The Effect of a 9-Week Physical Activity Programme on Bone and Body Composition of Children Aged 10 – 11 Years: An Exploratory Trial - McWhannell, N.; Henaghan, J. L.; Foweather, L.; Doran, D. A.; Batterham, A. M.; Reilly, T.; Stratton, G. (International Journal of Sports Medicine, 2008)