title: Effects of beta-hydroxy-beta-methylbutyrate on aerobic-performance components and body composition in college students.
abstract: The aim of this study was to determine the effects of oral beta-hydroxy-beta-methylbutyrate (HMB) supplementation (3 g/d) on selected components of aerobic performance and body composition of active college students. Subjects were randomly assigned to either an HMB (n=8) or a placebo (PLA) group (n=8) for a 5-wk supplementation period during which they underwent interval training 3 times a week on a treadmill. Aerobic-performance components were measured using a respiratory-gas analyzer. Body composition was determined using dual-energy X-ray absorptiometry. After the intervention, there were significant differences (P<0.05) between the 2 groups in gains in maximal oxygen consumption (+8.4% for PLA and +13.4% for HMB). Regarding body composition, there were no significant differences. The authors concluded that HMB supplementation positively affects selected components of aerobic performance in active college students.
authors.affiliation: Faculty of Physical Education and Sports, University of Sherbrooke, Sherbrooke, QC J1K 2R1 Canada.
authors.forename: Cédric R H
authors.initials: CR
authors.lastname: Lamboley
authors.forename: Donald
authors.initials: D
authors.lastname: Royer
authors.forename: Isabelle J
authors.initials: IJ
authors.lastname: Dionne
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D001823:Body Composition / Q000187:drug effects* / Q000502:physiology; D019587:Dietary Supplements; D004734:Energy Metabolism / Q000187:drug effects / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000187:drug effects* / Q000502:physiology; D012119:Respiration / Q000187:drug effects; D014631:Valerates / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D014631:Valerates; C004961:beta-hydroxyisovaleric acid