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.
Diehl M, Marsiske M, Horgas AL, Rosenberg A, Saczynski JS, Willis SL.Diehl M, et al. Among authors: horgas al.J Appl Gerontol. 2005;24(3):211-230. doi: 10.1177/0733464804273772.J Appl Gerontol. 2005.PMID: 18160968Free PMC article.
Rebok GW, Ball K, Guey LT, Jones RN, Kim HY, King JW, Marsiske M, Morris JN, Tennstedt SL, Unverzagt FW, Willis SL; ACTIVE Study Group.Rebok GW, et al.J Am Geriatr Soc. 2014 Jan;62(1):16-24. doi: 10.1111/jgs.12607. Epub 2014 Jan 13.J Am Geriatr Soc. 2014.PMID: 24417410Free PMC article.Clinical Trial.