title: Bone mass and bone metabolic indices in male master rowers.
abstract: The purpose of this study was to assess bone mass and bone metabolic indices in master athletes who regularly perform rowing exercises. The study was performed in 29 men: 14 master rowers and 15 non-athletic, body mass index-matched controls. Dual-energy X-ray absorptiometry measurements of the areal bone mineral density (aBMD) were performed for the total body, regional areas (arms, total forearms, trunk, thoracic spine, pelvis, and legs), lumbar spine (L1-L4), left hip (total hip and femoral neck), and forearm (33 % radius of the dominant and nondominant forearm). Serum concentrations of osteocalcin, collagen type I cross-linked C-telopeptide, visfatin, resistin, insulin, and glucose were determined. Comparative analyses showed significantly lower levels of body fat and higher lean body mass values in the rowers compared to the control group. The rowers also had significantly higher values of total and regional (left arm, trunk, thoracic spine, pelvis, and leg) BMD, as well as higher BMD values for the lumbar spine and the left hip. There were significant differences between the groups with respect to insulin, glucose, and the index of homeostasis model assessment insulin resistance. In conclusion, the systematic training of master rowers has beneficial effects on total and regional BMD and may be recommended for preventing osteoporosis.
authors.affiliation: Department of Hygiene, University School of Physical Education in Poznań, Królowej Jadwigi 27/39, 61-871, Poznań, Poland, sliwicka@awf.poznan.pl.
authors.forename: Ewa
authors.initials: E
authors.lastname: Śliwicka
authors.forename: Alicja
authors.initials: A
authors.lastname: Nowak
authors.forename: Wojciech
authors.initials: W
authors.lastname: Zep
authors.forename: Piotr
authors.initials: P
authors.lastname: Leszczyński
authors.forename: Łucja
authors.initials: Ł
authors.lastname: Pilaczyńska-Szcześniak
mesh_terms: D015502:Absorptiometry, Photon / Q000379:methods; D000273:Adipose Tissue / Q000378:metabolism / Q000502:physiology; D056352:Athletes; D001823:Body Composition / Q000502:physiology; D015992:Body Mass Index; D015519:Bone Density / Q000502:physiology*; D001842:Bone and Bones / Q000378:metabolism* / Q000502:physiology; D024042:Collagen Type I / Q000378:metabolism; D015444:Exercise / Q000502:physiology*; D005272:Femur Neck / Q000378:metabolism* / Q000502:physiology; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D007333:Insulin Resistance / Q000502:physiology; D008297:Male; D008875:Middle Aged; D010455:Peptides / Q000378:metabolism
chemical_list: D024042:Collagen Type I; D010455:Peptides; C052929:collagen type I trimeric cross-linked peptide