Is their a control group in this science experiment?

He asked a group of male cyclists to ride intensely until their legs were aching and virtually all of their stored muscle fuel had been depleted. The cyclists then consumed bars and drinks that contained either mostly carbohydrates or both carbohydrates and protein. Then, over the next few days, they completed two sessions of hard intervals. One took place the following morning; the next, two days later.|||No, if there was a group that didn't consume anything and rode again, then there would be a control group.