Effectiveness of Isometric vs. Eccentric Exercise in Chronic Achilles Tendinopathy

NCT ID: NCT02732782

Last Updated: 2021-02-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

45 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-08-31

Study Completion Date

2020-10-30

Brief Summary

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This is a prospective single blinded randomised controlled trial with a 12-week intervention period and a half-year follow-up period. The main purpose is to determine the effects of isometric exercise on mechanical, morphological and functional tendon properties versus eccentric exercise in chronic Achilles tendinopathy.

Detailed Description

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This research project was funded by means of the "Bundesinstitut für Sportwissenschaft" based on a resolution of the German Federal Parliament.

Conditions

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Tendinopathy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Isometric exercise

Isometric exercise (90% maximum voluntary contraction (MVC), 12 weeks, 4 times a week, 5 sets of 4 repetitions a 3 seconds)

Group Type EXPERIMENTAL

Isometric exercise

Intervention Type OTHER

Eccentric exercise

Eccentric training ("Alfredson" approach, 12 weeks, 2 sets per day with extended and two sets per day with bended knee, 15 repetitions per set)

Group Type ACTIVE_COMPARATOR

Eccentric exercise

Intervention Type OTHER

Control

Control, no intervention

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Isometric exercise

Intervention Type OTHER

Eccentric exercise

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Chronic (3 months or more) condition of unilateral Achilles tendinopathy confirmed by a medical doctor based on ultrasound
* age 18-60
* male
* VISA-A Score of at least 80

Exclusion Criteria

* bilateral tendinopathy
* any systemic or inflammatory diseases (i. e. Diabetes, Arthritis)
* surgery on lower extremities in the past
* corticoid injections in the last 12 months
Minimum Eligible Age

20 Years

Maximum Eligible Age

50 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Charite University, Berlin, Germany

OTHER

Sponsor Role collaborator

Humboldt-Universität zu Berlin

OTHER

Sponsor Role lead

Responsible Party

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Goran Radovanovic

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Kirsten Legerlotz, PhD, Prof

Role: STUDY_DIRECTOR

Humboldt Universität zu Berlin, Department of Movement Sciences

Locations

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Humboldt Universität zu Berlin, Institut für Bewegungswissenschaften, Department Movement Sciences

Berlin, , Germany

Site Status

Countries

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Germany

References

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Legerlotz K, Jones ER, Screen HR, Riley GP. Increased expression of IL-6 family members in tendon pathology. Rheumatology (Oxford). 2012 Jul;51(7):1161-5. doi: 10.1093/rheumatology/kes002. Epub 2012 Feb 15.

Reference Type BACKGROUND
PMID: 22337942 (View on PubMed)

Mersmann F, Bohm S, Schroll A, Boeth H, Duda GN, Arampatzis A. Muscle and tendon adaptation in adolescent athletes: A longitudinal study. Scand J Med Sci Sports. 2017 Jan;27(1):75-82. doi: 10.1111/sms.12631. Epub 2015 Dec 8.

Reference Type BACKGROUND
PMID: 26644277 (View on PubMed)

Arampatzis A, Karamanidis K, Mademli L, Albracht K. Plasticity of the human tendon to short- and long-term mechanical loading. Exerc Sport Sci Rev. 2009 Apr;37(2):66-72. doi: 10.1097/JES.0b013e31819c2e1d.

Reference Type BACKGROUND
PMID: 19305197 (View on PubMed)

Radovanovic G, Bohm S, Peper KK, Arampatzis A, Legerlotz K. Evidence-Based High-Loading Tendon Exercise for 12 Weeks Leads to Increased Tendon Stiffness and Cross-Sectional Area in Achilles Tendinopathy: A Controlled Clinical Trial. Sports Med Open. 2022 Dec 20;8(1):149. doi: 10.1186/s40798-022-00545-5.

Reference Type DERIVED
PMID: 36538166 (View on PubMed)

Other Identifiers

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AZ: ZMV14-070102/16-17

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

PR020151100167

Identifier Type: -

Identifier Source: org_study_id

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