Factors Affecting Bone Density in Women

E-poster

Abstract Overview

Background. Relationship between physical activity (PA) and bone mineral density (BMD) in adults compared with other factors affecting bone is unclear.
Purpose: to clarify the relationship between PA and BMD in comparison with other factors affecting BMD in women of different ages, PA levels and diets.
Methods. Study-groups: physically active women (PAW; PA/week ≥5h; n=33); women on balanced diet for 3-years (DPW; n=34); elderly (EW; ≥65y; n=35); control group (CGW; PA/week <5h, didn’t follow diet-plan). Tools: three-day dietary recall, IPAQ-questionnaire, bone densitometry (Lunar; body composition incl. whole-body (WB), femoral neck (FN) and lumbar (L1–L4) BMD g/cm2), blood analysis, Nutridata-program assessing dietary availability of macro- and micronutrients (calcium, magnesium, vitamins B12 and D). Descriptive statistics, t-test or Mann-Whitney test, univariate and multiple linear regression analysis. Research Ethics Committee of University of Tartu (no 340/T-2).
Results. BMD of different segments was associated with different risk-factors. Belonging to PAW didn`t affect BMD; membership with DPW had positive effect on L1–L4 and FN aBMD (respectively, coef. 0.08; p<0.005; coef. 0.053; p<0.044); belonging to EW had negative effect on BMD in every region (all coef. -0.1; p<0.001). BMD wasn`t associated with dietary macro- and micronutrients (except calcium – positive effect to WB BMD), micronutrients as supplement (except the use of calcium – negatively associated with WB and LS BMD), or levels of calcium, magnesium, and vitamins B12 and D in blood. Main factor associated negatively with BMD was age (positive effect on LS, FN aBMD) and positively body composition parameters (fat-free mass had positive effect in all regions; body mass in WB and fat mass in FN aBMD).
Conclusions. In adult women, there is no association between PA and BMD.
Practical implications. In adult women, there is no association between PA and BMD, but higher muscle mass might be protective factor against osteoporosis.
Funding. THCC

Additional Authors

Name: Ãœlle Parm
Affiliation: Tartu Health Care College
Presenting Author: yes
Name: Hannaliis Luts
Affiliation: Tartu Health Care College
Presenting Author: no
Name: Ester Jaansoo
Affiliation: Tartu Health Care College
Presenting Author: no

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Information

Study Type: Other
Subtheme: Co-benefits/ non-health benefits/ SDGs
Population Group: Adults
Setting: Healthcare

Submitting Author

Anna-Liisa Tamm
Professor
Tartu Health Care College
Estonia

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