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Related Experiment Video

Updated: May 17, 2026

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

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[Effects of headers on coagulation parameters].

C Raschka¹, L Klüglein

¹Institut für Sportwissenschaft der Julius-Maximilians-Universität Würzburg. craschka@gmx.de

MMW Fortschritte Der Medizin

|November 9, 2012

Summary

Soccer headers may cause micro-trauma, indicated by changes in blood markers. This study found significant differences in leucocyte and thrombocyte counts, suggesting a stress response and activation of coagulation systems after heading drills.

Area of Science:

Sports medicine
Hematology
Biomechanics

Context:

Heading a soccer ball is a common action in the sport.
Potential for repetitive head impacts raises concerns about player safety.
Previous research has explored head injury risks, but specific micro-trauma from heading requires further investigation.

Purpose:

To investigate the hypothesis that soccer headers induce measurable micro-trauma.
To assess the effects of repetitive heading on blood coagulation parameters.
To evaluate physiological responses to heading in a controlled laboratory setting.

Summary:

Twenty-two soccer players performed intensive heading drills for eight minutes using a standard ball.
Blood samples were analyzed for changes in coagulation parameters, including leucocytes, thrombocytes, fibrinogen, INR, Quick, and activated partial thromboplastin time (aPTT).

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A Novel In vitro Model for Studying the Interactions Between Human Whole Blood and Endothelium

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Significant increases in leucocytes and thrombocytes were observed, alongside a significant reduction in aPTT, indicating stress and activation of coagulation systems.

Impact:

Findings suggest that soccer headers can induce physiological stress and micro-trauma.
The study provides objective hematological evidence of the body's response to repetitive heading.
Results contribute to understanding the potential long-term health implications for soccer players and inform safety protocols.