title: Bone speed of sound, bone turnover and IGF-I in adolescent synchronized swimmers.
abstract: This pilot study compared bone speed of sound (SOS), bone turnover and insulin-like growth factor 1 (IGF-1) between 20 Caucasian, postmenarcheal, adolescent synchronized swimmers (SS) and 20 aged- and maturity-matched nonswimmers (NS). Daily dietary intake and physical activity levels were also assessed. Bone SOS was measured by quantitative ultrasound. Blood samples were analyzed for osteocalcin, cross-linked N-teleopeptide of type I collagen (NTx), IGF-I and 25-OH vitamin D. Although no differences in bone SOS or turnover markers were observed between groups, the lower IGF-1 and vitamin D intake found in synchronized swimmers, in combination with their higher strenuous activity levels, should be further explored.
authors.affiliation: Dept. of Physical Education and Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada L2S 3A1.
authors.forename: Izabella A
authors.initials: IA
authors.lastname: Ludwa
authors.forename: Bareket
authors.initials: B
authors.lastname: Falk
authors.forename: Matthew
authors.initials: M
authors.lastname: Yao
authors.forename: Lauren
authors.initials: L
authors.lastname: Corbett
authors.forename: Panagiota
authors.initials: P
authors.lastname: Klentrou
mesh_terms: D000293:Adolescent; D015415:Biomarkers; D015519:Bone Density / Q000502:physiology*; D016723:Bone Remodeling / Q000502:physiology*; D001842:Bone and Bones / Q000000981:diagnostic imaging* / Q000378:metabolism; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000378:metabolism*; D010865:Pilot Projects; D013550:Swimming / Q000502:physiology*; D014463:Ultrasonography
chemical_list: D015415:Biomarkers; D007334:Insulin-Like Growth Factor I