(from the journal abstract) These are considerations about an original activity offered to children hospitalized for cancer treatment. These children benefit from various sports adapted to their needs and state of health. The aim is to develop appropriate resources for each child. Over nearly ten years these activities have been used by more than 14,000 patients between the ages of 2 and 18. Sport in a hospital room brings spatial modifications, gives a different rhythm to time, leads to changes in the child's vision about himself and the world, as well as changes in the vision that others have of the "sick child in sport activity". One could observe a new appropriation by the child of his own body as a source of pleasure in spite of alienation due to cancer. The relationship to the medical staff was also modified, introducing a space where subjectivity can take place beyond the constraints bound to medical techniques. (PsycINFO Database Record (c) 2005 APA, all rights reserved)