Bone mineral density of a native population of Argentina with low calcium intake and heavy physical activity

Bone ◽  
1996 ◽  
Vol 18 (1) ◽  
pp. S115
Author(s):  
A Spindler ◽  
E Lucero ◽  
A Berman ◽  
S Paz ◽  
E Vega ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bone Mineral ◽  
Calcium Intake ◽  
Native Population ◽  
Mineral Density ◽  
Low Calcium

Correlates and Determinants of Bone Mineral Density in Prepubertal Girls

2002 ◽  
Vol 14 (4) ◽  
pp. 345-357 ◽  
Author(s):  
Peter N. Wiebe ◽  
Cameron J.R. Blimkie ◽  
Nathalie Farpour-Lambert ◽  
Julie Briody ◽  
Helen Woodhead ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bone Mineral ◽  
Fat Mass ◽  
Calcium Intake ◽  
Physical Activity Level ◽  
Linear Regression Analysis ◽  
Activity Level ◽  
Dietary Calcium Intake ◽  
Mineral Density

The correlates and determinants of total body (TB), femoral neck (FN), greater trochanter (GT) and leg areal bone mineral density (aBMD), and FN volumetric (vol) BMD were investigated in 42 healthy 6–10-year-old girls. Predictor variables included age, height, weight, lean tissue mass (LTM), fat mass, percent body fat, physical activity level, calcium intake, isokinetic knee flexion and extension strength and endocrine (E2) status. Bone density and body composition were determined by dual energy-x-ray absorptiometry (DEXA), and pubertal status was self-determined. LTM, weight, age, knee extensor strength and fat mass were significantly correlated (Pearson correlation coefficients; 0.36 £ r ‡ 0.62) with TBaBMD. These same variables with the addition of height and knee flexor strength were significantly correlated (0.33 £ r ‡ 0.77) with leg aBMD. Only LTM correlated significantly with FNaBMD and none of the independent variables correlated with FNvolBMD or GTaBMD. Only LTM entered as a significant predictor in multiple linear regression analysis (R2 = 46.7%) for TBaBMD. In conclusion, estradiol status, dietary calcium intake and physical activity level appeared not to be important predictors of BMD in this population, whereas LTM was consistently correlated with most BMD measures and was the single significant determinant of TBaBMD in this study.

Predictors of bone mineral density in a convenience sample of young Caucasian adults living in southern Ontario

2012 ◽  
Vol 37 (4) ◽  
pp. 706-714 ◽  
Author(s):  
Laura E. Chouinard ◽  
Janis Randall Simpson ◽  
Andrea C. Buchholz
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Body Mass ◽  
Bone Mineral ◽  
Bone Health ◽  
Calcium Intake ◽  
Health Concern ◽  
Mineral Density ◽  
Southern Ontario ◽  
Men And Women

Osteoporosis is a major public health concern in Canada and worldwide. Although much is known about bone health in older adults, little is known about bone health in young, healthy Canadian men and women. The objectives of this research were to describe bone mineral density (BMD) of young, healthy adults living in southern Ontario, Canada, and to identify predictors of BMD in this population. Two-hundred and fifty-eight Caucasian men and women aged 18–33 years completed health and physical activity questionnaires along with a calcium and vitamin D specific food frequency questionnaire. Height and mass were measured. BMD of the total hip, femoral neck, spine, and total body was measured using dual energy X-ray absorptiometry. Among men, body mass, weight-bearing physical activity, and calcium intake were significant predictors of BMD. Among women, body mass, calcium intake, and family history of osteoporosis significantly predicted log BMD. The predictors of BMD in young Canadian men and women identified in this study may inform the development of longitudinal studies designed to examine the influence of lifestyle factors on BMD in young adults.

scholarly journals Low bone mineral density following gastric bypass is not explained by lifestyle and lack of exercise

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Katharina Stevens ◽  
Hella Hultin ◽  
Per Hellman ◽  
Magnus Sundbom
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bariatric Surgery ◽  
Gastric Bypass ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Calcium Intake ◽  
Lifestyle Factors ◽  
Mineral Density ◽  
Study Participants

Abstract Background Bariatric surgery, Roux-en-Y gastric bypass (RYGBP) in particular, is associated with weight loss as well as low bone mineral density. Bone mineral density relies upon multiple factors, some of which are lifestyle factors. The aim of this study was to compare lifestyle factors in order to eliminate them as culprits of the suspected difference in BMD in RYGBP operated and controls. Materials and methods Study participants included 71 RYGBP-operated women (42.3 years, BMI 33.1 kg/m2) and 94 controls (32.4 years, BMI 23.9 kg/m2). Each completed a DEXA scan, as well as survey of lifestyle factors (e.g. physical activity in daily life, corticosteroid use, and calcium intake). All study participants were premenopausal Caucasian women living in the same area. Blood samples were taken in RYGBP-patients. Results BMD was significantly lower in RYGBP, femoral neck 0.98 vs. 1.04 g/cm2 compared to controls, despite higher BMI (present and at 20 years of age) and similar physical activity and calcium intake. In a multivariate analysis, increased time since surgery and age were negatively associated with BMD of the femoral neck and total hip in RYGBP patients. Conclusion Despite similar lifestyle, RYGBP was followed by a lower BMD compared to controls. Thus, the reduced BMD in RYGBP cannot be explained, seemingly nor prevented, by lifestyle factors. As the reduction in BMD was associated with time since surgery, strict follow-up is a lifelong necessity after bariatric surgery, and especially important in younger bariatric patients.

scholarly journals Low Bone Mineral Density Following Gastric Bypass Is Not Explained by Lifestyle and Lack of Exercise

