Search Results
Results 201 - 250 of 982
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Zehnacker Carol Hamilton - - 2007
PURPOSE: Osteoporosis is both preventable and treatable with exercise playing an important role in osteogenesis. The purpose of this systematic review was to determine which specific exercise programs utilizing weights were effective in maintaining or increasing bone mineral density (BMD) in postmenopausal women. METHODS: A computerized search of the MEDLINE, ...
Daly Robin M - - 2007
Regular weight-bearing exercise is widely reported to have beneficial effects on bone mineral content and areal bone mineral density during growth, but the structural basis underlying these changes remains uncertain. In young athletic children, participation in high-impact sports has been shown to enhance bone formation on the periosteal and/or endosteal ...
Specker Bonny - - 2007
Exercise and nutrition are independently recognized as important modifiable lifestyle factors essential for optimal bone health during growth. In this review, we discuss the effect of dietary calcium, vitamin D and protein alone and in combination with exercise on bone mass and strength in children and adolescents. Recent intervention studies ...
Maddalozzo Gianni F - - 2007
This study evaluated the additive effects of hormone replacement therapy (HRT) and a 1-year site-specific resistance-training (RT) program involving two free weight exercises (i.e., squat and deadlift) 2 days/week as a strategy to reverse or attenuate bone loss at the lumbar spine in early postmenopausal women. Participants from a group ...
Litmanovitz I - - 2007
Studies have previously demonstrated that brief (4 weeks) passive range-of-motion exercise is beneficial for bone development in very low birth weight (VLBW) preterm infants. However, the optimal duration of exercise for bone development in preterm infants is yet unknown. The aim of the present study was to examine the effect ...
Ianc Dorina - - 2006
We investigated the effects of calcium supplementation and physical practice on the bone ultrasound properties and trabecular microarchitecture in children. 160 children aged 8-11 were randomly allocated to active or nonactive groups and to receive either a calcium-phosphate or a placebo powder for 6 months. Skeletal status was assessed using ...
Noda Kazuhito - - 2006
Senile dementia of the neurofibrillary tangle type (SD-NFT) is characterized by numerous neurofibrillary tangles (NFT) in the hippocampal region and the absence or minimal presence of senile plaques throughout the brain. We analyzed 207 demented subjects and 68 non-demented subjects autopsied in the Hisayama study to investigate the clinicopathological aspects ...
Zernicke Ronald - - 2006
Exercise-induced mechanical loading can have potent effects on skeletal form and health. Both intrinsic and extrinsic factors contribute to bone structure and function. Mechanical simuli (e.g., strain magnitude, frequency, rate, and gradients, as well as fluid flow and shear stress) have potent influences on bone-cell cytoskeleton and associated signalling pathways. ...
Hinton Pamela S - - 2006
We investigated the impact of weight-bearing, aerobic exercise- and diet-induced weight loss on markers of bone turnover during a larger study of changes in metabolic fitness during short-term weight reduction using a repeated-measures, within-subject experimental design. Subjects (N = 19) underwent 6 weeks of energy restriction (reduced by approximately 3140 ...
Shipp Kathy M - - 2006
The "holy grail" of inquiry regarding exercise and osteoporosis has been identifying a type of exercise that builds bone. Investigation using animal models has provided many insights into how bone responds to mechanical loading, but translating these findings into an exercise prescription for patients with osteoporosis is difficult. Patients expect ...
Warner S E - - 2006
Exercise that imparts rapid, high-magnitude mechanical loading is considered to be advantageous to bone health. Previous rodent studies have suggested that swimming may also be beneficial to bone. We investigated the differential effects of exercise with and without weight bearing on cortical and trabecular bone. Forty female Sprague-Dawley rats (120 ...
Vainionpää Aki - - 2007
INTRODUCTION: Physical activity is known to enhance the mechanical competence of bone. However, information about the optimal type of exercise is limited. The aim of this study was to evaluate the contribution of jumping exercise to changes in bone geometry. METHODS: We carried out a 12-month population-based trial with 120 ...
