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.
Williams CA, Armstrong N, Powell J.Williams CA, et al.Br J Sports Med. 2000 Jun;34(3):168-73. doi: 10.1136/bjsm.34.3.168.Br J Sports Med. 2000.PMID: 10854015Free PMC article.Clinical Trial.
Barker AR, Williams CA, Jones AM, Armstrong N.Barker AR, et al. Among authors: williams ca.Br J Sports Med. 2011 May;45(6):498-503. doi: 10.1136/bjsm.2009.063180. Epub 2009 Aug 12.Br J Sports Med. 2011.PMID: 19679577
Willcocks RJ, Williams CA, Barker AR, Fulford J, Armstrong N.Willcocks RJ, et al. Among authors: williams ca.NMR Biomed. 2010 Jul;23(6):569-77. doi: 10.1002/nbm.1495.NMR Biomed. 2010.PMID: 20661873
Breese BC, Armstrong N, Barker AR, Williams CA.Breese BC, et al. Among authors: williams ca.Respir Physiol Neurobiol. 2011 Jul 31;177(2):149-54. doi: 10.1016/j.resp.2011.03.018. Epub 2011 Mar 29.Respir Physiol Neurobiol. 2011.PMID: 21453796