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Bone mass following physical activity in young years: a mean 39-year prospective controlled study in men.

Tveit, Magnus LU ; Rosengren, Björn LU ; Nilsson, J-Å ; Ahlborg, Henrik LU and Karlsson, Magnus LU (2013) In Osteoporosis International 24(4). p.1389-1397
Abstract
This is a study on exercise-associated bone mineral density (BMD) which in men is maintained three decades after cessation of sports. In this prospective controlled cohort study active athletes had a BMD Z-score of 1.0 and after 39 years 0.5 to 1.2 depending on the measured region), using the same single-photon absorptiometry device, dual X-ray absorptiometry (DXA), and peripheral computed tomography (pQCT).



INTRODUCTION: The aims of this study were to prospectively evaluate BMD changes in male athletes from activity into long-term retirement and to simultaneously evaluate other bone traits.



METHODS: Bone mineral density (grams per square centimeter) was measured in 46 male athletes with a mean age... (More)
This is a study on exercise-associated bone mineral density (BMD) which in men is maintained three decades after cessation of sports. In this prospective controlled cohort study active athletes had a BMD Z-score of 1.0 and after 39 years 0.5 to 1.2 depending on the measured region), using the same single-photon absorptiometry device, dual X-ray absorptiometry (DXA), and peripheral computed tomography (pQCT).



INTRODUCTION: The aims of this study were to prospectively evaluate BMD changes in male athletes from activity into long-term retirement and to simultaneously evaluate other bone traits.



METHODS: Bone mineral density (grams per square centimeter) was measured in 46 male athletes with a mean age of 22 years (range, 15-40) by using the same single-photon absorptiometry device, both at active career and a mean of 39 years (range, 38-40) later when they had long-term retired. At follow-up, BMD was also evaluated by DXA and pQCT. Twenty-four non-athletic males of similar age served as controls. Between-group differences are presented as means with 95 % confidence intervals.



RESULTS: The active athletes (baseline) had a BMD Z-score of 1.0 (0.7, 1.4) in the femoral condyles. The retired athletes (follow-up) had a BMD Z-score of 0.5 to 1.2 depending on the measuring technique and the measured region. The tibial cortical area Z-score at follow-up was 0.8 (0.5, 1.2) and the tibial strength index Z-score 0.7 (0.4, 1.0). There were no changes in BMD Z-scores from activity to retirement, neither when estimated by the same device in different regions [∆ Z-score -0.3 (-0.8, 0.2)] nor in the same region with different devices [∆ Z-score 0.0 (-0.4, 0.4)]. The benefits remained after adjustments for anthropometrics and lifestyle. No correlation was seen with years since retirement.



CONCLUSIONS: Exercise-associated high BMD in young years seems, in men, to be maintained three decades after cessation of high-level physical activity. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Osteoporosis International
volume
24
issue
4
pages
1389 - 1397
publisher
Springer
external identifiers
  • wos:000316639600026
  • pmid:22806559
  • scopus:84876469188
  • pmid:22806559
ISSN
1433-2965
DOI
10.1007/s00198-012-2081-z
language
English
LU publication?
yes
id
7396faec-561d-42a2-b2cd-5485319a09e0 (old id 2967001)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/22806559?dopt=Abstract
date added to LUP
2016-04-01 11:06:58
date last changed
2020-07-01 01:46:28
@article{7396faec-561d-42a2-b2cd-5485319a09e0,
  abstract     = {This is a study on exercise-associated bone mineral density (BMD) which in men is maintained three decades after cessation of sports. In this prospective controlled cohort study active athletes had a BMD Z-score of 1.0 and after 39 years 0.5 to 1.2 depending on the measured region), using the same single-photon absorptiometry device, dual X-ray absorptiometry (DXA), and peripheral computed tomography (pQCT). <br/><br>
<br/><br>
INTRODUCTION: The aims of this study were to prospectively evaluate BMD changes in male athletes from activity into long-term retirement and to simultaneously evaluate other bone traits. <br/><br>
<br/><br>
METHODS: Bone mineral density (grams per square centimeter) was measured in 46 male athletes with a mean age of 22 years (range, 15-40) by using the same single-photon absorptiometry device, both at active career and a mean of 39 years (range, 38-40) later when they had long-term retired. At follow-up, BMD was also evaluated by DXA and pQCT. Twenty-four non-athletic males of similar age served as controls. Between-group differences are presented as means with 95 % confidence intervals. <br/><br>
<br/><br>
RESULTS: The active athletes (baseline) had a BMD Z-score of 1.0 (0.7, 1.4) in the femoral condyles. The retired athletes (follow-up) had a BMD Z-score of 0.5 to 1.2 depending on the measuring technique and the measured region. The tibial cortical area Z-score at follow-up was 0.8 (0.5, 1.2) and the tibial strength index Z-score 0.7 (0.4, 1.0). There were no changes in BMD Z-scores from activity to retirement, neither when estimated by the same device in different regions [∆ Z-score -0.3 (-0.8, 0.2)] nor in the same region with different devices [∆ Z-score 0.0 (-0.4, 0.4)]. The benefits remained after adjustments for anthropometrics and lifestyle. No correlation was seen with years since retirement. <br/><br>
<br/><br>
CONCLUSIONS: Exercise-associated high BMD in young years seems, in men, to be maintained three decades after cessation of high-level physical activity.},
  author       = {Tveit, Magnus and Rosengren, Björn and Nilsson, J-Å and Ahlborg, Henrik and Karlsson, Magnus},
  issn         = {1433-2965},
  language     = {eng},
  number       = {4},
  pages        = {1389--1397},
  publisher    = {Springer},
  series       = {Osteoporosis International},
  title        = {Bone mass following physical activity in young years: a mean 39-year prospective controlled study in men.},
  url          = {http://dx.doi.org/10.1007/s00198-012-2081-z},
  doi          = {10.1007/s00198-012-2081-z},
  volume       = {24},
  year         = {2013},
}