Although the Second World War and its aftermath interrupted his coaching career just as it had begun to flourish, Woldemar Gerschler established himself as one of the world’s leading running coaches in the 1950s. Above all, Gerschler was an innovator; using physiology to a greater degree than previous coaches, he developed a very specific training regime that became known as interval training. Frank Horwill, one of England’s top coaches from the 1960s, wrote that Gerschler was “30 years ahead of him time.” (Horwill, Athletics Weekly, 1982) Gordon Pirie described Gerschler in a similar way: “His approach to training distance runners was well ahead of its time.” (Pirie, Running Fast and Injury Free, p.10. www.ebooksee.com) As well as being an innovator, Gerschler successfully trained world-class athletes like Harbig, Barthel, Pirie, Hermans, Moens and Barris.