An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Hew-Butler T, Collins M, Bosch A, Sharwood K, Wilson G, Armstrong M, Jennings C, Swart J, Noakes T.Hew-Butler T, et al. Among authors: swart j.Clin J Sport Med. 2007 Mar;17(2):116-22. doi: 10.1097/JSM.0b013e3180326836.Clin J Sport Med. 2007.PMID: 17414479