1 Wear racing shoes to feel faster. 2  A race day is different from your other running days, and it's natural to want to make it feel special. 3  You eat more carefully on race day, dress in lighter running clothes, and warm up more thoroughly. 4  If you like the feel of sleek, speedy racing shoes on race days, go for it.
FDA's mandate is to ensure safety and efficacy of all products it regulates, in contrast to some other regulatory agencies, which are concerned mainly with safety. For devices that go through the PMA approval pathway, FDA is evaluating each device for safety and efficacy on its own terms.
The Center for Devices and Radiological Health (CDRH) is the component within the FDA that is responsible for this program. The FDA's legal authority to regulate both medical devices and electronic radiation-emitting products is the Federal Food Drug & Cosmetic (FD&C) Act. The FD&C Act contains provisions, that is, regulatory requirements, that define FDA's level of control over these products. To fulfill the provisions of the FD&C Act that apply to medical devices and radiation-emitting products, the FDA develops, publishes and implements regulations.