scholarly journals Sustained Benefits from Previous Physical Activity on Bone Mineral Density in Males

2006 ◽  
Vol 91 (7) ◽  
pp. 2600-2604 ◽  
Author(s):  
Anna Nordström ◽  
Tommy Olsson ◽  
Peter Nordström
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Weight Bearing ◽  
High Sensitivity ◽  
Young Cohort ◽  
Mineral Density ◽  
Intensive Training ◽  
Total Hip

Abstract Context: The effect of physical activity on bone mineral density (BMD) is not well investigated longitudinally after puberty in men. Objective: Our objective was to evaluate the effect of exercise and reduced exercise on BMD after puberty in men. Design: We conducted a longitudinal study. Participants: Sixty-three healthy young athletes and 27 male controls, both with a mean age of 17 yr at baseline, participated. Also, 136 of the participants’ parents were investigated to evaluate heritable influences. Main Outcome Measures: Total body, total hip, femoral neck, and humerus BMD (grams per square centimeter) were measured at baseline and after mean periods of 27, 68, and 94 months in the young cohort. Results: BMDs of control parents and athlete parents were equal, suggesting absence of selection bias. The 23 athletes that remained active throughout the study increased BMD at all sites when compared with controls (mean difference, 0.04–0.12 g/cm2; P < 0.05) during the study period. After an average of 3 yr, 27 athletes ended their active careers. Although this group initially lost BMD at the hip compared with active athletes, the former athletes still had higher BMD than controls at the femoral neck (0.12 g/cm2; P = 0.007), total hip (0.11 g/cm2; P = 0.02), and humerus (0.10 g/cm2; P = 0.02) at the final follow-up. Conclusions: High sensitivity to physical loading persists after puberty in men. Reduced physical activity is associated with BMD loss in the first 3 yr in weight-bearing bone. Sustained benefits in BMD are preserved 5 yr after intensive training ends.

Factors Influencing Bone Mineral Density and Content in Young Girls

2006 ◽  
Vol 18 (1) ◽  
pp. 101-112 ◽  
Author(s):  
Kristin S. Ondrak ◽  
Don W. Morgan
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Femoral Neck ◽  
Body Mass ◽  
Bone Mineral ◽  
Weight Bearing ◽  
Significant Proportion ◽  
Dietary Calcium Intake ◽  
Mineral Density ◽  
Young Girls

The influence of height, body mass, daily physical activity (DPA), and dietary calcium intake (DCI) on bone mineral density (BMD) and content (BMC) was evaluated in 33 four-year-old girls. Results indicated that body mass was significantly correlated with and predictive of BMD and BMC at all sites except the femoral neck BMD. DPA and height also explained a significant proportion of the variance in femoral neck BMD and BMC of the lumbar spine and total body. DCI was not related to or predictive of BMD or BMC at any bone site. These findings highlight the importance of engaging in daily weight-bearing physical activity to promote bone health in young girls.

scholarly journals Association between renal function and bone mineral density in healthy postmenopausal Chinese women

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Shuang Li ◽  
Junkun Zhan ◽  
Yanjiao Wang ◽  
Yi Wang ◽  
Jieyu He ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Renal Function ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Chinese Women ◽  
Mineral Density ◽  
Cross Sectional ◽  
Total Hip ◽  
The Relationship ◽  
Osteoporosis Risk

Abstract Background The relationship between renal function and bone mineral density (BMD) is controversial. The aim of this study was to determine the relationship of renal function with BMD and osteoporosis risk in healthy postmenopausal Chinese women. Methods A cross-sectional study was conducted in 776 healthy postmenopausal Chinese women. Dual-energy X-ray absorptiometry was used to measure BMDs. Clinical, demographic, and biochemical data were obtained at the time of image acquisition. Estimated glomerular filtration rate (eGFR) was calculated using a Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. Results Women with eGFR levels of at least 90 ml/min/1.73m2 had a lower prevalence of osteoporosis compared with women with decreased eGFR levels (60 ml/min/1.73 m2 ≤ eGFR < 90.0 ml/min/1.73 m2). BMDs at femoral neck and total hip were significantly lower in the lower eGFR class than the higher class (0.717 ± 0.106 vs 0.744 ± 0.125 g/cm2, P < 0.01; 0.796 ± 0.116 vs 0.823 ± 0.129 g/cm2, P < 0.01, respectively). eGFR was positively correlated with BMDs at femoral neck and total hip in unadjusted analysis (P < 0.05). After controlling for age, menopausal duration and body mass index (BMI), decreased eGFR was not associated with osteoporosis risk. Conclusions After adjustments for age, menopausal duration and BMI, the decline in renal function was not independently associated with osteoporosis risk in healthy postmenopausal Chinese women.

