Tim Noakes
Scientist and author
Author of the reference work Lore of Running and originator of the central governor model of fatigue. Later a prominent and contested advocate of low-carbohydrate high-fat eating, an area where his claims run ahead of the mainstream evidence.
Tim Noakes (born 1949) is a South African scientist and physician and the author of Lore of Running, long a standard reference. His two best-known contributions sit at opposite ends of the evidence spectrum.
The first is the central governor model: the proposal that the brain regulates exercise intensity and muscle recruitment in anticipation, to protect the body, so that fatigue is a centrally generated sensation and exhaustion arrives before true muscular failure (Noakes 2012). It is a serious, influential idea and a direct challenge to purely peripheral accounts, but it remains contested, as the fatigue mechanisms page sets out.
The second is his advocacy, from around 2010, of low-carbohydrate high-fat eating. Here the claims are weaker and disputed: the low-carbohydrate and keto evidence does not support the performance benefits asserted for endurance running, and the position has drawn sustained criticism. The contrast is instructive: a scientist can advance a genuinely important theory in one area and overreach in another, which is why claims are weighed on their evidence rather than on the name attached.