1. Dudink, A. Nature 368, 592 (1994).
2. Baxter-Jones A. et al. J. Sports Sci. Abstr. 12, 156 (1994).
3. Brewer, J. et al. J. Sports Sci. Abstr. 10, 561–562 (1992).
4. Rowley, S. Training of Young Athletes Study: Project Description (Sports Council, London, 1991).
5. Baxter-Jones, A. D. G. et al. Ann. hum. Biol. (in the press).