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Completed

NCT Number: NCT00946855

Effect of Elite Soccer Training on Routine Laboratory Parameters

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.

Completed

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Key information

Conditions

Stress Behavior Motor Activity

Age range

18 year–40 year

Sex eligibility

Male

Study type

Observational

Primary location

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

Saarbrücken, Saarland, 66123, Germany

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Primary outcomes

  1. complete blood count

    Time frame: August 2008 until May 2009

Secondary outcomes

  1. numerous serum parameters from venous blood

    Time frame: August 2008 until May 2009

Sponsors and collaborators

Lead sponsor

Universität des Saarlandes

Other

Registry information

Official study title

Laboratory Values in Elite Soccer Players

Acronym: SOCCERLAB

Important dates

Study start
2008
Primary completion
2009
Study completion
2009
First posted
Jul 27, 2009
Registry last updated
Jul 27, 2009

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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