Effect of Elite Soccer Training on Routine Laboratory Parameters (SOCCERLAB)

July 24, 2009 updated by: Universität des Saarlandes

Laboratory Values in Elite Soccer Players

Repeated blood sampling within a regular soccer season of German first league clubs shall serve to define soccer-specific reference values for routine parameters determined from venous blood. It was hypothesized that only for a minor number of parameters common reference values will have to be adapted for soccer players during their competitive season.

Study Overview

Status

Completed

Conditions

Detailed Description

It is often difficult to discern exercise-induced changes in laboratory parameters from pathological changes in elite athletes during the regular training process. This is particularly true in soccer players who compete more often than many other athletes. Therefore, soccer players of the first two German soccer leagues (all professional athletes) are recruited for repeated blood sampling during the season (4 sampling times, one of them immediately before training commences in the summer, the other ones in October/November, February/March, and April/May). Among other standardizing requirements, it is mandatory that precisely one training session (not zero, not two, no competition) takes place the day before sampling. Several confounders for the interpretation of laboratory results are verified by means of a questionnaire. Phases of high competitive stress are compared with those of low stress. The course of the parameters as well as confidence intervals for given times during the season are of main interest.

Study Type

Observational

Enrollment (Actual)

467

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Germany
    • Saarland
      • Saarbrücken, Saarland, Germany, 66123
        • Institute of Sports and Preventive Medicine, University of Saarland, Campus, Bldg. B 8-2,

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 40 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Sampling Method

Non-Probability Sample

Study Population

soccer players of the first two German professional soccer leagues

Description

Inclusion Criteria:

  • being employed as player by a club of the first two German soccer leagues
  • healthy

Exclusion Criteria:

  • chronic disease interfering with one or more of the determined parameters

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
soccer players
players of the first two German soccer leagues

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
complete blood count
Time Frame: August 2008 until May 2009
August 2008 until May 2009

Secondary Outcome Measures

Outcome Measure
Time Frame
numerous serum parameters from venous blood
Time Frame: August 2008 until May 2009
August 2008 until May 2009

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Universität des Saarlandes

Investigators

  • Principal Investigator: Tim Meyer, MD, PhD, Institute of Sports and Preventive Medicine, University of Saarland, Campus, Bldg. B 8-2, 66123 Saarbrücken, Germany

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2008

Primary Completion (Actual)

May 1, 2009

Study Completion (Actual)

July 1, 2009

Study Registration Dates

First Submitted

July 24, 2009

First Submitted That Met QC Criteria

July 24, 2009

First Posted (Estimate)

July 27, 2009

Study Record Updates

Last Update Posted (Estimate)

July 27, 2009

Last Update Submitted That Met QC Criteria

July 24, 2009

Last Verified

July 1, 2009

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • Soccer laboratory values

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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