Guidelines for Daily Carbohydrate Intake: Do Athletes Achieve Them? (Burke 2001 review)
Main caveat: Narrative review from 2001; the "train-low" and carbohydrate-periodisation literature that qualifies blanket high-carbohydrate advice came afterwards.
Overview
Burke and colleagues review the official guidelines recommending high carbohydrate intakes in athletes' routine/training diets, the criticism that they lack proof of superior training adaptation and that successful athletes do not follow them, and the dietary-survey literature on what athletes actually eat.
Their central methodological point: expressing carbohydrate targets as a percentage of dietary energy is misleading; targets should be given in grams per kilogram body mass, letting the athlete meet them within their energy needs and other dietary goals.
Key Findings
Suggested routine carbohydrate intake: 5 to 7 g/kg/day to cover general training, rising to 7 to 10 g/kg/day where endurance athletes have higher needs.
Dietary-survey methods have limitations — under-reporting and under-eating during the survey period must be taken into account when judging adequacy.
A typical male athlete achieves carbohydrate intake within the recommended range on a g/kg basis; individuals may still need education or counselling to fine-tune it.
Female athletes, particularly endurance athletes, are less likely to meet the guidelines, because of chronic or periodic energy restriction to reach or hold low body fat; professional counselling can help balance weight control and fuel intake.
The real or apparent failure of top athletes to hit the recommended intakes does not invalidate the guidelines; longitudinal studies of adaptation and performance on high versus moderate carbohydrate intakes were still needed. Meanwhile, the recommendations rest on plentiful evidence that increased carbohydrate availability enhances endurance and performance in single sessions.
Practical Application
Burke 2001 (review of athlete dietary surveys): set daily carbohydrate in grams per kilogram, not as a percentage of energy — 5-7 g/kg/day for general training and 7-10 g/kg/day for endurance athletes; typical male athletes already land in that range, while female endurance athletes often fall short because they restrict total energy to stay lean.
If recovery is poor despite sensible training, check daily carbohydrate against the g/kg target before blaming the training load — and in women especially, check whether total energy is being restricted.
Do not read "champions don't eat that much carbohydrate" as evidence against the guidelines: the review shows the survey data are error-prone and that athletes' shortfalls are a counselling problem, not a refutation.
Not from this paper: protein and micronutrient targets, and carbohydrate periodisation across the training year, are covered in REF-017 and REF-055.
Limitations
Narrative review from 2001; the "train-low" and carbohydrate-periodisation literature that qualifies blanket high-carbohydrate advice came afterwards.
Relies on dietary-survey data the authors themselves flag as biased by under-reporting and under-eating.
The direct evidence that high versus moderate daily carbohydrate improves training adaptation was, by the authors' own account, still lacking.
How this entry was checked and changed
Why this level
regraded 2026-11-03 from B (scale v2): narrative review without a systematic method
Content correction 2026-09-27
"Athletes with adequate nutrition (5-7 g CHO/kg/day, 1.5-2.0 g protein/kg/day) showed 12-18% better recovery and adaptation" -> invented; the abstract reports no such comparison. Protein targets, "common deficiencies (iron, calcium, vitamin D)" and "iron especially in female athletes" are not in the abstract; removed.
Added the paper's actual content: g/kg rather than %-energy targets; 5-7 g/kg/day general and 7-10 g/kg/day endurance; typical male athletes meet them, female endurance athletes often do not because of energy restriction; survey-method caveats.
Title "Dietary Habits of Athletes: Comprehensive Review" -> the paper's title; house daily targets (5-6 g/kg, 1.6-1.8 g protein/kg) removed.
DOI line added: 10.2165/00007256-200131040-00003 is the DOI in the PubMed record of this entry's PMID 11310548 (same title and authors).