نتایج جستجو برای: bone strength
تعداد نتایج: 503455 فیلتر نتایج به سال:
Objective(s): Adipose derived stem cells (ADSCs) can be engineered to express bone specific markers. The aim of this study is to evaluate repairing tibia in animal model with differentiated osteoblasts from autologous ADSCs in alginate scaffold. Materials and Methods: In this study, 6 canine’s ADSCs were encapsulated in alginate and differentiated into osteoblasts. Alkaline phosphatase assay (A...
conclusions in issns, bone strength recovered one month after terminating stx. in igan, bone strength recovered 10 months after tapering of stx. results in issns, the bmd and s-alp levels were significantly lower in phase 1 than in phase 0; however, scores and levels returned to baseline in phase 2. in igan, bmd was significantly lower in phase 2 than in phase 0 while s-alp levels were signific...
background: exogenous phytase enhances the utilization of plant phytate phosphorus in poultry. objectives: in the present study the effects of exogenous phytase was investigated on tibia bone characteristics of white quail. methods: in a 2x2 factorial arrangement, eighty, 11-day old unsexed chicks were randomly divided into 4 treatments of 20 replicates. all birds received one of four experimen...
Background & Aims: Osteoporosis is the most common metabolic bone disease. The aim of this study was to investigate the effects of exercise therapy on balance, muscle strength, bone density and quality of life in women with primary osteopenia and osteoporosis and to compare two types of aerobic and strengthening exercises on mentioned indexes. Materials & Methods : In this clinical trial, 9...
Mikkola, Tuija Genetic and environmental contributions to bone structural strength in postmenopausal women Jyväskylä: University of Jyväskylä, 2010, 77 p. (Studies in Sport, Physical Education, and Health ISSN 0356-1070; 155) ISBN 978-951-39-4058-4 Finnish summary Diss. The purpose of this study was to investigate the genetic and environmental contributions to estimated bone structural strength...
INTRODUCTION A strong positive correlation between the apparent ultimate strength and stiffness of bone tissue has been observed for cortical bone in tension and low-density cancellous bone in compression [1]. For practical purposes, the existence of a relationship between strength and stiffness is significant in that bone strength can be predicted using non-invasive stiffness measurements. Fro...
osteoporosis as a skeletal disorder characterize by compromised bone strength predisposing a person to an increased risk of fracture. all people should be encouraged to take efforts to prevent bone loss and fractures. nutrition is one of several factors that can be modified to reduce osteoporosis risk. the purpose of this review article is assessment the role of the other nutrients the exceptio...
Bone is a dynamic tissue. It remodels, thereby maintaining serum calcium, repairing micro damage and maintaining strength. A reduction in the strength of bone leads to osteoporosis that may manifest clinically as low energy vertebral and non-vertebral fractures. The bone strength, in turn, is determined by its material, structural properties and on its remodeling potential. Commonly, osteoporos...
abstract childhood and adolescence are critical periods for the skeleton. mechanical load has then been shown to be one of the best stimuli to enhance not only bone mass, but also structural skeletal adaptations, as both contributing to bone strength. exercise prescription also includes a window of opportunity to improve bone strength in the late pre- and early peri-pubertal period. there is so...
In this paper, we review analytical and computational models of bone fracture and strength. Bone fracture is a complex phenomenon due to the composite, inhomogeneous and hierarchical structure of bone. First, we briefly summarize the hierarchical structure of bone, spanning from the nanoscale, sub-microscale, microscale, mesoscale to the macroscale, and discuss experimental observations on fail...
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