The association between gastrointestinal injury, complaints, and food intake in 60-km ultramarathon runners.
N.F.J. van Venrooij; F.C. Wardenaar; D. Hoogervorst; J.M.G. Senden; Jan-Willem van Dijk; Kristin Jonvik
The impact of beetroot juice supplementation on muscular endurance, maximal strength and countermovement jump performance.
Kristin Jonvik; D. Hoogervorst; H.B. Peelen; Mark de Niet; L.B. Verdijk; Luc van Loon; Jan-Willem van Dijk