Fulltext

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

Kruseman, Maaike ; Bucher, Sophie ; Bovard, Mélanie ; Kayser, Bengt ; Bovier, Patrick

In: European Journal of Applied Physiology, 2005, vol. 94, no. 1-2, p. 151-157

Ajouter à la liste personnelle
    Titre
    • Nutrient intake and performance during a mountain marathon: an observational study
    Auteur
    • Kruseman, Maaike. Department of Community Medicine, Geneva University Hospitals, 24 rue Micheli-du-Crest, 1211, Geneva, Switzerland
    • Bucher, Sophie. School of Dieticians, Geneva, Switzerland
    • Bovard, Mélanie. School of Dieticians, Geneva, Switzerland
    • Kayser, Bengt. Institute of Movement Sciences and Sports Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
    • Bovier, Patrick. Department of Community Medicine, Geneva University Hospitals, 24 rue Micheli-du-Crest, 1211, Geneva, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • European Journal of Applied Physiology, 2005, vol. 94, no. 1-2, p. 151-157. Springer-Verlag
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:318614
    Summary
    In order to study nutrient intake of amateur runners during a mountain marathon, compliance with recommendations, and association with performance, an intake of 42 participants in a Swiss mountain marathon was assessed by direct observation. Data on demographics, dietary preparation and race experience were obtained by questionnaires. Anthropometrical measures were performed before and after the race. Mean hourly intakes (SD) of fluid, carbohydrate, energy and sodium were 545 (158)ml, 31 (14)g, 141 (63)kcal [or 590 (264)kJ], and 150 (203)mg respectively. A third of the runners drank 600mlh−1 or more, 52% consumed less than 30gh−1 carbohydrates, 95% consumed less than 500mgh−1 sodium. Mean weight loss was 4 (1.5)kg; 30 runners (71%) lost over 3% body mass. Mean running time was 7h 3min (1h17min). Most participants failed to meet nutritional recommendations. None were at risk of overhydration. Body composition and race experience were correlated with performance, but not nutrient intake. Because experienced runners are well trained, fitter, and know better their personal needs during such a race, it is difficult to disentangle these associations. As causal relationship cannot be proven with this cross-sectional design, non-compliance with intake recommendations requires additional experimental research on the impact of nutrient intake on field performance