DIET, SUPPLEMENTATION, PERFORMANCE, AND SUBJECTIVE EXPERIENCE IN MARATHON RUNNERS
Luisina Andrea Capone, María Victoria Muscia, Diego Nicolás Messina · SOUTHERN JOURNAL OF SCIENCES · 2026
Background: Nutrition strategies may influence marathon performance and runners’ subjective experience.
Aims: To evaluate the association between dietary habits, supplement use, performance, and subjective experience in runners of the 2025 Mendoza International Marathon.
Methods: A survey of 240 runners from the 2025 Mendoza International Marathon examined dietary habits, supplement use, performance, and subjective experience.
Results: Nutritional counseling was linked to more favorable perceptions. Conversely, pre-race alcohol and excessive carbohydrates with poor hydration increased gastrointestinal complaints. Supplements showed no measurable performance or well-being benefits. Discussions: These
Findings: suggest that pre-race nutritional behaviors may have a greater influence on runners’ subjective experience than supplement use.
Conclusions: Nutritional guidance