minute 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.
- Secondary Outcome Measures
Name Time Method Numeric Pain Rating Scale 1 minute 0 indicates no pain and 10 indicates the worst pain imaginable.
Patellar Tendon Stiffness Measurement 3 minute The stiffness of the patellar tendon was assessed using a handheld device (MyotonPRO; Tallinn, Estonia).
Muscle structure 15 minute 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.
Ankle Joint ROM 3 minute used a weight-bearing lunge test to measure the active dorsiflexion angle of the ankle during weight-bearing.
Maximum Voluntary Isometric Strength 15 minute 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.
Trial Locations
- Locations (1)
Nai-Jen Chang
🇨🇳Tainan City, Kaohsiung City, Taiwan
Nai-Jen Chang🇨🇳Tainan City, Kaohsiung City, Taiwan