Similarities between sustained sport performance and behavior in extended spaceflights.

Extended spaceflights seem to be similar to lengthy sport trials, in which top athletes are stressed by confinement and are still asked to maintain a high level of performance, staving off fatigue and performance decrements. The athletes use coping strategies and recovery techniques in order to compensate for unexpected workoverload during sustained operation. Astronauts probably experience similar conditions, and they may use similar coping strategies and recovery techniques. Since sustained and continuous operation preferably affects the mental capabilities required for complex tasks, particular attention should be paid to decrements of mental and psychological performance and to techniques that could be used specifically for the recovery of a satisfactory level of performance.

[Gastric duplication. Apropos of a case detected in an adult in a segment from a total gastrectomy]. / Les duplications gastriques. A propos d'un cas découvert à l'âge adulte sur une piéce de gastrectomie totale.

Gastric duplications are cystic or tubular formations lying in close proximity to the stomach, gastric localizations representing only 3.8% of these digestive malformations of embryologic origin. They should possess walls contiguous with that of the stomach, and a smooth muscle layer fused with that of the stomach, their covering layer being digestive bat not necessarily gastric epithelium. Its presence was discovered fortuitously in a total gastrectomy piece from a patient with adenocarcinoma. The anatomy, diagnostic and treatment of these malformations are discussed.