An exercise analysis device includes an acceleration acquiring unit, a first-data acquiring unit, a second-data acquiring unit and a third-data acquiring unit. The acceleration acquiring unit acquires acceleration of a user as the user performs an exercise. The first-data acquiring unit acquires a piece of a first data corresponding to a total amount of mechanical work of the exercise for a predetermined time based on the acceleration. The second-data acquiring unit acquires a piece of a second data corresponding to one of velocity and kinetic energy in a certain direction among directions related to the exercise for the predetermined time, based on the acceleration. The third-data acquiring unit acquires a piece of a third data corresponding to efficiency of the exercise based on the piece of the first data and the piece of the second data.
