I think this could really benefit from the Arma III weight and stamina system, where the heavier your load, the slower you move, the shorter you sprint, and the slower you regain stamina. If you use too much stamina running and quickly move to combat with little intermission, your aim will be at a disadvantage due to excess movement from heavy breathing, and your view will be slightly strained. It would still slowly recover and debuffs would gradually fade away.