Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study

The aim of this study was to describe and compare bone mineral density (BMD) development in Norwegian women and men aged 25–44 years in a population-based, longitudinal study. BMD was measured twice at distal and ultradistal forearm sites by single x-ray absorptiometry in 258 women and 147 men (mean...

Full description

Bibliographic Details
Published in:American Journal of Epidemiology
Main Authors: Emaus, N., Berntsen, G. K. R., Joakimsen, R. M., Fønnebø, V.
Format: Text
Language:English
Published: Oxford University Press 2005
Subjects:
Online Access:http://aje.oxfordjournals.org/cgi/content/short/162/7/633
https://doi.org/10.1093/aje/kwi258
id fthighwire:oai:open-archive.highwire.org:amjepid:162/7/633
record_format openpolar
spelling fthighwire:oai:open-archive.highwire.org:amjepid:162/7/633 2023-05-15T18:33:52+02:00 Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study Emaus, N. Berntsen, G. K. R. Joakimsen, R. M. Fønnebø, V. 2005-10-01 00:00:00.0 text/html http://aje.oxfordjournals.org/cgi/content/short/162/7/633 https://doi.org/10.1093/aje/kwi258 en eng Oxford University Press http://aje.oxfordjournals.org/cgi/content/short/162/7/633 http://dx.doi.org/10.1093/aje/kwi258 Copyright (C) 2005, Oxford University Press ORIGINAL CONTRIBUTIONS TEXT 2005 fthighwire https://doi.org/10.1093/aje/kwi258 2007-06-24T12:04:05Z The aim of this study was to describe and compare bone mineral density (BMD) development in Norwegian women and men aged 25–44 years in a population-based, longitudinal study. BMD was measured twice at distal and ultradistal forearm sites by single x-ray absorptiometry in 258 women and 147 men (mean follow-up time, 6.4 (standard deviation, 0.6) years). At the distal site, a small annual gain of approximately 0.1% became a small loss beginning at age 34 years in men and age 36 years in women. At the ultradistal site, BMD change was predicted by age in women only, and bone loss started at age 38 years. A high degree of tracking of BMD measurements was observed for both sexes and both sites, r > 0.93. Depending on total BMD change, participants were grouped into “losers,” “nonlosers,” and “gainers,” and more than 6% lost more than the smallest detectable amount of BMD: ≥3.46% at the distal site and ≥5.14% at the ultradistal site. In both sexes, bone mineral content (grams) decreased, whereas area (centimeters squared) increased significantly in “losers” compared with “gainers.” This finding might represent physiologic compensation preserving bone strength. No cohort effects were observed when 1994 and 2001 measures from similar age groups were compared. Text Tromso Tromso HighWire Press (Stanford University) Tromso ENVELOPE(16.546,16.546,68.801,68.801) American Journal of Epidemiology 162 7 633 643
institution Open Polar
collection HighWire Press (Stanford University)
op_collection_id fthighwire
language English
topic ORIGINAL CONTRIBUTIONS
spellingShingle ORIGINAL CONTRIBUTIONS
Emaus, N.
Berntsen, G. K. R.
Joakimsen, R. M.
Fønnebø, V.
Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study
topic_facet ORIGINAL CONTRIBUTIONS
description The aim of this study was to describe and compare bone mineral density (BMD) development in Norwegian women and men aged 25–44 years in a population-based, longitudinal study. BMD was measured twice at distal and ultradistal forearm sites by single x-ray absorptiometry in 258 women and 147 men (mean follow-up time, 6.4 (standard deviation, 0.6) years). At the distal site, a small annual gain of approximately 0.1% became a small loss beginning at age 34 years in men and age 36 years in women. At the ultradistal site, BMD change was predicted by age in women only, and bone loss started at age 38 years. A high degree of tracking of BMD measurements was observed for both sexes and both sites, r > 0.93. Depending on total BMD change, participants were grouped into “losers,” “nonlosers,” and “gainers,” and more than 6% lost more than the smallest detectable amount of BMD: ≥3.46% at the distal site and ≥5.14% at the ultradistal site. In both sexes, bone mineral content (grams) decreased, whereas area (centimeters squared) increased significantly in “losers” compared with “gainers.” This finding might represent physiologic compensation preserving bone strength. No cohort effects were observed when 1994 and 2001 measures from similar age groups were compared.
format Text
author Emaus, N.
Berntsen, G. K. R.
Joakimsen, R. M.
Fønnebø, V.
author_facet Emaus, N.
Berntsen, G. K. R.
Joakimsen, R. M.
Fønnebø, V.
author_sort Emaus, N.
title Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study
title_short Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study
title_full Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study
title_fullStr Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study
title_full_unstemmed Longitudinal Changes in Forearm Bone Mineral Density in Women and Men Aged 25-44 Years: The Tromso Study: A Population-based Study
title_sort longitudinal changes in forearm bone mineral density in women and men aged 25-44 years: the tromso study: a population-based study
publisher Oxford University Press
publishDate 2005
url http://aje.oxfordjournals.org/cgi/content/short/162/7/633
https://doi.org/10.1093/aje/kwi258
long_lat ENVELOPE(16.546,16.546,68.801,68.801)
geographic Tromso
geographic_facet Tromso
genre Tromso
Tromso
genre_facet Tromso
Tromso
op_relation http://aje.oxfordjournals.org/cgi/content/short/162/7/633
http://dx.doi.org/10.1093/aje/kwi258
op_rights Copyright (C) 2005, Oxford University Press
op_doi https://doi.org/10.1093/aje/kwi258
container_title American Journal of Epidemiology
container_volume 162
container_issue 7
container_start_page 633
op_container_end_page 643
_version_ 1766218504255569920