First, Im assuming you mean pre contest.Second Coleman also takes large amounts of drugs, probably a few that control cortisol. And he eats a lot of Cornbread. And he falls when he tries to run in flippers on the beach. What pros say they do usually does not work for most people. If it did, there would not be a need for a site like this, as Flex and Muscle and Fitness would have all the answers.
If you are concerned about muscle loss and strength, cortisol would be your biggest enemy. Cardio on an empty stomach will raise cortisol.
Best cardio for cutting?