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[Hematological variables in marathon and ultramarathon runners].

I Casoni, C Borsetto, P Droghetti

    Bollettino Della Societa Italiana Di Biologia Sperimentale
    |June 30, 1983
    PubMed
    Summary

    Intense marathon training significantly lowers haemoglobin and iron levels in athletes, a condition known as sport anemia. The severity of this decrease correlates with training volume, suggesting a direct link between training load and anemia risk.

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    International journal of laboratory hematology·2024

    Area of Science:

    • Sports Medicine
    • Exercise Physiology
    • Hematology

    Context:

    • Athletes, particularly marathon runners, often exhibit lower than normal haemoglobin concentrations.
    • Understanding the physiological impact of intensive endurance training on blood parameters is crucial for athlete health and performance.

    Purpose:

    • To investigate the effects of marathon and ultramarathon running on haemoglobin, iron concentrations, and haematocrit.
    • To explore the relationship between training volume and the development of "sport anaemia" in endurance athletes.

    Summary:

    • Haemoglobin, iron levels, and haematocrit were measured in marathon and ultramarathon runners before and after races.
    • Significant decreases in these parameters were observed, particularly in marathon runners with high training volumes (up to 260 km/week).

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  • Ultramarathon runners showed less pronounced decreases, potentially due to less intense training programs.

    • Impact:

    • Findings support the hypothesis that "sport anaemia" is directly related to the training load undertaken by athletes.
    • Highlights the importance of monitoring hematological parameters in endurance athletes to manage potential health risks associated with intense training.