Peripheral bone mineral density and different intensities of physical activity in children 6-8 years old: The Copenhagen School Child Intervention Study
(2007) In Calcified Tissue International 80(1). p.31-38- Abstract
- This study aimed to evaluate the association between objectively measured habitual physical activity and calcaneal and forearm bone mineral density (BMD, g/cm(2)), one mechanically more loaded and one less loaded skeletal region, in children aged 6-8 years. BMD was measured in 297 boys and 265 girls by peripheral dual-energy X-ray absorptiometry in the forearm and calcaneus. An accelerometer registered the level of physical activity during 4 days (2 weekdays and the weekend). Weight, height, and skinfold thickness were measured. In order to establish thresholds (count center dot min(-1)) for bone-stimulating physical activity, we evaluated different definitions of vigorous physical activity. The boys had 3.2% higher distal forearm bone... (More)
- This study aimed to evaluate the association between objectively measured habitual physical activity and calcaneal and forearm bone mineral density (BMD, g/cm(2)), one mechanically more loaded and one less loaded skeletal region, in children aged 6-8 years. BMD was measured in 297 boys and 265 girls by peripheral dual-energy X-ray absorptiometry in the forearm and calcaneus. An accelerometer registered the level of physical activity during 4 days (2 weekdays and the weekend). Weight, height, and skinfold thickness were measured. In order to establish thresholds (count center dot min(-1)) for bone-stimulating physical activity, we evaluated different definitions of vigorous physical activity. The boys had 3.2% higher distal forearm bone mineral content (BMC, P < 0.001) and 4.5% higher distal forearm BMD (P < 0.001) than the girls. They also carried out 9.7% more daily physical activity and spent 14.6-19.0% more time in vigorous physical activity (all P < 0.05) compared to the girls. In contrast, the girls had 3.8% higher calcaneal BMC (P < 0.01) and 2.5% higher calcaneal BMD (P < 0.05) than the boys. Both calcaneal and forearm BMD were significantly related to total time of daily physical activity as well as with intense physical activity above all the chosen cut-off points (all P < 0.05). The beta value for mean count center dot min(-1) physical activity was significantly lower than that for all the chosen cut-off points of vigorous activity both for calcaneal and distal forearm BMD. This study suggests that both habitual daily physical activity and amount of vigorous physical activity in children aged 6-8 years are associated with appendicular BMD. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/677534
- author
- Hasselstrom, H. ; Karlsson, Magnus LU ; Hansen, S. E. ; Gronfeldt, V. ; Froberg, K. and Andersen, L. B.
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- bone mineral density, bone mineral content, physical activity
- in
- Calcified Tissue International
- volume
- 80
- issue
- 1
- pages
- 31 - 38
- publisher
- Springer
- external identifiers
-
- wos:000243448700005
- scopus:33846257268
- ISSN
- 1432-0827
- DOI
- 10.1007/s00223-006-0137-9
- language
- English
- LU publication?
- yes
- id
- ca4b1399-fe55-4285-b801-92f2832d4fc1 (old id 677534)
- date added to LUP
- 2016-04-01 17:03:53
- date last changed
- 2024-02-27 11:31:20
@article{ca4b1399-fe55-4285-b801-92f2832d4fc1,
abstract = {{This study aimed to evaluate the association between objectively measured habitual physical activity and calcaneal and forearm bone mineral density (BMD, g/cm(2)), one mechanically more loaded and one less loaded skeletal region, in children aged 6-8 years. BMD was measured in 297 boys and 265 girls by peripheral dual-energy X-ray absorptiometry in the forearm and calcaneus. An accelerometer registered the level of physical activity during 4 days (2 weekdays and the weekend). Weight, height, and skinfold thickness were measured. In order to establish thresholds (count center dot min(-1)) for bone-stimulating physical activity, we evaluated different definitions of vigorous physical activity. The boys had 3.2% higher distal forearm bone mineral content (BMC, P < 0.001) and 4.5% higher distal forearm BMD (P < 0.001) than the girls. They also carried out 9.7% more daily physical activity and spent 14.6-19.0% more time in vigorous physical activity (all P < 0.05) compared to the girls. In contrast, the girls had 3.8% higher calcaneal BMC (P < 0.01) and 2.5% higher calcaneal BMD (P < 0.05) than the boys. Both calcaneal and forearm BMD were significantly related to total time of daily physical activity as well as with intense physical activity above all the chosen cut-off points (all P < 0.05). The beta value for mean count center dot min(-1) physical activity was significantly lower than that for all the chosen cut-off points of vigorous activity both for calcaneal and distal forearm BMD. This study suggests that both habitual daily physical activity and amount of vigorous physical activity in children aged 6-8 years are associated with appendicular BMD.}},
author = {{Hasselstrom, H. and Karlsson, Magnus and Hansen, S. E. and Gronfeldt, V. and Froberg, K. and Andersen, L. B.}},
issn = {{1432-0827}},
keywords = {{bone mineral density; bone mineral content; physical activity}},
language = {{eng}},
number = {{1}},
pages = {{31--38}},
publisher = {{Springer}},
series = {{Calcified Tissue International}},
title = {{Peripheral bone mineral density and different intensities of physical activity in children 6-8 years old: The Copenhagen School Child Intervention Study}},
url = {{http://dx.doi.org/10.1007/s00223-006-0137-9}},
doi = {{10.1007/s00223-006-0137-9}},
volume = {{80}},
year = {{2007}},
}