Japanese male endurance runners tend to eat about 6.8 grams of carbs for every kilogram they weigh each day, which is more than what Western guidelines usually suggest for moderate training — and this might be because of their food culture.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes

Randomized Controlled Trial

Human

2022 Mar 22

The study shows that Japanese endurance athletes recover muscle fuel best when eating around 7 grams of carbs per kg of body weight per day. This matches the claim that they typically eat about 6.8 grams, so the study supports that this amount makes sense for their training.

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Source Study

Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes

Score: 46

DOI: 10.3390/nu14071320

Similar Assertions

These players eat more carbs on game days and training days than on rest days — they’re eating more fuel when they need it most.

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If Japanese male endurance athletes eat only 5 grams of carbs per kilo of body weight after tough exercise, their muscles don’t fully refill their energy stores in 24 hours. But if they eat 7 or 10 grams per kilo, their muscles do recover completely in that time.

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