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Exercise, bone mass and bone size in prepubertal boys: one-year data from the pediatric osteoporosis prevention study.

Lindén, Christian LU ; Alwis, Gayani LU ; Ahlborg, Henrik LU ; Gardsell, P; Valdimarsson, Örnolfur LU ; Stenevi Lundgren, Susanna LU ; Besjakov, Jack LU and Karlsson, M K (2007) In Scandinavian Journal of Medicine & Science in Sports 17(4). p.340-347
Abstract
This non-randomized prospective controlled study evaluates a daily school-based exercise intervention program of 40 min/school day for I year in a population-based cohort of 81 boys aged 7-9 years. Controls were 57 age-matched boys assigned to the general school curriculum of 60min/ week. Bone mineral content BMC; g) and areal bone mineral density (aBMD; g/cm(2)) were measured with dual X-ray absorptiometry (DXA) of the total body, the third lumbar vertebra (L3) and the femoral neck (FN). Bone width for L3 and FN was calculated from the lumbar spine and hip scan. No differences between the groups were found at baseline in age, anthropometrics or bone parameters. The mean annual gain in L3 BMC was 5.9 percentage points higher (P <... (More)
This non-randomized prospective controlled study evaluates a daily school-based exercise intervention program of 40 min/school day for I year in a population-based cohort of 81 boys aged 7-9 years. Controls were 57 age-matched boys assigned to the general school curriculum of 60min/ week. Bone mineral content BMC; g) and areal bone mineral density (aBMD; g/cm(2)) were measured with dual X-ray absorptiometry (DXA) of the total body, the third lumbar vertebra (L3) and the femoral neck (FN). Bone width for L3 and FN was calculated from the lumbar spine and hip scan. No differences between the groups were found at baseline in age, anthropometrics or bone parameters. The mean annual gain in L3 BMC was 5.9 percentage points higher (P < 0.001), L3 aBMD a mean 2.1 percentage points higher (P = 0.01) and L3 width a mean 2.3 percentage points higher (P = 0.001) in the cases than in the controls. When all individuals were included in one cohort, the total duration of exercise including both school-based and spare-time training correlated with L3 BMC (r = 0.26, P = 0.003), L3 aBMD (r = 0.18, P = 0.04) and L3 width (r = 0.24, P = 0.006). The study suggests that exercise in pre-pubertal boys influences the accrual of bone mineral and bone width and that a 1-year school-based exercise program confers skeletal benefits, at least in the lumbar spine. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
bone mineral density, bone width, boys, tanner I, prepubertal, physical activity, bone mineral content
in
Scandinavian Journal of Medicine & Science in Sports
volume
17
issue
4
pages
340 - 347
publisher
Wiley-Blackwell
external identifiers
  • wos:000248481300006
  • scopus:34547186063
ISSN
1600-0838
DOI
10.1111/j.1600-0838.2006.00568.x
language
English
LU publication?
yes
id
c4b93cd5-f083-437a-864c-87941e03e3b3 (old id 158321)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=16774651&dopt=Abstract
date added to LUP
2007-07-26 08:43:21
date last changed
2017-11-05 04:32:25
@article{c4b93cd5-f083-437a-864c-87941e03e3b3,
  abstract     = {This non-randomized prospective controlled study evaluates a daily school-based exercise intervention program of 40 min/school day for I year in a population-based cohort of 81 boys aged 7-9 years. Controls were 57 age-matched boys assigned to the general school curriculum of 60min/ week. Bone mineral content BMC; g) and areal bone mineral density (aBMD; g/cm(2)) were measured with dual X-ray absorptiometry (DXA) of the total body, the third lumbar vertebra (L3) and the femoral neck (FN). Bone width for L3 and FN was calculated from the lumbar spine and hip scan. No differences between the groups were found at baseline in age, anthropometrics or bone parameters. The mean annual gain in L3 BMC was 5.9 percentage points higher (P &lt; 0.001), L3 aBMD a mean 2.1 percentage points higher (P = 0.01) and L3 width a mean 2.3 percentage points higher (P = 0.001) in the cases than in the controls. When all individuals were included in one cohort, the total duration of exercise including both school-based and spare-time training correlated with L3 BMC (r = 0.26, P = 0.003), L3 aBMD (r = 0.18, P = 0.04) and L3 width (r = 0.24, P = 0.006). The study suggests that exercise in pre-pubertal boys influences the accrual of bone mineral and bone width and that a 1-year school-based exercise program confers skeletal benefits, at least in the lumbar spine.},
  author       = {Lindén, Christian and Alwis, Gayani and Ahlborg, Henrik and Gardsell, P and Valdimarsson, Örnolfur and Stenevi Lundgren, Susanna and Besjakov, Jack and Karlsson, M K},
  issn         = {1600-0838},
  keyword      = {bone mineral density,bone width,boys,tanner I,prepubertal,physical activity,bone mineral content},
  language     = {eng},
  number       = {4},
  pages        = {340--347},
  publisher    = {Wiley-Blackwell},
  series       = {Scandinavian Journal of Medicine & Science in Sports},
  title        = {Exercise, bone mass and bone size in prepubertal boys: one-year data from the pediatric osteoporosis prevention study.},
  url          = {http://dx.doi.org/10.1111/j.1600-0838.2006.00568.x},
  volume       = {17},
  year         = {2007},
}