Patellofemoral Pain Syndrome
Conditions
Interventions
Control group:Subjects are required to undergo a 6-week exercise intervention, with training sessions twice a week, separated by at least one day each. The training protocol consists of five exercises
if both knees are symptomatic, the more severely affected side is chosen.
Before training begins, each subject’s 1RM (one-repetition maximum) is measured and recorded. This measurement is repeated and
Sponsors
Beijing Sport University
Eligibility
Sex/Gender
All
Age
18 Years to 45 Years
Inclusion criteria
Inclusion criteria: 1. Running enthusiasts aged 18-45 with a weekly running distance >= 5 km. 2. Peripatellar or prepatellar pain lasting over 4 weeks, with a pain score >= 3. 3. Pain induced by at least two functional tasks: squatting, kneeling, prolonged sitting, stair climbing, jumping, or running. 4. Crepitus during knee flexion, tenderness on patellar palpation, and mild swelling. 5. The squat test serves as the gold standard, while other tests (e.g., patellar apprehension test, patellar compression test, seated resisted knee extension) are supplementary.
Exclusion criteria
Exclusion criteria: 1. Presence of other knee disorders, including knee osteoarthritis, meniscal tear, anterior/posterior cruciate ligament injury, knee (sub)luxation, joint effusion, knee instability, etc. 2. History of knee surgery. 3. Suspected patellar tendinopathy, particularly characterized by localized patellar tendon pain, symptom exacerbation during dynamic loading, and pain relief during sustained isometric contraction. 4. Concomitant hip or ankle pathologies, such as ankle instability, ankle sprain, femoroacetabular impingement, hip arthroplasty, etc. 5. Chronic use of non-steroidal anti-inflammatory drugs (NSAIDs) or corticosteroids. 6. Lower limb weight-bearing training within the past six months. 7. History of cardiovascular/cerebrovascular diseases, renal disorders, unexplained chest pain, hypertension ( >= 140/90 mmHg), exercise-induced dizziness/syncope, pregnancy, or other contraindications to physical activity.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Kujala Anterior Knee Pain Scale;Tampa Scale of Kinesiophobia-11; | — |
Secondary
| Measure | Time frame |
|---|---|
| Visual Analogue Scale;Maximum knee extension strength;Quadriceps Muscle Thickness;Y-Balance Test;Rating of Perceived Exertion; | — |
Countries
China
Contacts
Public ContactHe Siyi
Beijing Sport University
Outcome results
None listed