Fatness, fitness, and cardiometabolic risk factors among sixth-grade youth - Jago, R; Drews, K L; McMurray, R G; Thompson, D; Volpe, S L; Moe, E L; Jakicic, J M; Pham, T H; Bruecker, S; Blackshear, T B; Yin, Z (Med Sci Sports Exerc, 2010)