Satele in the timeline of the game , already a shadow of her former self
In the Opening Movie of SWTOR , from the Return and to the Alderaan Battle Scene, you see Satele in her youth and peak performance.. in the SWTOR game time, she is already too old for the jedi physical combat.. she is the leader of Jedi Council, her position now is to lead and teach.. not combat..
She admitted this when you ask her ( in the Carrick Station Flashpoint Terminals) to come with you to help in certain FP.. She will tell you that she is too old now , unlike you (the player) thats young and strong