title: Energy balance and luteal phase progesterone levels in elite adolescent aesthetic athletes.
abstract: Menstrual abnormalities are associated with negative energy balance and reduced energy expenditure (REE). To examine this relationship in elite adolescent aesthetic athletes, 3 groups of females (aged 15-18 years) were studied: 10 oligo/amenorrheic athletes (OA), 11 eumenorrheic athletes (EA), and 8 non-athlete controls (C). Components of energy balance, body composition, dietary restraint, pubertal maturation, and luteal phase salivary progesterone were assessed in all groups. Both groups of athletes had a later age of menarche and lower pubertal development score compared to the non-athletes (p < or = .05). With the exception of salivary progesterone (ng/ml; OA = 0. 15 +/- 0.01 <EA = 0.29 +/- 0.1 and C = 0.30 +/- 0.13, p = .007), there were no differences between the athlete groups. Energy balance (kcal/d) in the OA group was lower (-290 +/- 677) compared to eitherEA (-5 +/- 461) or C ( 179 +/- 592) but did not reach significance (p =.24). Dietary energy intake and absolute REE (kcal/d) were not different among groups, despite detectable differences in reproductive status, and thus could not be attributed to differences in energy balance or REE.
authors: Faculty of Agriculture, Food & Nutritional Science at the University of Alberta, Edmonton, Canada.
authors: Karen J
authors: KJ
authors: Reading
authors: Linda I
authors: LI
authors: McCargar
authors: Vicki J
authors: VJ
authors: Harber
mesh_terms: D000293:Adolescent; D000858:Anovulation; D001823:Body Composition / Q000502:physiology; D003430:Cross-Sectional Studies; D002149:Energy Intake / Q000502:physiology; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006801:Humans; D008183:Luteal Phase / Q000378:metabolism*; D008572:Menarche; D011374:Progesterone / Q000032:analysis*; D012463:Saliva / Q000737:chemistry; D012741:Sexual Maturation / Q000502:physiology*; D013177:Sports / Q000502:physiology*
chemical_list: D011374:Progesterone