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Related Experiment Video

Updated: Jul 5, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Nutritional intake during a simulated adventure race.

Ioná Zalcman Zimberg1, Cebele Aparecida Crispim, Claudia Ridel Juzwiak

  • 1Exercise and Psychobiology Research Center, Federal University of Sao Paulo, Brazil.

International Journal of Sport Nutrition and Exercise Metabolism
|May 7, 2008
PubMed
Summary

Adventure racers consumed fewer calories than they expended during a 67-hour laboratory simulation. Their carbohydrate intake was insufficient, highlighting a need for specific nutritional guidelines for endurance events.

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Nutritional Science

Background:

  • Adventure racing is a demanding endurance sport requiring significant energy expenditure.
  • Understanding athlete nutrition during prolonged events is crucial for performance and health.

Purpose of the Study:

  • To quantify the food and energy intake of elite adventure racers during a simulated multiday competition.
  • To compare energy expenditure with energy intake and assess macronutrient consumption patterns.

Main Methods:

  • Ten experienced male adventure racers participated in a 67-hour laboratory-simulated race.
  • Food intake was meticulously recorded throughout the entire duration of the event.
  • Energy expenditure and intake were calculated, with a focus on macronutrient sources.

Main Results:

  • Total energy expenditure (24,516 kcal) significantly exceeded total energy intake (14,738 kcal).
  • Athletes derived more energy from food sources compared to nutritional supplements.
  • Carbohydrate intake (g/kg/hr) fell below recommended levels for prolonged endurance activities.

Conclusions:

  • Adventure racers experience a substantial energy deficit during prolonged, high-intensity events.
  • Current dietary intake, particularly carbohydrate consumption, may be inadequate for the demands of multiday adventure racing.
  • Evidence-based nutritional guidelines are necessary to support athletes in this discipline.