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Functional fitness and bone mineral density in the elderly
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Advisor(s)
Abstract(s)
Summary Bone quality has been associated with genetic
factors and several environmental influences. This study
suggests that although functional fitness should be consid ered in clinical assessments of bone health, body composi tion appears to have a higher relevance in the explanation of
bone health/strength in older people.
Purpose This study aims to describe the association be tween functional fitness (FF), other constitutive factors,
and bone health/strength in a large community-dwelling
sample of elderly active Portuguese.
Methods This cross-sectional study included 401 males and
401 females aged 60–79 years old. Bone mineral density
(BMD) of the total body, lumbar spine (LS), and hip region
was determined by dual-energy X-ray absorptiometry
(DXA). In addition, femur strength index (FSI) was deter mined. FF was assessed using the Senior Fitness Test.
Demographic information and a health history were
obtained by telephone interview through questionnaire.
Results Aerobic endurance and body strength were pos itively related with hip BMD region in males (0.10<r<
0.16; p<0.01–0.05) and females (0.13<r<0.28; p<
0.01). No significant correlation was found between
any FF test and LS BMD, except for upper-body
strength in females. After controlling for other constitu tive predictors (sex, age, height, body mass (BM), total
fat mass (TFM), and total lean tissue mass (TLTM)), FF
had a minor contribution only in prediction of BMD at
multisites and FSI. The total explained variance for all
determinants was moderate (R²00.35 for femoral neck
(FN) BMD, R²00.27 for LS BMD, R²00.49 total body
BMD, and R²00.22 for FSI).
Conclusions Sex, age, height, BM, TLTM, and TFM en tered as the most significant contributors for BMD and FSI.
Although FF parameters are typically considered in clinical
assessments of bone health/strength in older people, body
composition appears to have a higher relevance in the explanation of BMD and strength.
Description
Keywords
Aging Bone mineral density Functional fitness Femur strength index . Faculdade de Ciências Sociais
Citation
Gouveia, É. R., Maia, J. A., Beunen, G. P., Blimkie, C. J. R., Rodrigues, A. L., & Freitas, D. L. (2012). Functional fitness and bone mineral density in the elderly. Archives of osteoporosis, 7(1), 75-85. DOI 10.1007/s11657-012-0083-2
Publisher
Springer