Physical Performance, Body Weight and BMI of Young Adults in Germany 2000 - 2004: Results of the Physical-Fitness-Test Study - Leyk, D; Rohde, U; Gorges, W; Ridder, D; Wunderlich, M; Dinklage, C; Sievert, A; Rüther, T; Essfeld, D (International Journal of Sports Medicine, 2006)