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bone mineral density adolescent

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https://www.readbyqxmd.com/read/29220384/rope-skipping-increases-bone-mineral-density-at-calcanei-of-pubertal-girls-in-hong-kong-a-quasi-experimental-investigation
#1
Amy S Ha, Johan Y Y Ng
Bone mineral accrual during puberty is important, especially in girls, because it is related to reduced risks of osteoporosis in adulthood. Previous research has shown that jumping or plyometric exercises may be effective in increasing bone mineral density in adolescents. Rope skipping is a form of activity that involves jumping, thus regular skipping may also increase bone mineral density in pubertal girls. To this end, we conducted a quasi-experimental to examine the effects of rope skipping on girls' bone mineral density and cardiovascular fitness...
2017: PloS One
https://www.readbyqxmd.com/read/29199195/effect-of-weight-bearing-exercise-to-improve-bone-mineral-density-in-children-with-cerebral-palsy-a-meta-analysis
#2
S J Kim, S-N Kim, Y-N Yang, I-S Lee, S-E Koh
BACKGROUND: Despite widespread clinical use of weight bearing exercises to manage low bone mineral density (BMD) in children and adolescents with cerebral palsy (CP), previous studies have reported heterogeneous results on the effect of weight bearing exercise on BMD. PURPOSE: We performed the current meta-analysis to assess the effects of weight bearing exercise on increasing BMD in children who have CP with low BMD. MATERIALS AND METHODS: We searched PubMed, Cochrane, and Embase from inception through to October 2016 for studies that aims to investigate the effect of weight bearing exercise on BMD in children with CP...
December 1, 2017: Journal of Musculoskeletal & Neuronal Interactions
https://www.readbyqxmd.com/read/29172413/contraception-update-progestin-only-implants-and-injections
#3
Prium Deshmukh, Karen Antell, Elizabeth J Brown
Progestin-only contraception is a popular method of birth control in the United States and worldwide. Progestin-only implants and injections allow patients access to long-term contraception with simple options for reversal or removal. The implant is one of the most effective forms of contraception and there are few contraindications. Manufacturer-led training is required to become certified in insertion and removal. The most common adverse effect of the implant is a change in menstrual bleeding patterns. Little evidence has shown weight gain or decreased bone mineral density with use...
November 2017: FP Essentials
https://www.readbyqxmd.com/read/29147750/the-association-between-childhood-fractures-and-adolescence-bone-outcomes-a-population-based-study-the-troms%C3%A3-study-fit-futures
#4
T Christoffersen, N Emaus, E Dennison, A-S Furberg, L Gracia-Marco, G Grimnes, O A Nilsen, D Vlachopoulos, A Winther, L A Ahmed
Childhood fracture may predict persistent skeletal fragility, but it may also reflect high physical activity which is beneficial to bone development. We observe a difference in the relationship between previous fracture and bone outcome across physical activity level and sex. Further elaboration on this variation is needed. PURPOSE: Childhood fracture may be an early marker of skeletal fragility, or increased levels of physical activity (PA), which are beneficial for bone mineral accrual...
November 16, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29137022/the-effect-of-whole-body-vibration-training-on-lean-mass-a-prisma-compliant-meta-analysis
#5
Hengting Chen, Jianxiong Ma, Bin Lu, Xin-Long Ma
BACKGROUND: Whole-body vibration training (WBVT) confers a continuous vibration stimuli to the body. Although some reports have discussed the effects of whole-body vibration (WBV) on bone mineral density and muscle strength, study of WBV effects on lean mass have not been determined. The purpose of the present meta-analysis was to evaluate published, randomized controlled trials (RCTs) that investigated the effects of WBVT on lean mass. METHODS: We identified only RCTs by searching databases, including Web of Science, PubMed, Scopus, Embase, and the Cochrane Library from inception to March 2017...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29093789/bone-mineral-density-and-physical-performance-of-female-patients-27-years-or-longer-after-surgery-for-adolescent-idiopathic-scoliosis
#6
Tsutomu Akazawa, Toshiaki Kotani, Tsuyoshi Sakuma, Takehide Katogi, Shohei Minami, Hisateru Niki, Yoshiaki Torii, Shigeta Morioka, Sumihisa Orita, Kazuhide Inage, Kazuki Fujimoto, Yasuhiro Shiga, Kazuhisa Takahashi, Seiji Ohtori
Study Design: Retrospective cohort study. Purpose: To assess bone mineral density (BMD) and bone metabolism ≥27 years after surgery in female patients who underwent spinal fusion for adolescent idiopathic scoliosis (AIS) during adolescence and to determine their associations with physical performance. Overview of Literature: There are no studies investigating postsurgical BMD in middle-aged AIS patients. Methods: This study included 23 patients who provided informed consent among 229 female patients with AIS who underwent spinal fusion from 1968 until 1988...
