Trial document




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  DRKS00000406

Trial Description

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Title

Influence of fatigue on rearfoot motion, foot-loading and muscle activity in runners with Achilles tendinopathy

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Trial Acronym

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URL of the Trial

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Brief Summary in Lay Language

Besides swimming and walking, running is a healthy activity which positively affects the cardiovascular system and is therefore beneficial in prevention and rehabilitation of diseases. However, especially runners may suffer for various reasons from pain in their Achilles tendon, the so-called Achilles tendinopathy. This overload injury is common in sports and causes costs for the health care system, because the injury often takes a chronic progress. The treatment may become frustrating for the athlete and the physician and might call for surgical treatment which not always leads to an improvement of symptoms. It is assumed that the range of rearfoot motion in the frontal plane, especially an internal buckling of the ankle during running, may be responsible for the development of discomfort. However, results from a comparative study concerning the rearfoot motion with symptomatic and asymptomatic runners do not exist. Furthermore, the effect of a submaximal long-distance run on rearfoot motion, foot-loading and muscle activity in runners with Achilles tendinopathy has not been investigated. Therefore, the aim of this study is an analysis of these parameters which compares symptomatic and asymptomatic runners before as well as after a long-distance run.

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Brief Summary in Scientific Language

Achilles tendinopathy is considered to be a degenerative overuse injury of the Achilles tendon (Clement et al. 1984, Langberg et al. 2007, Öhberg et al. 2004). Obviously, Achilles tendinopathy is a multifactorial problem (Hirschmüller et al. 2005, Hüfner et al. 2007, Wünnemann & Rosenbaum 2009). Some studies found strength deficits and altered muscle- and movement patterns in patients with a symptomatic Achilles tendon (Azevedo et al. 2008, Hirschmüller et al. 2005, Kaufman et al. 1999). Fatigue after sport activities may cause biomechanical as well as neuromuscular adaptations (Brüggemann et al. 1995, Weist et al. 2004) that are considered to be a potential reason for Achilles tendinopathy. However, no study investigated the relationship between Achilles tendinopathy and running biomechanics. Therefore, potential for prevention and early diagnosis is limited. The aim of the present study is to compare the influence of a fatiguing exercise (10 km running) on rearfoot motion, muscle activity and foot loading between runners with Achilles tendinopathy and asymptomatic runners.

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Organizational Data

  •   DRKS00000406
  •   2010/05/12
  •   [---]*
  •   yes
  •   Approved
  •   2009-132-f-S, Ethik-Kommission der Ärztekammer Westfalen-Lippe und der med. Fakultät der Westfälischen Wilhelms-Universität Münster
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Secondary IDs

  •   U1111-1114-8350 
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Health Condition or Problem studied

  •   M76.6 -  Achilles tendinitis
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Interventions/Observational Groups

  •   Experimental group: Runenrs with Achilles tendon problems
  •   Controll group: Runners without Achilles tendon problems
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Characteristics

  •   Interventional
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  •   Non-randomized controlled trial
  •   Open (masking not used)
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  •   Active control
  •   Diagnostic
  •   Parallel
  •   N/A
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Primary Outcome

Changes in rearfoot motion during treadmill-running after a 10 km run; instrument: mechanical goniometer; measurement: before and after a 10 km run

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Secondary Outcome

- Changes in muscle activities of the shank muscles during treadmill running after a 10 km run; instrument: Electromyography (Noraxon); measurement: before and after a 10 km run
- Changes in plantar pressures during walking after a 10 km run; instrument: EMED platform; measurement: before and after a 10 km run

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Countries of Recruitment

  •   Germany
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Locations of Recruitment

  • [---]*
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Recruitment

  •   Planned
  •   2010/07/01
  •   70
  •   Monocenter trial
  •   National
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Inclusion Criteria

  •   Both, male and female
  •   18   Years
  •   60   Years
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Additional Inclusion Criteria

- Healthy subjects apart from the Achilles tendinopathy
- Experienced runners with at least 2 years of regular running. Recruitment though local running groups and clubs.

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Exclusion Criteria

- Cardiovascular disease
- Neurological disease
- Systemic diseases, e.g. Diabetes, Rheumatoid Arthritis
- Current pain that prevents from running 10 km

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Addresses

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    • Funktionsbereich Bewegungsanalytik Klinik und Poliklinik für Allgemeine Orthopädie und Tumororthopädie Universitätsklinikum Münster
    • Mr.  Prof. Dr.  Dieter  Rosenbaum 
    • Domagkstr. 3
    • 48149  Münster
    • Germany
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    • Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie und Tumororthopädie, Universitätsklinikum Münster
    • Mr.  Prof. Dr.  Dieter  Rosenbaum 
    • Domagkstr. 3
    • 48149  Münster
    • Germany
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    • Funktionsbereich Bewegungsanalytik Klinik und Poliklinik für Allgemeine Orthopädie und Tumororthopädie Universitätsklinikum Münster
    • Mr.  Martin  Wünnemann 
    • Domagkstr. 3
    • 48149  Münster
    • Germany
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Sources of Monetary or Material Support

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    • Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie und Tumororthopädie, Universitätsklinikum Münster
    • Mr.  Prof. Dr.  Dieter  Rosenbaum 
    • Domagkstr. 3
    • 48149  Münster
    • Germany
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Status

  •   Recruiting planned
  •   [---]*
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Trial Publications, Results and other Documents

  •   (1) Petersen W, Welp R, Rosenbaum D: Chronic Achilles Tendinopathy. A Prospective Randomized Study Comparing the Therapeutic Effect of Eccentric Training, the AirHeel Brace, and a Combination of Both. Am J Sports Med 35 (2007) 1659-1667.
    (2) Weist R, Eils E, Rosenbaum D: The Influence of Muscle Fatigue on Electromyogram and Plantar Pressure Patterns as an Explanation for the Incidence of Metatarsal Stress Fractures. Am J Sports Med 32 (2004) 1893-1898.
    (3) Wünnemann M, Rosenbaum D: Chronische Tendinopathie der Achillessehne - Ein multifaktorielles Beschwerdebild. Dtsch Z Sportmed 11 (2009) 339-344.
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* This entry means the parameter is not applicable or has not been set.