Skaloud, JanLadetto, QuentinMerminod, BertrandVetterli, MartinGyr, MichaelMarcacci, AlbertoLuthi, PatriceSchutz, Yves2005-04-182005-04-182005-04-182001https://infoscience.epfl.ch/handle/20.500.14299/212775Downhill skiers enter a different dimension on the racecourse, but they are still subject to the laws of physics. A new Swiss system integrates GPS, video, and biosensors for precise position, velocity and heart-rate measurement, helping coaches and athletes plot the best "line" and improve training procedures - while enhancing television broadcasts.topotrajtext::journal::journal article