October 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29079996/prebiotics-bone-and-mineral-metabolism
#7
REVIEW
Corrie M Whisner, Luisa F Castillo
Increasing interest in functional foods has driven discovery in the area of bioactive compounds. Prebiotics are non-digestible carbohydrate compounds that, when consumed, elicit health benefits and aid in the prevention and treatment of chronic diseases. While prebiotics have been shown to improve a number of chronic, inflammatory conditions, growing evidence exists for prebiotic effects on calcium metabolism and bone health. These novel dietary fibers have been shown to increase calcium absorption in the lower intestines of both preclinical and human models...
October 27, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29046970/a-focused-evaluation-of-lumbar-spine-trabecular-bone-score-in-the-first-year-post-menarche
#8
Jodi N Dowthwaite, R Winzenrieth, N Binkley, D Krueger, T A Scerpella
Trabecular bone score, an index of lumbar spine trabecular texture, has not been explored fully in adolescent girls. Our cross-sectional analysis supported the hypothesis that "adult normal" trabecular bone score has been achieved by the end of the first year post-menarche, providing a potential screening tool, independent from bone density. INTRODUCTION: Trabecular bone score (TBS) evaluates lumbar spine (LS) trabecular texture from DXA images. Limited evidence suggests low TBS in pre-pubertal girls...
October 18, 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29022558/klinefelter-syndrome-in-childhood-variability-in-clinical-and-molecular-findings
#9
Neşe Akcan, Şükran Poyrazoğlu, Firdevs Baş, Rüveyde Bundak, Feyza Darendeliler
OBJECTIVE: Klinefelter syndrome (KS) is the most common (1/500-1/1000) chromosomal disorder in males, but only 10% of cases are identified in childhood. This study aimed to review the data of the children with KS to assess the age and reason for diagnosis, clinical and laboratory findings, as well as the presence of comorbidities. METHODS: Twenty-three KS patients were analyzed retrospectively. Age at admission, presenting symptoms, comorbid problems, height, weight, pubertal status, biochemical findings, hormone profiles, bone mineral density, and karyotype were evaluated...
October 12, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29020329/vitamin-d3-supplementation-increases-spine-bone-mineral-density-in-adolescents-and-young-adults-with-hiv-infection-being-treated-with-tenofovir-disoproxil-fumarate-a-randomized-placebo-controlled-trial
#10
Peter L Havens, Charles B Stephensen, Marta D Van Loan, Gertrud U Schuster, Leslie R Woodhouse, Patricia M Flynn, Catherine M Gordon, Cynthia G Pan, Brandy Rutledge, D Robert Harris, Georgine Price, Alyne Baker, William A Meyer, Craig M Wilson, Rohan Hazra, Bill G Kapogiannis, Kathleen Mulligan
Background: Tenofovir disoproxil fumarate (TDF) decreases bone mineral density (BMD). We hypothesized vitamin D3 (VITD3) would increase BMD in youth receiving TDF. Methods: Randomized double-blind placebo-controlled trial of directly observed VITD3 vs. placebo every 4 weeks for 48 weeks in youth ages 16-24 years with HIV, viral load <200 copies/mL, taking TDF-containing combination antiretroviral therapy (TDF-cART) for ≥180 days. Participants (N=214) received a daily multivitamin containing VITD3 400 IU and calcium 162 mg, plus monthly randomized VITD3 50,000 IU (N=109) or placebo (N=105)...
