Method
Every claim on The Splits Lab traces back to a published source. Here is how we decide what to say.
Our default position on sports nutrition is Anita Bean's The Complete Guide to Sports Nutrition, a widely used reference that draws on more than a thousand studies. We go back to the primary studies behind it wherever we can and cite them by author and year.
Research keeps moving. Where a newer consensus statement or meta-analysis says something different, we show both and say which is newer. We don't quietly pick a side.
Some studies are funded by the companies whose products they test. We say so when it matters, for example with the original carbon super-shoe research.
Training numbers come from one amateur runner's own logs. They show what applying the research looks like in practice. They are not a prescription: your numbers will differ.
The posts and this site are produced with the help of AI tools. The data, the sources and the standard we hold them to are real, and every post is labelled.