The Claim

In elite race walkers, adherence to a ketogenic low-carbohydrate, high-fat diet for 3 weeks is associated with increased blood ketone concentrations (specifically β-hydroxybutyrate) during exercise, reaching approximately 1 mmol/L, indicating the presence of metabolic ketosis even during high-intensity endurance activity.

Source: Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
51score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Elite race walkers who follow a keto diet for 3 weeks start burning fat for fuel during intense exercise, and their bodies show signs of ketosis — like having 1 mmol/L of ketones in the blood — even when working hard.

See the scientific wording

In elite race walkers, adaptation to a ketogenic low-carbohydrate, high-fat diet for 3 weeks is associated with elevated blood ketone concentrations (β-hydroxybutyrate) during exercise, reaching levels of approximately 1 mmol/L, confirming metabolic ketosis even during high-intensity endurance activity.

What the research says

1 study
  1. Study: Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers

    The study looked at race walkers eating a very low-carb, high-fat diet for 3 weeks, and found their bodies burned more fat during exercise, which usually means they were in ketosis.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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