Cunoștințe
How many steps/day are enough? for adults
Tudor-Locke Catrine, Clemes, De, Giles-Corti Billie, Hatano Yoshiro, Inoue Shigeru, Matsudo, Mutrie Nanette, Oppert Jean-Michel, Schofield, Spence, Tully, Blair, Brown, Teixeira, Rowe, Craig, Schmidt