The protocol consists of 6 months of intense physical activity and stretching programs for children with solid cancer or haematological disease, starting at diagnosis. Evaluations will be performed at the first, third and sixth month of the programs and then six and eighteen months after they are stopped. The physical activity sessions will take place in the hospital during hospitalizations or by videoconference when the children are at home. The sessions are adapted to the needs, desires and abilities of the children and will take place two to three times a week. They will be mediated by various activities such as soccer, rugby, darts, muscle strengthening. Inclusion lasts two years.
The main objective of this study is to evaluate the evolution of the sensitivity to insulin, a hormone that acts on sugar in the body, as well as other metabolic, motor and nutritional elements of children with cancer, according to the practice of intense physical activities or stretching. In view of the scientific work on this subject, it is expect to observe that the practice of intense physical activities will improve the results of the children in the metabolic, motor and nutritional evaluations, compared to the stretching program.