@article{Vlachopoulos:44965, author = "Vlachopoulos, D. and Barker, A.R. and Williams, C.A. and Knapp, K.M. and Metcalf, B.S. and Gracia-Marco, L.", title = "{Effect of a program of short bouts of exercise on bone health in adolescents involved in different sports: The PRO-BONE study protocol Health behavior, health promotion and society}", year = "2015", }