Volek Jeff S, Gómez Ana L, Scheett Timothy P, Sharman Matthew J, French Duncan N, Rubin Martyn R, Ratamess Nicholas A, McGuigan Michael M, Kraemer William J
Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA.
J Am Diet Assoc. 2003 Oct;103(10):1353-6. doi: 10.1016/s0002-8223(03)01073-3.
This study examined the effects of increasing milk on bone and body composition responses to resistance training in adolescents. Twenty-eight boys (13 to 17 years of age) were randomly assigned to consume, in addition to their habitual diet, 3 servings/day of 1% fluid milk (n=14) or juice not fortified with calcium (n=14) while engaged in a 12-week resistance-training program. For all subjects combined, there were significant (P<or=.05) changes in height (+0.5%), sigmaseven skin folds (-7.7%), body mass (+2.6%), lean body mass (+5.1%), fat mass (-9.3%), whole-body bone mineral content (+3.6%), bone mineral density (+1.8%), and maximal strength in the squat (+43%) and bench press (+23%). Compared with juice, the milk group had a significantly greater increase in bone mineral density (0.014 vs 0.028 g/cm(2)). Increasing intake of milk in physically active adolescent boys may enhance bone health.
本研究探讨了增加牛奶摄入量对青少年抗阻训练后骨骼及身体成分反应的影响。28名男孩（13至17岁）在进行为期12周的抗阻训练计划时，除日常饮食外，被随机分配每天饮用3份1%的流质牛奶（n = 14）或未添加钙的果汁（n = 14）。综合所有受试者来看，身高（+0.5%）、肱三头肌皮褶厚度（-7.7%）、体重（+2.6%）、去脂体重（+5.1%）、脂肪量（-9.3%）、全身骨矿物质含量（+3.6%）、骨矿物质密度（+1.8%）以及深蹲最大力量（+43%）和卧推最大力量（+23%）均有显著（P≤0.05）变化。与果汁组相比，牛奶组的骨矿物质密度增加更为显著（0.014 vs 0.028 g/cm²）。增加体育活动的青少年男孩的牛奶摄入量可能会促进骨骼健康。