August 21, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29017892/muscle-functions-and-bone-strength-are-impaired-in-adolescents-with-type-1-diabetes
#11
Klara Maratova, Ondrej Soucek, Jana Matyskova, Zdenek Hlavka, Lenka Petruzelkova, Barbora Obermannova, Stepanka Pruhova, Stanislava Kolouskova, Zdenek Sumnik
BACKGROUND: Sarcopenia and osteoporosis are among the late complications of type 1 diabetes (T1D) in adults. Whether and to what extent musculoskeletal impairment is present in childhood and adolescence has yet to be determined. The aim of this study was to assess volumetric bone mineral density (BMD) and dynamic muscle function in adolescents with T1D and to assess the clinical and biochemical predictors of their musculoskeletal system. METHODS: Ninety-five children and adolescents (59 boys and 36 girls, mean age 16...
October 7, 2017: Bone
https://www.readbyqxmd.com/read/28982680/chronic-psychosocial-stress-disturbs-long-bone-growth-in-adolescent-mice
#12
S Foertsch, M Haffner-Luntzer, J Kroner, F Gross, K Kaiser, M Erber, S O Reber, A Ignatius
Although a strong association between psychiatric and somatic disorders is generally accepted, little is known regarding the interrelation between mental and skeletal health. While depressive disorders were shown to be strongly associated with osteoporosis and increased fracture risk, evidence from post-traumatic stress disorder (PTSD) patients is less consistent. Therefore, the present study investigated the influence of chronic psychosocial stress on bone using a well-established murine model for PTSD. 7-week-old C57BL/6N mice were subjected to chronic subordinate colony housing (CSC) for 19 days, whereas control mice were singly housed...
October 5, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28977305/assessment-of-the-late-effects-on-bones-and-on-body-composition-of-children-and-adolescents-treated-for-acute-lymphocytic-leukemia-according-to-brazilian-protocols
#13
Poliana Cristina Carmona Molinari, Henrique Manoel Lederman, Maria Lucia de Martino Lee, Eliana Maria Monteiro Caran
OBJECTIVE: To evaluate the impact of therapy on bone mineral density (BMD) and body composition in survivors of acute lymphoblastic leukemia (ALL) treated in accordance with Brazilian protocols by the Brazilian Cooperative Group of Treatment of Lymphoblastic Leukemia in Childhood (GBTLI) LLA-93 and LLA-99. METHODS: A cross-sectional study with 101 patients was performed. BMD and body composition were evaluated using bone densitometry and were interpreted according to the age group and the reference population...
January 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28930627/fitness-body-composition-and-vascular-health-in-adolescent-and-young-adult-survivors-of-paediatric-brain-cancer-and-cranial-radiotherapy
#14
Treya M Long, Shoshana R Rath, Tessa D Maroni, Karen E Wallman, Helen C Atkinson, Nicholas G Gottardo, Catherine H Cole, Catherine S Choong, Louise H Naylor
Background Survivors of paediatric brain cancer and/or cranial radiotherapy (CRT) are at an increased risk of developing serious comorbidities. Established risk factors for chronic disease include central obesity, endothelial abnormalities and diminished fitness. Objectives Here we characterised anthropometry, body composition, bone mineral density (BMD), heart rate (HR), blood pressure (BP), endothelial function, muscular strength and endurance and aerobic fitness in adolescent and young adult (AYA) survivors...
September 20, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28926843/the-genetic-basis-of-delayed-puberty
#15
S R Howard, Leo Dunkel
<br>The genetic control of puberty remains an important but mostly unanswered question. Late pubertal timing affects over 2% of adolescents and is associated with adverse health outcomes including short stature, reduced bone mineral density and compromised psychosocial health. Self-limited delayed puberty (DP) is a highly heritable trait, which often segregates in an autosomal dominant pattern; however, its neuroendocrine pathophysiology and genetic regulation remain unclear. Some insights into the genetic mutations that lead to familial DP have come from sequencing genes known to cause GnRH deficiency, most recently via next generation sequencing, and others from large-scale genome wide association studies in the general population...
