The Mechanical,Physiological and Therapeutic Effects of Eccentric Exercise Combined With Extracorporeal Shockwave Therapy in Athletes With Patellar Tendinopathy
- Conditions
- Patellar Tendinopathy
- Interventions
- Behavioral: Eccentric exercise
- Registration Number
- NCT04650997
- Lead Sponsor
- The Hong Kong Polytechnic University
- Brief Summary
Patellar tendinopathy is one of the most common injuries in jumping athletes. Changes in mechanical and physiological properties of tendon are the two proposed forms of pathogenesis. The efficacy of eccentric exercise when applied alone and combined with extrocoporeal shockwave therapy had been reported; however, the underlying treatment mechanisms of pain and dysfunction are not clear. This project aimed to explore the mechanical, physiological and therapeutic effects of eccentric exercise when applied as a single treatment and as an adjunct to extracorporeal shockwave therapy.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 43
- Competitive athletes
- Pain at the inferior pole of the patella with training for at least 3 months
- Tenderness at the inferior pole of the patella on palpation
- Patellofemoral pain syndrome, fat pad irritations, meniscus injury, osteoarthritis, rheumatoid arthritis or infections
- History of fracture over lower limbs and inflammatory myopathies
- Cortisone injuection and other interventions within 3 months
- Contraindication to extracorporeal shockwave therapy
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Combined Eccentric exercise 12 weeks eccentric exercise combined with 6 sessions of extracorporeal shockwave therapy in the initial 6 weeks Exercise Eccentric exercise 12 weeks eccentric exercise combined with 6 sessions of sham extracorporeal shockwave therapy in the initial 6 weeks
- Primary Outcome Measures
Name Time Method Tendon stress in pascals at baseline Before intervention Tendon stress measured by ultrasonography and dynamometry
Change of tendon stress in pascals at 16 weeks 16 weeks Tendon stress measured by ultrasonography and dynamometry
Tendon vascularity index as percentage at baseline Before intervention Tendon vascularity measured by power doppler ultrasonography
Change of tendon vascularity index as percentage at 12 weeks 12 weeks Tendon vascularity measured by power doppler ultrasonography
Change of tendon stress in pascals at 12 weeks 12 weeks Tendon stress measured by ultrasonography and dynamometry
Change of tendon vascularity index as percentage at 16 weeks 16 weeks Tendon vascularity measured by power doppler ultrasonography
- Secondary Outcome Measures
Name Time Method Tendon related pain on visual analogy scale at baseline Before intervention Maximal intensity of self-perceived pain in the past 7 days, pain during single-leg declined-squat test
Change of tendon related pain on visual analogy scale at 12 weeks 12 weeks Maximal intensity of self-perceived pain in the past 7 days, pain during single-leg declined-squat test
Change of tendon related pain on visual analogy scale at 16 weeks 16 weeks Maximal intensity of self-perceived pain in the past 7 days, pain during single-leg declined-squat test
Tendon related dysfunction by questionnaire at baseline Before intervention Victorian Institute of Sport Assessment Questionnaire - Patellar Tendon
Change of tendon related dysfunction by questionnaire at 12 weeks 12 weeks Victorian Institute of Sport Assessment Questionnaire - Patellar Tendon
Change of tendon related dysfunction by questionnaire at 16 weeks 16 weeks Victorian Institute of Sport Assessment Questionnaire - Patellar Tendon