Karinkanta S - - 2007
Summary: This study showed that combination of strength, balance, agility and jumping training prevented functional decline and bone fragility in home-dwelling elderly women. The finding supports the idea that it is possible to maintain good physical functioning by multi-component exercise program and thus postpone the age-related functional problems. INTRODUCTION: This ...
Weiler U - - 2006
The influence of short-term confinement and moderate exercise on tibia development was investigated in growing pigs (36-41 kg, 10 weeks at the beginning of the study). Animals were kept for 2 weeks either in individual crates of 0.8 m(2) ('confinement', n = 4) or kept in groups of four animals ...
Riera Manel - - 2006
INTRODUCTION: Human peritoneal mesothelial cells (HPMC) are a valuable research tool for understanding the molecular biology of several pathologies, in both monolayer and three dimensional models. We compared different methods of HPMC isolation and assessed their outcome as well as fibroblast contamination, a common problem encountered during isolation. METHODS: 1-3cm(3) ...
Martiniaková Monika - - 2006
In order to develop an identification key for distinguishing between several mammalian species, bone structure of their compact bone tissue was analyzed using qualitative and quantitative characteristics. Ninety femora of adult male humans, pigs, cows, sheep, rabbits, and rats were studied. The average area, perimeter, minimum, and maximum diameter of ...
Zwart Sara R - - 2007
Supine weight-bearing exercise within lower body negative pressure (LBNP) alleviates some of the skeletal deconditioning induced by simulated weightlessness in men. We examined this potential beneficial effect in women. Because dietary acid load affected the degree of bone resorption in men during bed rest, we also investigated this variable in ...
Tao Xiaoan - - 2007
OBJECTIVES: The objective of this study was to assess local angiogenesis and expression of VEGF in atrophic-erosive and reticular oral lichen planus (OLP). STUDY DESIGN: Microvessel density (MVD) and VEGF level in 30 OLP subjects and 7 matched controls were detected by immunohistochemistry and ELISA. RESULTS: MVD and VEGF levels ...
Mann V - - 2006
It has been shown previously using in vivo and ex vivo animal models, that cyclical mechanical stimulation is capable of maintaining osteocyte viability through the control of apoptotic cell death. Here we have studied the effect of mechanical stimulation on osteocyte viability in human trabecular bone maintained in a 3-D ...
Lenci Stefano - - 2006
This paper deals with control and anti-control of overturning of a rigid block subjected to a generic periodic excitation. Attention is focused on two relevant thresholds, corresponding to heteroclinic bifurcation and immediate overturning, and representing lower and upper bounds of the region where toppling can occur. The two opposite problems ...
Igawa Osamu - - 2006
BACKGROUND: The inferior vena cava (IVC) is obliquely connected to the right atrium (RA), and often a low-voltage area is observed in the posteroinferior RA. OBJECTIVES: The purpose of this study was investigate the size of the IVC extension into RA and its anatomic background. METHODS: We investigated 30 human ...
Hind K - - 2007
INTRODUCTION: Osteoporosis is a serious skeletal disease and as there is currently no cure, there is a large emphasis on its prevention, including the optimisation of peak bone mass. There is increasing evidence that regular weight-bearing exercise is an effective strategy for enhancing bone status during growth. This systematic review ...
Brockie Janet - - 2006
Exercise has many benefits throughout life but in later life in particular it will protect against cardiovascular disease, obesity, diabetes and cancer, and preserve musculoskeletal health and psychological wellbeing. Women as they get older are at increasing risk of osteoporosis and the aim of exercise is to slow these skeletal ...
Rubin Clinton - - 2006
BACKGROUND: exercise is recognised as a critical regulatory signal to the skeletal system, but which specific aspects of exercise are responsible for influencing bone mass and morphology and resisting fractures remains unknown. Recent data indicate that extremely low-level mechanical signals are anabolic to bone, and thus may be used, non-invasively, ...
Deong Kee Kong - - 2006
OBJECTIVE: To determine whether the postmyringoplasty tympanic membrane (TM) behaves in a similar way compared with a healthy nonoperated eardrum by calculating and comparing the epithelial migration rate and pattern. STUDY DESIGN: Prospective, nonrandomized case-control study. Each subject who has undergone a myringoplasty and with healthy contralateral TM as control ...