September 18, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28902628/physical-activity-and-bone-mineral-density-at-the-femoral-neck-subregions-in-adolescents-with-down-syndrome
#16
Ángel Matute-Llorente, Alejandro González-Agüero, Germán Vicente-Rodríguez, Luís B Sardinha, Fátima Baptista, José A Casajús
BACKGROUND: Low bone mineral density (BMD) has been frequently described in subjects with Down syndrome (DS). Reduced physical activity (PA) levels may contribute to low BMD in this population. The objective of the study was to investigate whether PA levels were related to the femoral neck bone mass distribution in a sample of 14 males and 12 females with DS aged 12-18 years. METHODS: BMD was evaluated by dual energy X-ray absorptiometry (DXA) at the integral, superolateral and inferomedial femoral neck regions and PA levels were assessed by accelerometry...
October 26, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28893644/high-bone-mass-due-to-novel-lrp5-and-amer1-mutations
#17
Alice Costantini, Päivi Kekäläinen, Riikka E Mäkitie, Outi Mäkitie
WNT signaling is a key regulator of bone metabolism and its increased or decreased activity leads to skeletal disorders. Here we describe two patients with high bone mass (HBM) caused by novel mutations in two different WNT pathway components. The first patient is a 53-year-old male with HBM. He was diagnosed at adult age based on significantly increased bone mineral density (BMD). He has undergone several surgeries due to excessive bone in ear canals, bilateral jaw exostoses and mandibular tori. Radiographs show severe cortical thickening of cranial and long bones...
September 8, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28884881/effects-of-a-randomized-weight-loss-intervention-trial-in-obese-adolescents-on-tibia-and-radius-bone-geometry-and-volumetric-density
#18
Jennifer C Kelley, Nicolas Stettler-Davis, Mary B Leonard, Douglas Hill, Brian H Wrotniak, Justine Shults, Virginia A Stallings, Robert Berkowitz, Melissa S Xanthopoulos, Elizabeth Prout-Parks, Sarah B Klieger, Babette S Zemel
Obese adolescents have increased fracture risk, but effects of alterations in adiposity on bone accrual and strength in obese adolescents are not understood. We evaluated 12-month changes in trabecular and cortical volumetric bone mineral density (vBMD) and cortical geometry in obese adolescents undergoing a randomized weight management program, and investigated the effect of body composition changes on bone outcomes. Peripheral quantitative CT of the radius and tibia, and whole body DXA scans were obtained at baseline, six and 12 months in 91 obese adolescents randomized to standard care versus behavioral intervention for weight loss...
September 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28882565/evidence-of-disordered-calcium-metabolism-in-adolescent-girls-with-type-1-diabetes-an-observational-study-using-a-dual-stable-calcium-isotope-technique
#19
David R Weber, Kimberly O O'Brien, George J Schwartz
Type 1 diabetes (T1D) is associated with skeletal abnormalities including low bone density and increased fracture risk. The pathophysiology underlying T1D related skeletal fragility remains unknown. The objective of this study was to use a dual-stable calcium isotope method to investigate the effects of T1D on calcium absorption and estimated calcium retention in adolescent females. Twenty adolescent females with T1D were admitted for a 24-h calcium absorption study using oral ((44)Ca) and intravenous ((42)Ca) stable isotopes for determination of percent gastrointestinal calcium absorption and estimated calcium retention...
December 2017: Bone
https://www.readbyqxmd.com/read/28875607/the-role-of-overweight-and-obesity-on-bone-health-in-korean-adolescents-with-a-focus-on-lean-and-fat-mass
#20
Hwa Young Kim, Hae Woon Jung, Hyunsook Hong, Jae Hyun Kim, Choong Ho Shin, Sei Won Yang, Young Ah Lee
As the associations between pediatric overweight/obesity and bone health remain controversial, we investigated the effects of overweight/obesity as well as lean mass (LM) and fat mass (FM) on bone parameters in adolescents. Bone parameters were evaluated using dual-energy X-ray absorptiometry (DXA) data of 982 adolescents (aged 12-19 years) from the Korea National Health and Nutrition Examination Survey (2009-2010). Z-scores for LM, FM, bone mass, bone mineral density (BMD), and bone mineral apparent density (BMAD) using Korean pediatric reference values were used for analysis...
October 2017: Journal of Korean Medical Science
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