American cyclist Lance Armstrong has revealed that he is "unaffected" by the evidence reported by the United States Anti-Doping Agency.

The 41-year-old, who was stripped of his record seven Tour de France titles and given a lifetime ban from competitive cycling following doping allegations, has been accused of running "the most sophisticated, professionalised and successful doping programme the sport has ever seen".

The document revealed that 11 of the cyclist's former teammates had testified against the American, who founded the Livestrong foundation that helps people deal with cancer following Armstrong's diagnosis of testicular cancer in 1996.

Armstrong tweeted: "What am I doing tonight? Hanging with my family, unaffected, and thinking about this (a link to the Livestrong website)."

Armstrong announced in August that he would not fight the doping charges against him by the USADA.