Välimäki V-V - - 2006
INTRODUCTION: Determinants of BUA and SOS and their changes during military service-associated physical training were studied in 196 army recruits and 50 control men, aged 18-20 years. METHODS: Heel ultrasound measurement, DXA, muscle strength test, Cooper's running test and genetic analyses were performed. Lifestyle factors were recorded. Sex steroids and ...
Verheyen Kristien - - 2006
In order to gain insight into those training regimens that can minimise the risk of fracture in athletic populations, we conducted a large epidemiological study in racehorses. Thoroughbred racehorses provide a suitable model for studying fracture development and exercise-related risk factors in physically active populations. They represent a homogeneous population, ...
Santos-Rocha R A - - 2006
BACKGROUND: Step exercise has been promoted as a low impact physical activity recommended for the improvement of cardiorespiratory and muscular fitness. This recreational activity might also be recommended to improve bone health since mechanical load plays an important role in the normal development of the skeleton. METHODS: Our main purpose ...
Inan Ozgür - - 2006
The aim of this study was to determine the effect of sandblasting and electrical discharge machining (EDM) on cast and machined titanium surfaces and titanium-porcelain adhesion. Twenty machined titanium specimens were prepared by manufacturer (groups 1 and 2). Thirty specimens were prepared with autopolymerizing acrylic resin. Twenty of these specimens ...
Davies H M S - - 2006
REASONS FOR PERFORMING STUDY: The third metacarpal bones (MC3) of racing Thoroughbreds are a common site for bone damage. The midshaft dorsal cortex (DC) of MC3 thickens in response to fast exercise. It is not clear if it changes to a shape and size that limits the peak bone strains ...
Winters-Stone Kerri M - - 2006
We studied the response of bone at specific skeletal sites to either lower body exercise alone or complemented with upper body exercise in premenopausal women. Thirty-five exercisers and 24 age-matched controls completed the 12-month study. Exercising women (N = 35) were randomly assigned to either lower body resistance plus jump ...
Hamrick M W - - 2006
Recent experimental data suggest that the anabolic response of bone to changes in physical activity and mechanical loading may vary among different skeletal elements, and even within different regions of the same bone. In order to better understand site-specific variation in bone modeling we used an experimental protocol in which ...
Chubak Jessica - - 2006
PURPOSE: To evaluate the effects of physical activity on bone mineral density, bone mineral content, and lean mass in postmenopausal, overweight/obese women. METHODS: We conducted a 12-month randomized controlled aerobic exercise intervention versus control in 173 sedentary, overweight/obese, postmenopausal women, aged 50-75 yr. The exercise prescription consisted of >or=45 min ...
Linden Christian - - 2006
This 2-year prospective controlled exercise intervention trial in 99 girls at Tanner stage 1, evaluating a school curriculum-based training program on a population-based level, showed that the annual gain in BMC, aBMD, and bone size was greater in the intervention group than in the controls. INTRODUCTION: Most exercise intervention studies ...
Le Panse B - - 2006
To test the hypothesis that chronic salbutamol intake improves performance during supramaximal exercise and to estimate the effects of this treatment on body composition, bone mass, and metabolic indices in healthy women. Fourteen female volunteers (seven sedentary and seven recreationally trained) performed a 30 second Wingate test with and without ...
Korpelainen Raija - - 2006
We conducted a 30-month population-based, randomized, controlled trial in 160 elderly women at risk for fractures on the basis of a low baseline BMD. Mainly home-based weight-bearing exercise was effective in improving strength, balance, and gait. INTRODUCTION: Evidence on the effect of exercise on extraskeletal risk factors for hip fractures ...
Crane Nicole J - - 2006
To understand early mineralization events, we studied living murine calvarial tissue by Raman spectroscopy using fibroblast growth factor 2 (FGF2)-soaked porous beads. We detected increased levels of a transient phase resembling octacalcium phosphate in sutures undergoing premature suture closure. Several calcium phosphates have been postulated as the earliest inorganic precursors ...
