She said: "Exercise is really important for your health. That's the first thing I mention to anyone asking about the implications of this work for exercise.
"There is tons of evidence that exercise is important for keeping our bodies and minds healthy, and this work does nothing to change that message."
While moderately active individuals burned about 200 more calories each day than most sedentary people, those who did higher levels of exercise saw no extra benefit.
The study showed that diet is just as important as exercise when it comes to shedding weight.
