Method
Every claim on The Splits Lab traces back to a published source. Here is how we decide what to say.
When the research disagrees, our default position on sports nutrition is Anita Bean's The Complete Guide to Sports Nutrition (2022 edition), a standard reference built on more than 1,100 sources. Where newer evidence differs, we say so. We go back to the primary studies wherever we can and cite those, by author and year, rather than the book.
We're not affiliated with, or endorsed by, the author or publisher.
Every study a post cites is kept in a register with its full reference, where we checked it, and the specific findings we rely on. Before anything is published, an automatic check confirms that each number attributed to a study matches that register, that the reference details match the publisher's record, and that no wording is copied from the textbook or the papers in our library.
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.