Research
Energy balance
Preexercise carbohydrate intake has little effect on metabolism during prolonged cycling when carbohydrate is ingested throughout exercise.
For practitioners, it suggests that the timing of carbohydrate intake before exercise may be less critical if carbohydrates are consumed during exercise.
StrongSupportsmedium confidence
When CHO is ingested during exercise in amounts presently recommended by sports nutrition guidelines, preexercise CHO intake has little effect on metabolism or on subsequent performance during prolonged cycling (approximately 2.5 h).
Why this rating
Based on study design from abstract.
Source
Carbohydrate intake during prolonged cycling minimizes effect of glycemic index of preexercise meal
Louise M. Burke et al. · Journal of Applied Physiology · 1998
DOI 10.1152/jappl.1998.85.6.2220
rct · n=6Cited 99×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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