Lance Armstrong, who this fall was stripped of his seven Tour de France titles for doping and barred for life from competing in all Olympic sports, has told associates and antidoping officials that he is considering publicly admitting that he used banned performance-enhancing drugs and blood transfusions during his cycling career, according to several people with direct knowledge of the situation. He would do this, the people said, because he wants to persuade antidoping officials to restore his eligibility so he can resume his athletic career.

For more than a decade, Armstrong has vehemently denied ever doping, even after antidoping officials laid out their case against him in October in hundreds of pages of eyewitness testimony from teammates, e-mail correspondence, financial records and laboratory analyses.

When asked if Armstrong might admit to doping, Tim Herman, Armstrong’s longtime lawyer, said, “Lance has to speak for himself on that.”

Armstrong has been under pressure from various fronts to confess. Wealthy supporters of Livestrong, the charity he founded after surviving testicular cancer, have been trying to persuade him to come forward so he could clear his conscience and save the organization from further damage, one person with knowledge of the situation said.