Which of these statements about the effects of cold applications is correct?

The correct statement regarding the effects of cold applications is that they reduce swelling and inhibit circulation. Cold therapy, also known as cryotherapy, causes vasoconstriction, which is the narrowing of blood vessels. This results in a decrease in blood flow to the affected area, thereby reducing swelling and inflammation. The cooling effect also helps to numb the area, which can alleviate pain and discomfort associated with injuries.

In the context of the other statements, it's important to note that cold applications do not dilate blood vessels or increase blood flow; instead, they have the opposite effect by constricting the vessels. Furthermore, while cold therapy may provide a sense of muscle relaxation after the initial response to cold, its primary action is not to relax muscles but to reduce activity and slow down metabolic processes in tissues. Overall, the primary therapeutic effects of cold applications center around reducing swelling and providing pain relief by inhibiting circulation in the damaged area.