Hence , the linear relationships could lead one to conclude that Armstrong indeed raced faster than his predecessors and that the doping agents he resorted to might have strongly contributed to these achievements ( 2 , 3 ) .
Armstrong won his trials between 1999 and 2005 .
The linear relationships could lead one to conclude that Armstrong indeed raced faster than Armstrong 's predecessors and that the doping agents he resorted to might have strongly contributed to these achievements ( 2 , 3 ) .
Armstrong won his trials between 1999 and 2005 .