His muscular strength of the foot was compared to that of a track-and-field athlete who can run 100m in ten seconds. A sports science physician of the University of Poitiers said Joubert jumps at the best angle possible for quadruple jumps. Coaching changes and training Joubert kept his training base in Poitiers throughout his career, in order to remain close to his family. He trained for 15 years with Veronique Guyon, until she resigned from her position in the summer of 2003 to spend more time with her family. Joubert then started training with Laurent Depouilly, and took on Alexei Yagudin as an 'advisor'. Joubert later parted ways with Yagudin because of Yagudin's dislike for Nikolai Morozov, Joubert's choreographer at the time. Citing a lack of support from his coach, Joubert fired Depouilly and returned to Guyon for a brief period of time. However, Guyon's demands that Joubert stop working with his mother and that she should receive 10% of his prize money from the 2005–06 season caused their relationship to deteriorate, and they parted ways. Joubert switched to Andrei Berenzitsev until he stopped coaching; Joubert then briefly worked with Annick Dumont but they parted ways because she lived in Paris while he did not wish to leave Poitiers. In September 2006, he began working with Jean-Christophe Simond. Joubert left Simond following the 2009 Worlds, citing lack of trust. He returned to Laurent Depouilly in April 2009 and was coached by him until May 2010. Joubert later returned to his first coach, Veronique Guyon, and worked with Patrick Gueppe for part of the 2011-12 season. Following the 2012 World Championships, Joubert stated that he would train in different locations during the 2012–2013 season, because his home rink in Poitiers was to be torn down in order to build a new one by the 2013–2014 season. He was unable to get ice in nearby Niort. In September 2012, shortly before the Poitier rink's closure, Joubert relocated to Paris; he trained with Annick Dumont at Champigny-sur-Marne and remained in contact with Guyon. Joubert lived at the Institute of Physical Education (INSEP) and said that he might be able to return to the Poitiers rink at the end of June 2013. By January 2013, he had returned to Poitiers and was training in La Roche-sur-Yon. Later in the season, he trained with Katia Krier in Paris-Bercy. After it was announced that the Poitiers