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.

Lean Body Mass and Weight-Bearing Activity in the Prediction of Bone Mineral Density in Physically Active Men

2009 ◽  
Vol 23 (2) ◽  
pp. 427-435 ◽  
Author(s):  
R Scott Rector ◽  
Robert Rogers ◽  
Meghan Ruebel ◽  
Matthew O Widzer ◽  
Pamela S Hinton
Keyword(s):  
Bone Mineral Density ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Weight Bearing ◽  
Mineral Density ◽  
Physically Active

scholarly journals Adipocytokine and ghrelin levels in relation to bone mineral density in physically active older women: longitudinal associations

2009 ◽  
Vol 160 (3) ◽  
pp. 381-385 ◽  
Author(s):  
Jaak Jürimäe ◽  
Tatjana Kums ◽  
Toivo Jürimäe
Keyword(s):  
Bone Mineral Density ◽  
Body Composition ◽  
Lumbar Spine ◽  
Femoral Neck ◽  
Older Women ◽  
Bone Mineral ◽  
Total Variance ◽  
Mineral Density ◽  
Physically Active ◽  
Independent Variables

PurposeWe investigated the relationship between the decrease in bone mineral mass (BMC) and bone mineral density (BMD) values with baseline adipocytokine and ghrelin concentrations in physically active postmenopausal women.MethodsLeptin, adiponectin, ghrelin, BMC, BMD and different body composition values were measured in 35 women (age: 69.7±6.0 years) before and after a 12-month prospective study period.ResultsSignificant (P<0.05) decreases in fat-free mass (FFM) (by 2.56%) and BMC (by 1.63%) and increases in adiponectin (by 14.8%) were seen in older females as a result of the study period. The independent variables that were associated with decreases in total BMC were baseline fat mass (FM) and adiponectin explaining 30.6% (R2×100) of the total variance. In another model, baseline FFM and leptin were the independent variables that explained 20.6% (P<0.05) of the total variance in the decreases in total BMD value. The variables that were associated with decreases in femoral neck BMD were FM and leptin (R2=0.102;P<0.05), while the independent variables were baseline trunk fat:leg fat ratio and adiponectin in the model with decreases in lumbar spine BMD as the dependent variable, and accounted for 13.1% (P<0.05) of the decreases in BMD variance.ConclusionsInitial adiponectin concentration together with specific body composition characteristics predicted loss in BMC and lumbar spine BMD values, while initial leptin concentration together with specific body composition parameters determined the loss in total and femoral neck BMD values in physically active older women.

scholarly journals Oestrogen replacement improves bone mineral density in oligo-amenorrhoeic athletes: a randomised clinical trial

2018 ◽  
Vol 53 (4) ◽  
pp. 229-236 ◽  
Author(s):  
Kathryn E Ackerman ◽  
Vibha Singhal ◽  
Charumathi Baskaran ◽  
Meghan Slattery ◽  
Karen Joanie Campoverde Reyes ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Ethinyl Estradiol ◽  
Weight Bearing ◽  
Vitamin D Supplementation ◽  
Normal Weight ◽  
Mineral Density ◽  
Z Scores ◽  
The Impact

ObjectiveNormal-weight oligo-amenorrhoeic athletes (OAA) are at risk for low bone mineral density (BMD). Data are lacking regarding the impact of oestrogen administration on bone outcomes in OAA. Our objective was to determine the effects of transdermal versus oral oestrogen administration on bone in OAA engaged in weight-bearing activity.Methods121 patients with OAA aged 14–25 years were randomised to receive: (1) a 17β-estradiol transdermal patch continuously with cyclic oral micronised progesterone (PATCH), (2) a combined ethinyl estradiol and desogestrel pill (PILL) or (3) no oestrogen/progesterone (NONE). All participants received calcium and vitamin D supplementation. Areal BMD was assessed at the lumbar spine, femoral neck, total hip and total body less head using dual-energy X-ray absorptiometry at baseline, 6 and 12 months. Intention-to-treat (ITT) and completers analyses were performed.ResultsRandomised groups did not differ for age, body mass index or BMD Z-scores at baseline. For ITT analysis, spine and femoral neck BMD Z-scores significantly increased in the PATCH versus PILL (p=0.011 and p=0.021, respectively) and NONE (p=0.021 and p=0.033, respectively) groups, and hip BMD Z-scores significantly increased in the PATCH versus PILL group (p=0.018). Similar findings were noted in completers analysis.ConclusionTransdermal estradiol over 12 months improves BMD in young OAA, particularly compared with an ethinyl estradiol-containing contraceptive pill/oral contraceptives.Trial registration numberNCT00946192; Pre-results

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 &lt; 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.

Bone Mineral Density in Elite DanceSport Athletes

2016 ◽  
Vol 31 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Helena Kruusamäe ◽  
Katre Maasalu ◽  
Jaak Jurimäe
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Body Fat ◽  
Bone Mineral ◽  
Weight Bearing ◽  
Whole Body ◽  
Percent Body Fat ◽  
Mineral Density ◽  
Same Gender ◽  
Body Bone

