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.
Gentile DA, Welk G, Eisenmann JC, Reimer RA, Walsh DA, Russell DW, Callahan R, Walsh M, Strickland S, Fritz K.Gentile DA, et al. Among authors: welk g.BMC Med. 2009 Sep 18;7:49. doi: 10.1186/1741-7015-7-49.BMC Med. 2009.PMID: 19765270Free PMC article.Clinical Trial.
Johnson R, Welk G, Saint-Maurice PF, Ihmels M.Johnson R, et al. Among authors: welk g.Int J Environ Res Public Health. 2012 Apr;9(4):1411-26. doi: 10.3390/ijerph9041411. Epub 2012 Apr 16.Int J Environ Res Public Health. 2012.PMID: 22690202Free PMC article.
Peyer KL, Welk GJ.Peyer KL, et al.Int J Environ Res Public Health. 2017 Apr 14;14(4):419. doi: 10.3390/ijerph14040419.Int J Environ Res Public Health. 2017.PMID: 28420116Free PMC article.
Bai Y, Welk GJ.Bai Y, et al.Med Sci Sports Exerc. 2017 Sep;49(9):1842-1850. doi: 10.1249/MSS.0000000000001311.Med Sci Sports Exerc. 2017.PMID: 28463900