Eliud Kipchoge’s marathon world record and the 2017 Hoogkamer/Nike study

The Vaporfly study and the four per cent claim In November 2017, Wouter Hoogkamer and colleagues published the study that underlies Nike’s claim that its new shoe — the Zoom Vaporfly 4% (VF4%) — improves one’s running by around 4%. Hoogkamer, a research associate at the University of Colorado, published the study in the journal […]