Weight-Bearing Physical Activity and Bone Mineral Density Among Women Using Depo-Provera.

2006 ◽  
Vol 38 (Supplement) ◽  
pp. S533
Author(s):  
Stephanie M. Otto ◽  
Richard S. Farley ◽  
Jennifer L. Caputo ◽  
Don Morgan
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bone Mineral ◽  
Weight Bearing ◽  
Mineral Density ◽  
Depo Provera

scholarly journals Total and femoral neck bone mineral density and physical activity in a sample of men and women

2012 ◽  
Vol 37 (5) ◽  
pp. 947-954 ◽  
Author(s):  
Sarah M. Camhi ◽  
Peter T. Katzmarzyk
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Linear Models ◽  
Menopausal Status ◽  
Whole Body ◽  
Mineral Density ◽  
Men And Women ◽  
Total Body

Physical activity (PA), total body fat (TBF), and lean body mass (LBM) are associated with bone mineral density (BMD). However, the independent influence of PA on BMD, while controlling for body composition is not understood as well and is the purpose of the current study. Whole-body BMD (g·cm–2), femoral neck BMD (g·cm–2), TBF (kg), and LBM (kg) were measured with dual-energy X-ray absorptiometry. PA levels (total, work, sport, non-sport) were estimated using the Baecke questionnaire. General linear models determined the independent effects of PA on BMD (whole-body and femoral neck), with adjustment for age, sex, ethnicity, smoking, menopausal status (as appropriate), LBM, and TBF. These associations were also examined by sex and age group (20–34, 35–49, and 50–64 years). The sample included 802 adults (65% women; 13% African American) from the Pennington Center Longitudinal Study that were 20 to 64 years of age (mean ± SD: 46.9 ± 11.0 years). Higher sports scores were associated with higher femoral neck BMD in the total group, men and women, and in 20- to 34-year-olds and 35- to 49-year-olds, but not significant in those 50–64 years of age. Similar significant associations were found for sports score with total body BMD; however, this relationship was not significant for women or for those 50–64 years of age. Total PA had inconsistent relationships with both femoral neck BMD and total body BMD. Higher levels of sport-related PA are associated with higher femoral neck BMD; however, these relationships vary by PA domain and site of BMD measurement.

scholarly journals Reduction in femoral neck and total hip bone mineral density following hospitalisation for diabetes-related foot ulceration

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Marcel M. Nejatian ◽  
Salar Sobhi ◽  
Blake N. Sanchez ◽  
Kathryn Linn ◽  
Laurens Manning ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Fat Mass ◽  
Mineral Density ◽  
Contralateral Limb ◽  
Foot Ulceration ◽  
Total Hip ◽  
Hip Bmd

AbstractManagement of diabetes-related foot ulceration (DFU) includes pressure offloading resulting in a period of reduced activity. The metabolic effects of this are unknown. This study aims to investigate changes in bone mineral density (BMD) and body composition 12 weeks after hospitalisation for DFU. A longitudinal, prospective, observational study of 22 people hospitalised for DFU was conducted. Total body, lumbar spine, hip and forearm BMD, and total lean and fat mass were measured by dual-energy X-ray absorptiometry (DXA) during and 12 weeks after hospitalisation for DFU. Significant losses in total hip BMD of the ipsilateral limb (− 1.7%, p < 0.001), total hip BMD of the contralateral limb (− 1.4%, p = 0.005), femoral neck BMD of the ipsilateral limb (− 2.8%, p < 0.001) and femoral neck BMD of the contralateral limb (− 2.2%, p = 0.008) were observed after 12 weeks. Lumbar spine and forearm BMD were unchanged. HbA1c improved from 75 mmol/mol (9.2%) to 64 mmol/mol (8.0%) (p = 0.002). No significant changes to lean and fat mass were demonstrated. Total hip and femoral neck BMD decreased bilaterally 12 weeks after hospitalisation for DFU. Future research is required to confirm the persistence and clinical implications of these losses.

scholarly journals Bone Mineral Density and Jumping Height in Pre-Menarcheal and Post-Menarcheal Physically Active Girls

