title: Increasing fluid milk favorably affects bone mineral density responses to resistance training in adolescent boys.
abstract: 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.
authors.affiliation: Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA. jvolek@uconnvm.uconn.edu
authors.forename: Jeff S
authors.initials: JS
authors.lastname: Volek
authors.forename: Ana L
authors.initials: AL
authors.lastname: Gómez
authors.forename: Timothy P
authors.initials: TP
authors.lastname: Scheett
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Sharman
authors.forename: Duncan N
authors.initials: DN
authors.lastname: French
authors.forename: Martyn R
authors.initials: MR
authors.lastname: Rubin
authors.forename: Nicholas A
authors.initials: NA
authors.lastname: Ratamess
authors.forename: Michael M
authors.initials: MM
authors.lastname: McGuigan
authors.forename: William J
authors.initials: WJ
authors.lastname: Kraemer
mesh_terms: D015502:Absorptiometry, Photon; D000293:Adolescent; D017195:Adolescent Nutritional Physiological Phenomena; D000818:Animals; D000886:Anthropometry; D001823:Body Composition; D015519:Bone Density / Q000187:drug effects*; D001846:Bone Development / Q000187:drug effects / Q000502:physiology; D002113:Calcification, Physiologic / Q000187:drug effects* / Q000502:physiology; D002136:Calcium, Dietary / Q000008:administration & dosage*; D006801:Humans; D008297:Male; D008892:Milk / Q000737:chemistry*; D011446:Prospective Studies; D014891:Weight Lifting / Q000502:physiology*
chemical_list: D002136:Calcium, Dietary