Will drinking a sugared drink like Gatorade® help with a 1-hour workout?
Yes, a moderately high amount of sugar can do it, but it may depend on the type of exercise. A product like Gatorade® provides hydration,
Is there a study saying vitamin D can give me a better VO2 max?
Maybe. VO2 max measures the maximum amount of oxygen someone can use during exertion. This gives an indication of aerobic fitness, though it does not