The Transeurope Footrace Project: longitudinal data acquisition in a cluster randomized mobile MRI observational cohort study on 44 endurance runners at a 64-stage 4,486km transcontinental ultramarathon
Uwe HW Schütz*, Arno Schmidt-Trucksäss, Beat Knechtle, Jürgen Machann, Heike Wiedelbach, Martin Ehrhardt, Wolfgang Freund, Stefan Gröninger, Horst Brunner, Ingo Schulze, Hans-Jürgen Brambs and Christian Billich