Exogenous Oxidation of Fructose-glucose Mixtures During Running

Examining Exogenous Carbohydrate Oxidation From Glucose, Multiple Transportable Carbohydrates and Hydrogel Carbohydrate Drinks During Endurance Running

The aim of this study is to characterise exogenous carbohydrate oxidation rates during exercise, when ingesting glucose (polymers) only, compared to glucose-fructose mixtures, and glucose-fructose mixtures ingested in hydrogel form.

Inclusion Criteria:

• Maximal oxygen consumption > 50 ml.kg-1.min-1
• > 1 year training in endurance running or triathlon
• No current injury or injury within the last three months
• No history of cardiac or metabolic disease such as coronary heart disease or diabetes
• No current or history of gastrointestinal issues
• Successful completion of the physical activity readiness questionnaire (PAR-Q)

Exclusion Criteria:

• Female
• Untrained in endurance running
• Current injury or injury within the past three months
• History of cardiac or metabolic disease such as coronary heart disease or diabetes
• History of or current gastrointestinal issues such as irritable bowel syndrome
• Unable to replicate diet and training for 3 and 5 days respectively prior to each experimental visit.