Alternative definitions of sarcopenia, lower extremity performance, and functional impairment with aging in older men and women.
Delmonico MJ, Harris TB, Lee JS, Visser M, Nevitt M, Kritchevsky SB, Tylavsky FA, Newman AB. Alternative definitions of sarcopenia, lower extremity performance, and functional impairment with aging in older men and women. J Am Geriatr Soc. 2007 May; 55(5):769-74.