Longitudinal study of muscle strength, quality, and adipose tissue infiltration - Delmonico, M J; Harris, T B; Visser, M; Park, S W; Conroy, M B; Velasquez-Mieyer, P; Boudreau, R; Manini, T M; Nevitt, M; Newman, A B; Goodpaster, B HHealth, Aging, and Body (Am J Clin Nutr, 2009)