Investigation of Cardiac Function and Cardiovascular Risk Factors in Marathon Runners- The Munich Marathon Study (MMS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00500773
Recruitment Status : Completed
First Posted : July 13, 2007
Last Update Posted : May 1, 2014
Ludwig-Maximilians - University of Munich
Information provided by:
Technische Universität München

Brief Summary:
The purpose of this study is to determine the cardiovascular risk involved in the exertional exercise of marathon running. The researchers aim to investigate the beneficial effects of regular well-dosed exercise on health and compare these findings with the effects of the extreme strains of marathon running. Subclinical injuries to heart and arteries are being investigated in different groups of runners, including obese participants.

Condition or disease
Modes of Exercise and Myocardial and Endothelial Function Microcirculation Subclinical Endorgan Damage Obesity

Detailed Description:

Regular exercise leads to an improvement of cardiovascular risc factors in patients with coronary heart disease, atherosclerosis and metabolic disorders. Aerobic exercise has anti-inflammatory effects. In contrast, the exertional exercise of marathon running causes an acute pro-inflammatory impulse. This may lead to myocardial injury and, in case of preexisting plaques, may result in plaque rupture and acute myocardial infarction.

The researchers aim to define the critical role of inflammatory markers and cardiovascular risk factors as a predictor of an increased risk for myocardial and endothelial dysfunction in marathon runners.

The study groups are divided into average trained runners (40 km/week), average trained obese runners and highly trained runners (> 70km/week). Training programmes are supervised by professional coaches. Individual scientific marathon contests are organized for the assessments.

Diagnostic tools include measurements of pulse wave velocity and heart rate turbulence, echocardiography and, for the first time, MRI-scans pre- and post marathon running. Additionally, cardiovascular markers such as endothelial progenitor cells (EPCs)and adiponectin are measured. Inflammatory markers include c-reactive protein (CRP), interleukins and tumor necrosis factor.

Study Type : Observational
Actual Enrollment : 60 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Investigation of Myocardial Injury, Ventricular Dysfunction and Cardiovascular Risk Factors in Different Groups of Marathon Runners
Study Start Date : July 2007
Actual Primary Completion Date : March 2008
Actual Study Completion Date : May 2008

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Ages Eligible for Study:   30 Years to 60 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Healthy male marathon runners with no more than one treated cardiovascular risk factor aged 30-60 years. Participation of at least a 1/2 marathon in recent history.

Inclusion Criteria:

  • Men aged 30-60 years
  • Obese subjects: BMI > 27 and waist circumference > 102cm

Exclusion Criteria:

  • manifested heart disease
  • insulin dependent diabetes mellitus
  • multiple drug therapy
  • GFR < 60 ml/min.
  • claustrophobia
  • metal implants

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00500773

Department of Prevention and Sportsmedicine, Technical University of Munich
Connollystrasse 32, Munich, Bavaria, Germany, 80809
Sponsors and Collaborators
Technische Universität München
Ludwig-Maximilians - University of Munich
Principal Investigator: Henner Hanssen, MD Department of Prevention and Sportmedicine, Technical University Munich

Additional Information:
Responsible Party: Dr. med. Henner Hanssen, Lehrstuzl für Praeventive und rehabilitative Sportmedizin Identifier: NCT00500773     History of Changes
Other Study ID Numbers: 1807/07
First Posted: July 13, 2007    Key Record Dates
Last Update Posted: May 1, 2014
Last Verified: April 2014

Keywords provided by Technische Universität München:
cardiovascular risc factors
aerobic and exertional exercise