Considerations for ultra-endurance activities: part 1- nutrition Extreme endurance loads are unique challenges that can be enhanced beyond the fatigue through sub-optimal diet during elevated requirements and impaired gastrointestinal function. The fatigue causes of extreme expenses are multifactorially conditioned. However, mechanisms may include central or peripheral fatigue, thermal stress, dehydration and / or exhaustion of the endogenous glycogen storage. If the extreme duration load is long enough (eg ≥ 10 hours) and the intensity is low enough (eg 45-60% of maximum oxygen uptake), it is bioenergetically plausible that the ketogenic adjustment of the extreme duration load to improve. Conversely, scientific literature has repeatedly shown that daily reception of carbohydrates (3-12 g / kg / day) and carbohydrate absorption under load (30-110 g / h) can improve performance with extreme expenses loads. In view of the gastrointestinal symptoms that are common in extreme expenses, effective prevention and treatment strategies for diet can provide functional, histological, systemic and symptomatic advantages.
All in all, a proven and individualized energy supply is required to optimize performance in extreme duration loads. The interesting article can be found under https://pubmed.ncbi.nlm.nih.gov/30056753/