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

This study has been completed.
Sponsor:
Information provided by:
Saarland University
ClinicalTrials.gov Identifier:
NCT00946855
First received: July 24, 2009
Last updated: NA
Last verified: July 2009
History: No changes posted

July 24, 2009
July 24, 2009
August 2008
May 2009   (final data collection date for primary outcome measure)
complete blood count [ Time Frame: August 2008 until May 2009 ] [ Designated as safety issue: No ]
Same as current
No Changes Posted
numerous serum parameters from venous blood [ Time Frame: August 2008 until May 2009 ] [ Designated as safety issue: No ]
Same as current
Not Provided
Not Provided
 
Effect of Elite Soccer Training on Routine Laboratory Parameters
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.

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.

Observational
Observational Model: Cohort
Time Perspective: Prospective
Not Provided
Retention:   Samples Without DNA
Description:

iced serum samples

Non-Probability Sample

soccer players of the first two German professional soccer leagues

Stress
Not Provided
soccer players
players of the first two German soccer leagues
Meyer T, Meister S. Routine blood parameters in elite soccer players. Int J Sports Med. 2011 Nov;32(11):875-81. doi: 10.1055/s-0031-1280776. Epub 2011 Oct 21.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
467
July 2009
May 2009   (final data collection date for primary outcome measure)

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
Male
18 Years to 40 Years
Yes
Contact information is only displayed when the study is recruiting subjects
Germany
 
NCT00946855
Soccer laboratory values
No
Prof. Dr. med. Tim Meyer, Institute of Sports and Preventive Medicine, University of Saarland, Campus Bldg. B 8-2, 66123 Saarbrücken, Germany
Saarland University
Not Provided
Principal Investigator: Tim Meyer, MD, PhD Institute of Sports and Preventive Medicine, University of Saarland, Campus, Bldg. B 8-2, 66123 Saarbrücken, Germany
Saarland University
July 2009

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP