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Related Experiment Videos

Nutrient intake and performance during a mountain marathon: an observational study.

Maaike Kruseman1, Sophie Bucher, Mélanie Bovard

  • 1Department of Community Medicine, Geneva University Hospitals, Switzerland. maaike.kruseman@hcuge.ch

European Journal of Applied Physiology
|February 17, 2005
PubMed
Summary

Amateur runners in a mountain marathon often failed to meet fluid and carbohydrate intake recommendations. Nutrient intake did not correlate with race performance, unlike body composition and experience.

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Area of Science:

  • Sports Nutrition
  • Exercise Physiology
  • Endurance Sports

Background:

  • Optimizing nutrient intake is crucial for endurance athletes.
  • Understanding nutritional practices during mountain marathons is essential for performance and safety.
  • Previous research has highlighted varied adherence to guidelines among endurance athletes.

Purpose of the Study:

  • To assess nutrient intake of amateur runners during a mountain marathon.
  • To evaluate compliance with established nutritional recommendations.
  • To investigate the association between nutrient intake, body composition, race experience, and performance.

Main Methods:

  • Direct observation of nutrient and fluid intake in 42 participants.
  • Questionnaires for demographics, dietary preparation, and race experience.

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  • Anthropometrical measurements before and after the race.

    • Main Results:

    • Mean hourly intakes: 545ml fluid, 31g carbohydrates, 141 kcal energy, 150mg sodium.
    • 52% consumed <30g/h carbohydrates; 95% consumed <500mg/h sodium.
    • 71% lost >3% body mass; nutrient intake did not correlate with performance.

    Conclusions:

    • Most participants did not meet recommended nutrient intake levels.
    • Body composition and race experience were linked to performance, not nutrient intake.
    • Further experimental research is needed to establish causal links between nutrient intake and performance.