An observational study in Stress, sponsored by Universität des Saarlandes. Completed at 1 site in Germany. Open to male participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2009-07-27.
Sponsored by Universität des Saarlandes · Observational
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.
Universität des Saarlandes is the lead sponsor of 64 studies on the registry; 16 are open to participants now.
Counted across the registry records on this site, refreshed daily.
soccer players of the first two German professional soccer leagues
Exclusion Criteria:
players of the first two German soccer leagues
complete blood count
Time frame: August 2008 until May 2009
numerous serum parameters from venous blood
Time frame: August 2008 until May 2009
This study is completed, as verified in Jul 2009. You cannot join it, but the record below documents what was studied.
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Universität des Saarlandes