2018 ◽  
Vol 3 (82) ◽  
Author(s):  
Rita Gruodytė ◽  
Toivo Jürimäe
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Bone Health ◽  
Bone Growth ◽  
Weight Bearing ◽  
Bone Adaptation ◽  
Mineral Density ◽  
Physically Active ◽  
Vertical Jumps

Research background and hypothesis. Jumping ability correlates well with different bone values. The skeletal benefits of high-impact weight-bearing exercise have been shown to be greater when training is started prior to menarche. We hypothesized that significant differences would be apparent in the relationships between bone values and jumping height in favor of the girls’ prior menarche compared to post-menarcheal group. Research aim. The aim of the study was to investigate the relationships between jumping height and bone mineral density (BMD) in pre-menarcheal and post-menarcheal physically active girls. Research  methods.  In  total,  113  adolescent  girls  from  different  competitive  extramural  athletic  programs participated in this study. Femoral neck and lumbar spine BMD were measured. The heights of vertical jumps (i. e. countermovement jump (CMJ) and rebound jumps for 15 (RJ  15 s) and 30 (RJ  30 s) seconds) were obtained.Research results. After adjusting for major confounders (i. e. age, height, and body mass), the height of rebound jumps correlated only with femoral neck BMD and only in pre-menarcheal group (r = 0.37–0.46; p < 0.05). No correlations were found between BMD variables and jumping height in post-menarcheal girls. The height of CMJ did not correlate with measured BMD variables in the studied groups.Discussion and conclusions. Early puberty is an opportune period to increase bone adaptation to mechanical loading due to the velocity of bone growth and endocrine changes at this time. We suggest that powerful repetitive vertical jumping may be more beneficial to bone health compared to single jumping activities in physically active girls prior to menarche rather than after it.Keywords: bone health, vertical jumps, puberty.

scholarly journals POS0519 BONE MINERAL DENSITY, LEAN AND FAT MASS IN POSTMENOPAUSAL WOMEN WITH RHEUMATOID ARTHRITIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 493.2-493
Author(s):  
N. Toroptsova ◽  
O. Dobrovolskaya ◽  
A. Feklistov ◽  
O. Nikitinskaya ◽  
A. Efremova ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Body Composition ◽  
Femoral Neck ◽  
Postmenopausal Women ◽  
Bone Mineral ◽  
Fat Mass ◽  
Multivariate Linear Regression Analysis ◽  
Mineral Density ◽  
Total Hip ◽  
The Relationship

Background:The relationship between lean mass (LM), fat mass (FM) and bone mineral density (BMD) remains controversial. Some population studies have emphasized the positive association between them, while others have found an inverse relationship. RA patients are characterized by a decrease in muscle mass and an increase in fat mass. Such changes in body composition may be associated with low BMD.Objectives:To study the relationship between BMD, LM and FM in postmenopausal women with RA.Methods:68 postmenopausal women with RA (median age 59 [54; 63] years) were included in the study. BMD and body composition were evaluated using two-energy X-ray absorptiometry. Correlation analysis between body composition parameters and BMD was performed with the Spearman method, correlation coefficients R for p<0.05 are presented.Results:The average L1-L4 BMD was 0,92±0,16 g/cm2, total hip BMD - 0,84±0,15 g/cm2 and femoral neck - 0,73±0,13 g/cm2. 33 (48.5%) women had osteopenia, and 17 (25.0%) - osteoporosis (OP). Low appendicular LM was found in 5 (7.4%) and low appendicular muscle index (appendicular LM/height2, AMI) – in 10 (14.7%) patients. Overfat was revealed in 47 (69.1%) women, but only 20 (29.4%) women had BMI corresponding to obesity. The positive correlations between BMD in L1-L4, total hip and femoral neck regions and body weight (R=0.46, R=0.56 and R=0.50, respectively), trunk fat (R=0.4, R=0.51 and R=0.37, respectively), total FM (R=0.27, R=0.43 and R=0.34, respectively), trunk LM (R=0.55, R=0.54 and R=0.51, respectively), total LM (R=0.51, R=0.50 and R=0.52, respectively), appendicular LM (R=0.31, R=0.29 and R=0.37, respectively) and AMI (R=0.26, R=0.33 and R=0.51, respectively) were found out. In the multivariate linear regression analysis total LM was associated with BMD of lumbar spine (β=0.638, p=0.001) and total hip (β=0.473, p=0.008), and AMI - with femoral neck BMD (β=0.360; p=0.014). We found that FM hadn’t a significant effect on BMD in any region.Conclusion:73.5% of patients with RA had a reduced BMD, and 14.7% women – low AMI. LM was positively associated with BMDs in different regions of interest, but FM had no effect on BMD. Further researches are needed to identify associations between body composition, inflammatory activity and bone health in patients with RA.Disclosure of Interests:None declared

scholarly journals Preoperative and Postoperative Bone Mineral Density Change and Risk Factor Analysis in Patients with a GH-Secreting Pituitary Adenoma

