The Mechanical,Physiological and Therapeutic Effects of Eccentric Exercise Combined With Extracorporeal Shockwave Therapy in Athletes With Patellar Tendinopathy

NCT04650997 | Completed

• 1 other identifier: HSEARS20110215003
• Study Type: interventional
• Target: 43
• Locations: 0 countries
• Sites: N/A

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.

Conditions

Patellar Tendinopathy

Outcome Measures

Primary Outcomes (6)

• Tendon stress in pascals at baseline

  Tendon stress measured by ultrasonography and dynamometry

  Before intervention

• Change of tendon stress in pascals at 12 weeks

  Tendon stress measured by ultrasonography and dynamometry

  12 weeks

• Change of tendon stress in pascals at 16 weeks

  Tendon stress measured by ultrasonography and dynamometry

  16 weeks

• Tendon vascularity index as percentage at baseline

  Tendon vascularity measured by power doppler ultrasonography

  Before intervention

• Change of tendon vascularity index as percentage at 12 weeks

  Tendon vascularity measured by power doppler ultrasonography

  12 weeks

• Change of tendon vascularity index as percentage at 16 weeks

  Tendon vascularity measured by power doppler ultrasonography

  16 weeks

Secondary Outcomes (6)

• Tendon related pain on visual analogy scale at baseline

  Before intervention

• Change of tendon related pain on visual analogy scale at 12 weeks

  12 weeks

• Change of tendon related pain on visual analogy scale at 16 weeks

  16 weeks

• Tendon related dysfunction by questionnaire at baseline

  Before intervention

• Change of tendon related dysfunction by questionnaire at 12 weeks

  12 weeks

Study Arms (2)

Combined

EXPERIMENTAL

12 weeks eccentric exercise combined with 6 sessions of extracorporeal shockwave therapy in the initial 6 weeks

Behavioral: Eccentric exercise

Exercise

SHAM COMPARATOR

12 weeks eccentric exercise combined with 6 sessions of sham extracorporeal shockwave therapy in the initial 6 weeks

Behavioral: Eccentric exercise

Interventions

Eccentric exercise BEHAVIORAL

Knee eccentric exercise with sham or focused extrocorporeal shockwave therapy for 12 weeks

Also known as: Extracoporeal shockwave therapy (Minilith SL1, Storz Medical)

Combined; Exercise

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• 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

You may not qualify if:

• 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

Sponsors & Collaborators

• The Hong Kong Polytechnic University: lead

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 30, 2020
• First Posted: December 3, 2020
• Study Start: February 16, 2011
• Primary Completion: January 1, 2014
• Study Completion: January 1, 2014
• Last Updated: December 3, 2020

Record last verified: 2011-02

Data Sharing

• IPD Sharing: Will not share