2021 ◽  
Author(s):  
Hella Hultin ◽  
Katharina Stevens ◽  
Magnus Sundbom ◽  
Per Hellman
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bariatric Surgery ◽  
Gastric Bypass ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Calcium Intake ◽  
Lifestyle Factors ◽  
Mineral Density ◽  
Study Participants

Abstract Background: Bariatric surgery, Roux-en-Y gastric bypass (RYGBP) in particular, is associated with weight loss as well as low bone mineral density. Bone mineral density relies upon multiple factors, some of which are lifestyle factors. The aim of this study was to compare lifestyle factors in order to eliminate them as culprits of the suspected difference in BMD in RYGBP operated and controls. Materials and Methods: Study participants included 71 RYGBP-operated women (42.3 yrs, BMI 33.1) and 94 controls (32.4 years, BMI 23.9). Each completed a DEXA scan, as well as survey of lifestyle factors (e.g. physical activity in daily life, corticosteroid use, and calcium intake). All study participants were premenopausal Caucasian women living in the same area. Blood samples were taken in RYGBP-patients.Results: BMD was significantly lower in RYGBP, femoral neck 0.98 vs. 1.04 g/cm2 compared to controls, despite higher BMI (present and at 20 years of age) and similar physical activity and calcium intake. In a multivariate analysis, increased time since surgery and age were negatively associated with BMD of the femoral neck and total hip in RYGBP patients. Conclusion: Despite similar lifestyle, RYGBP was followed by a lower BMD compared to controls. Thus, the reduced BMD in RYGBP cannot be explained, seemingly nor prevented, by lifestyle factors. As the reduction in BMD was associated with time since surgery, strict follow-up is a lifelong necessity after bariatric surgery, and especially important in younger bariatric patients.

scholarly journals Dietary Calcium Intake in a Cohort of Individuals Evaluated for Low Bone Mineral Density: A Multicentre Italian Study

2020 ◽  
Author(s):  
Elisa Cairoli ◽  
Carmen Aresta ◽  
Luca Giovanelli ◽  
Cristina Eller-Vainicher ◽  
Silvia Migliaccio ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
At Risk ◽  
Bone Mineral ◽  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Idiopathic Hypercalciuria ◽  
Mineral Density ◽  
Low Bone Mineral Density ◽  
Low Calcium

A low calcium intake is associated with an increased fracture risk. We assessed the dietary calcium intake in a cohort of Italian individuals evaluated for low bone mineral density (BMD). A 7-day food-frequency questionnaire was administered to 1793 individuals consecutively referred at a Centre of the Italian Society for Osteoporosis, Mineral Metabolism and Skeletal Diseases for low BMD. In 30.3% (544/1793) and 20.9% (374/1793) of subjects the calcium intake was inadequate ( <700 mg/day) and adequate (>1200 mg/day), respectively. Patients with calcium intake <700 mg/day showed a higher prevalence of diabetes mellitus, idiopathic hypercalciuria and food allergy/intolerance (8.1%, 5.1%, 7.2%, respectively) than patients with calcium intake >700 mg/day (5.3%, 3.0%, 4.1%, respectively, p<0.04 for all comparisons), also after adjusting for age, gender and BMI. In 30.3% of fractured subjects the calcium intake was <700 mg/day. In Italy, a low calcium intake is highly prevalent in individuals at risk for low BMD. Importantly, an inadequate calcium intake is highly prevalent even in patients with history of fragility fractures. Only about a fifth of patients at risk for low BMD reported an adequate calcium intake

Effect of Calcium Intake, Tennis Playing, and Body Composition on Bone-Mineral Density of Brazilian Male Adolescents

2008 ◽  
Vol 18 (5) ◽  
pp. 524-538 ◽  
Author(s):  
Claudia Ridel Juzwiak ◽  
Olga Maria Silverio Amancio ◽  
Maria Sylvia Souza Vitalle ◽  
Vera Lúcia Szejnfeld ◽  
Marcelo Medeiros Pinheiro
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Body Composition ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Calcium Intake ◽  
Mineral Density ◽  
Tennis Players ◽  
Dietary Nutrient

In this prospective, cross-sectional study male adolescent tennis players (44) and nonathletic controls (32) were evaluated to determine the effects of physical activity, dietary nutrient intakes, sexual maturation, and body composition on bone-mineral density (BMD). Dietary nutrient intakes and physical activity expenditure were estimated by 4-d diaries. Total body composition, bone-mineral content (BMC), and BMD (L1–L4, femur, and nondominant forearm) were assessed by dual-energy X-ray absorptiometry. Tennis players had significantly greater lean body mass (mean [SEM] 50.6 [1.6] kg vs. 45.1 [1.7] kg, p = .022), trochanter BMD (1.0 [0.02] g/cm2 vs. 0.9 [0.03] g/cm2, p = .032), and dominant forearm BMC (173.7 [7.4] g vs. 146.5 [9.3] g) but lower BMD in the nondominant forearm (0.7 [0.02] g/cm2 vs. 0.8 [0.03] g/cm2, p = .028). Daily average calcium intake was below the recommendation in both groups. No correlation was found between BMD and calcium intake and exercise. Lean body mass was the best predictor of BMD and BMC for both tennis players and controls (R2 = .825, .628, and .693 for L1–L4, total femur, and nondominant forearm, respectively). Based on these results the authors conclude that lean body mass is the best predictor of BMD and BMC for both tennis players and others. Tennis exerts a site-specific effect, and training should focus on ways minimize this effect. Although calcium intake showed no effect on BMD, nutrition education for young athletes should focus on promoting a balanced diet, providing energy and nutrients in adequate amounts.

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