Resistance Training and Milk-Substitution Enhance Body Composition and Bone Health in Adolescent Girls

作者：ANA LAURA PEREIRA DA SILVA GOMEZ, William J. Kraemer, Carl M. Maresh, Elaine C. Lee, Tunde K. Szivak, Lydia K. Caldwell, Emily M. Post, Matthew K. Beeler, Jeff S. Volek · 发表于：Journal of the American College of Nutrition · 年份：2020 · DOI：10.1080/07315724.2020.1770636 · 被引用次数：16 · 研究领域：Obesity, Physical Activity, Diet、Muscle metabolism and nutrition、Nutrition and Health in Aging

Background: Increased soft-drink consumption has contributed to poor calcium intake with 90% of adolescent girls consuming less than the RDA for calcium.Purpose/objectives: The purpose of this investigation was to determine the independent and additive effects of two interventions (milk and resistance training) on nutrient adequacy, body composition, and bone health in adolescent girls.Methods: The experimental design consisted of four experimental groups of adolescent girls 14–17 years of age: (1) Milk + resistance training [MRT]; n = 15; (2) Resistance training only [RT]; n = 15; (3) Milk only [M] n = 20; (4) Control [C] n = 16. A few significant differences were observed at baseline between the groups for subject characteristics. Testing was performed pre and post-12 week training period for all groups. Milk was provided (3, 8 oz servings) for both the MRT and the M groups. The MRT group and the RT groups performed a supervised periodized resistance training program consisting of supervised one-hour exercise sessions 3 d/wk (M, W, F) for 12 wk. Baseline dietary data was collected utilizing the NUT-P-FFQ and/or a 120 item FFQ developed by the Fred Hutchinson Cancer Research Center (Seattle, Washington). Body composition was measured in the morning after an overnight fast using dual-energy X-ray absorptiometry (DXA) with a total body scanner (ProdigyTM, Lunar Corporation, Madison, WI). A whole body scan for bone density and lumbar spine scans were performed on all subjects. ...