This study compared bone mineral density (BMD) variables of female and male elite dancesport athletes with untrained control subjects of the same gender. Sixty-six elite dancesport athletes (M 33, F 33) and 64 untrained controls (M 34, F 31) participated in this study. Elite dancesport athletes were dancing couples competing at the international level. Whole-body bone mineral content and whole-body, forearm, lumbar-spine, and femoral-neck BMD, as well as whole-body fat mass and fat free mass, were measured by dual-energy X-ray absorptiometry. There were no differences (p>0.05) in height and body mass between dancers and controls of the same gender, but percent body fat was lower (p<0.05) in dancers of both genders than in untrained controls. Elite dancesport athletes had significantly higher femoral-neck BMD, and male dancers also higher whole-body BMD values when compared with controls of the same gender. All other measured bone mineral values did not differ between the groups of the same gender. In addition, training experience was positively correlated with whole-body BMD (r=0.27; p<0.05) in dancesport athletes. Based on this study, it can be concluded that elite dancesport athletes have higher BMD values at the weight-bearing site (femoral-neck BMD), while other measured areas and whole-body bone mineral values do not differ from the corresponding values of healthy sedentary controls of the same gender. According to our results, low BMD is not an issue for elite female dancesport athletes, despite their lower percent body fat values.

scholarly journals Osteoporosis and lifestyle medicine

2021 ◽  
Vol 14 (2) ◽  
pp. 155-165
Author(s):  
Arjun Bharat Mahadik ◽  
Ashok Bhimrao Giri ◽  
Akshay Sonaji Bhambre ◽  
Swapnil Ashok Mundhe ◽  
Ramdas D. Shinde
Keyword(s):  
Bone Mineral Density ◽  
Alcohol Consumption ◽  
Bone Mineral ◽  
Weight Bearing ◽  
Sun Exposure ◽  
Primary Osteoporosis ◽  
Mineral Density ◽  
Physically Active ◽  
Average Value ◽  
T Score

Osteoporosis is a major public health threat in this 21st century. It has high prevalence among postmenopausal women & elder patients (age > 60 years). It is a skeletal disorder characterized by compromised bone strength and suffer having greater chances of fractures. Osteoporosis is a condition where bones became weak & brittle that may increase chances of fracture in the patients. According to the WHO criteria, osteoporosis is defined as a bone mineral density (BMD) that lies 2.5 standard deviations or more below the average value for young healthy women (a T-score of <-2.5 SD). Osteoporosis is occurs due to too much bone mineral density is decreased that results into the changes in the structure of bone. Etiological factors includes advanced age, sex (women > male), sedentary lifestyle, minimal/ absence of sun exposure, smoking, alcohol consumption, hormonal imbalance and disease conditions such as diabetes, malignancies (multiple myeloma, lymphoma, leukemia). The diagnosis of condition must be confirmed by using spine dual energy X- ray absorptiometry (DXA) with WHO T-score thresholds. Osteopenia or low bone mass is having T-score of –1 to -2.4 & on the basis of T score, it will be classified in to two types that is primary and secondary osteoporosis. Primary osteoporosis more common in disease such as postmenopausal osteoporosis (type1) and senile osteoporosis (type2). It has severe morbid consequences, the prevention and management of this condition and associated fractures is considered to the essential to the maintenance of health status or quality of life (QoL) of patient. Patient can prevent to suffer from this condition by applying various tools of lifestyle medicines i.e. staying physically active or doing weight bearing exercises. Smoking cessation, moderate alcohol consumption are also became major approaches to manage or prevent occurrence of condition. Nutritious diet rich in calcium, vitamin D, Vitamin A, Vitamin C and other nutrition also play a key role in the management or prevention of disease.

scholarly journals Effect of Simvastatin and Atorvastatin on Serum Vitamin D and Bone Mineral Density in Hypercholesterolemic Patients: A Cross-Sectional Study

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Abrar Thabit ◽  
Abdullah Alhifany ◽  
Razan Alsheikh ◽  
Sameh Namnqani ◽  
Ameen Al-Mohammadi ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Bone Health ◽  
25Ohd Level ◽  
Mineral Density ◽  
Cross Sectional ◽  
Serum 25Ohd ◽  
Significant Difference

Background. Besides lipid-lowering effect of statins, they have been shown to have nonlipid lowering effects, such as improving bone health. An improvement in bone mineral density (BMD) has been indicated in some studies after the use of statins, in addition to an increase in 25-hydroxyvitamin D (25OHD) level. The aim of this study is to explore the association between statins and bone health taking into consideration 25OHD level and BMD.Methods. This is a randomized, cross-sectional comparative study. Subjects were divided into two groups, hypercholesterolemic participants taking simvastatin or atorvastatin as the study group and a matched control group not taking statins. All participants were assessed for serum 25OHD and BMD at lumbar spine and femoral neck.Results. A total of 114 participants were included in the study, 57 participants in each group. Results of serum 25OHD showed no significant difference between study and control groups (P=0.47), while BMD results of lumbar spine and femoral neck showed significant difference (P=0.05and 0.03, resp.).Conclusion. Simvastatin and atorvastatin, at any dose for duration of more than one year, have no additive effect on 25OHD level but have a positive effect on the BMD.

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 Bone Mineral Density and Osteoporosis after Preterm Birth: The Role of Early Life Factors and Nutrition

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Claire L. Wood ◽  
Alexander M. Wood ◽  
Caroline Harker ◽  
Nicholas D. Embleton
Keyword(s):  
Bone Mineral Density ◽  
Preterm Birth ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Bone Health ◽  
Early Life ◽  
Bone Growth ◽  
Current Evidence ◽  
Mineral Density ◽  
Early Life Factors

The effects of preterm birth and perinatal events on bone health in later life remain largely unknown. Bone mineral density (BMD) and osteoporosis risk may be programmed by early life factors. We summarise the existing literature relating to the effects of prematurity on adult BMD and the Developmental Origins of Health and Disease hypothesis and programming of bone growth. Metabolic bone disease of prematurity and the influence of epigenetics on bone metabolism are discussed and current evidence regarding the effects of breastfeeding and aluminium exposure on bone metabolism is summarised. This review highlights the need for further research into modifiable early life factors and their effect on long-term bone health after preterm birth.

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