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Li’nan Qin ◽  
Xiaopeng Guo ◽  
Lu Gao ◽  
Zihao Wang ◽  
Chenzhe Feng ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Risk Factor ◽  
Lumbar Spine ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Pituitary Adenomas ◽  
Disease Duration ◽  
Femoral Shaft ◽  
Mineral Density ◽  
Total Hip

Purpose. This study analysed changes in bone mineral density (BMD) at different sites in patients with acromegaly and postoperative BMD changes and explored risk factors associated with BMD. Methods. Clinical data of 39 patients with growth hormone- (GH-) secreting pituitary adenomas and 29 patients with nonfunctioning pituitary adenomas who were newly diagnosed in neurosurgery from January 2016 to December 2018 were retrospectively analysed, including measurements of preoperative and postoperative BMD, serum GH glucose inhibition, random GH and IGF-1, and other anterior pituitary hormones. Results. The average patient age and disease duration were 43.74 (33.41–54.07) years and 72.15 (22.82–121.48) months, respectively. Compared with patients with nonfunctioning adenomas, patients with GH-secreting pituitary adenomas had significantly higher BMDs at L1, L2, femoral neck, Ward triangle, trochanter, femoral shaft, and total hip sites (p<0.05). The BMD Z score at L1 and femoral neck sites significantly increased (p<0.05). Thirteen patients underwent re-examination of BMD 1 year postsurgery, and the BMD Z score was reduced to normal levels at L1, L2, L3, L4, L1-L4, and L2-L4 compared with preoperative levels (p<0.05). Postoperative BMD Z scores in the femoral neck and total hip were significantly increased (p<0.05). Disease duration was negatively correlated with the lumbar-spine BMD Z score. IGF-1 burden was negatively correlated with the BMD Z score at L1 and L1–L4. Multiple regression analysis showed that IGF-1 burden was a risk factor for a BMD Z score decrease at L1 and L1–L4. Conclusion. BMD in patients with GH-secreting pituitary adenomas (compared with nonfunctional adenomas) increased at L1, L2, femoral neck, Ward triangle, trochanter, femoral shaft, and total hip sites. Lumbar-spine BMD Z score recovered to normal levels postsurgically when GH and IGF-1 levels were controlled. BMD Z score was negatively correlated with disease duration and IGF-1 burden in patients with GH-secreting pituitary adenomas, and IGF-1 burden was an independent risk factor for reduced lumbar-spine BMD Z score.

scholarly journals Skeletal Development during Childhood and Adolescence and the Effects of Physical Activity

2000 ◽  
Vol 12 (2) ◽  
pp. 198-216 ◽  
Author(s):  
Han C.G. Kemper
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bone Mass ◽  
Bone Mineral ◽  
Weight Bearing ◽  
Quantitative Computed Tomography ◽  
Experimental Studies ◽  
Childhood And Adolescence ◽  
Mineral Density ◽  
Local Mechanism

This paper reviews the growth and development of skeletal mass in youth and the effects of physical activity upon the bone mass in young people. The different methods to measure the bone mass are described such as anthropometrics, radiographics, dual energy X-ray absorptiometry, quantitative computed tomography, and ultrasound. Two different mechanisms are important for the formation and plasticity of bone: a central hormonal mechanism (with estrogen production) and a local mechanism (based on mechanical forces of gravity and muscle contractions). This local mechanism is closely connected to physical activity patterns and therefore discussed in more detail. Thereafter the natural course of the development of the bone mass during youth is described, taking into account the pubertal stages of boys and girls and also the age at which the maximal bone mass (peak bone mineral density) will be reached. The last part is devoted to the effects of physical activity on bone mass based on results of randomized controlled trials. Although the number of experimental studies are scarce, significant effects of weight bearing activity and high impact strength training programs are shown on the side specific bone mineral density in both boys and girls.

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