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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
43
Knee eccentric exercise with sham or focused extrocorporeal shockwave therapy for 12 weeks
Tendon stress in pascals at baseline
Tendon stress measured by ultrasonography and dynamometry
Time frame: Before intervention
Change of tendon stress in pascals at 12 weeks
Tendon stress measured by ultrasonography and dynamometry
Time frame: 12 weeks
Change of tendon stress in pascals at 16 weeks
Tendon stress measured by ultrasonography and dynamometry
Time frame: 16 weeks
Tendon vascularity index as percentage at baseline
Tendon vascularity measured by power doppler ultrasonography
Time frame: Before intervention
Change of tendon vascularity index as percentage at 12 weeks
Tendon vascularity measured by power doppler ultrasonography
Time frame: 12 weeks
Change of tendon vascularity index as percentage at 16 weeks
Tendon vascularity measured by power doppler ultrasonography
Time frame: 16 weeks
Tendon related pain on visual analogy scale at baseline
Maximal intensity of self-perceived pain in the past 7 days, pain during single-leg declined-squat test
Time frame: Before intervention
Change of tendon related pain on visual analogy scale at 12 weeks
Maximal intensity of self-perceived pain in the past 7 days, pain during single-leg declined-squat test
Time frame: 12 weeks
Change of tendon related pain on visual analogy scale at 16 weeks
Maximal intensity of self-perceived pain in the past 7 days, pain during single-leg declined-squat test
Time frame: 16 weeks
Tendon related dysfunction by questionnaire at baseline
Victorian Institute of Sport Assessment Questionnaire - Patellar Tendon
Time frame: Before intervention
Change of tendon related dysfunction by questionnaire at 12 weeks
Victorian Institute of Sport Assessment Questionnaire - Patellar Tendon
Time frame: 12 weeks
Change of tendon related dysfunction by questionnaire at 16 weeks
Victorian Institute of Sport Assessment Questionnaire - Patellar Tendon
Time frame: 16 weeks
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