Choi Sunkyung - - 2006
Radioactive strontium (90Sr) is an important constituent of the complex wastes from past nuclear weapons production and has been stored in underground tanks at U.S. DOE sites (e.g., Hanford, WA). Using bulk and microfocused EXAFS spectroscopy, we examined temporal changes in solid-phase Sr speciation in kaolinite samples reacted for 1-369 ...
Farnworth Paul G - - 2006
Inhibin, a member of the TGF-beta superfamily, has been proposed to act as an inhibitor of activin and bone morphogenetic protein (BMP) by sequestering their type II receptors in nonsignaling complexes with betaglycan. This mechanism of inhibin action was tested in a mouse adrenocortical (AC) cell line by examining the ...
Specker B L - - 2006
During rapid growth, increased body weight and muscle strength result in increased loads on bone. Bone adapts to these increased strains by increasing bone modeling and remodeling. As the growth rate decreases, bone that was formed as a result of these adaptations continues to mineralize and "catch up", and bone ...
Suominen Harri - - 2006
The main function of bone is to provide the mechanical integrity for locomotion and protection; accordingly, bone mass and architecture are adjusted to control the strains produced by mechanical load and muscular activity. Age-related patterns involve peak bone mass during growth, a plateau in adulthood, and bone loss during aging. ...
Lamlom Sabah H - - 2006
At present, a carbon (C) content of 50% (w/w) in dry wood is widely accepted as a generic value; however, few wood C measurements have been reported. We used elemental analysis to investigate C content per unit of dry matter and observed that it varied both radially and vertically in ...
Nicol C J - - 2006
Management practices, stocking rate and flock size may affect laying hen welfare but there have been few replicated studies in commercial non-cage systems that investigate this. This study used a broad range of physical and physiological indicators to assess the welfare of hens in 36 commercial flocks. Six laying period ...
Lespessailles E - - 2006
Combining physical exercise with drug therapies for osteoporosis has been attempted with the aim to maximize osteogenic stimulus. Potential synergetic effects may prevent post-menopausal bone loss, or maximise gains during peak bone mass acquisition. However, research studies yielded mixed results, impeding the emergence of a consensus on the effects of ...
Kelley George A - - 2006
OBJECTIVE: We conducted a meta-analysis using individual patient data to examine the efficacy of exercise for improving bone mineral density at the femoral neck in postmenopausal women. STUDY DESIGN: Ten controlled clinical trials that included 595 subjects (aged 42-92 years) met our criteria for inclusion. Changes in femoral neck bone ...
Ozdamar Aykut - - 2006
BACKGROUND AND PURPOSE: Despite the decreased mortality in gastroschisis (Gx), patients experience postoperative intestinal hypoperistalsis, malabsorption, and shortened bowel length. The trophic effects of recombinant human erythropoietin (rEpo) in the developing small bowel have been reported, increasing the length and height of the villi, and villous surface area. This study ...
Noordam C - - 2006
BACKGROUND: An optimal treatment for tall stature in boys in terms of efficacy and safety is not available. Treatment with somatostatin analogue 201-995 (SMS) has been tried with positive short-term results. METHODS: We evaluated the effect of SMS treatment on reducing adult height. Over 2 years, 16 boys presenting to ...
Maïmoun L - - 2006
This study investigated the short-term effects of the intensity level of physical exercise on bone metabolism and related hormones. The responses of calciotropic hormones and bone biochemical markers were evaluated in seven male cyclists (mean age 24.4 years, range 20-39) during two 50-min cycling tests performed 15% below (-VT) and ...
Iki Masayuki - - 2006
To clarify whether trunk muscle strength and self-reported exercise habits predict subsequent bone loss in healthy post- menopausal women, we examined 143 community-dwelling ambulatory postmenopausal Japanese women (age: 59.9 +/- 6.5 years) without any diseases affecting bone metabolism at baseline, and followed 109 of the 143 subjects for 4 years. ...
Mayor Jordan R - - 2006
This work tested the hypothesis that ectomycorrhizas (EM) of Dicymbe corymbosa alter leaf-litter decomposition and residual litter quality in tropical forests of Guyana. Mass loss of leaf litter in litter bags was determined on three occasions, in two experiments, during a 12-month period. Paired root-exclusion plots were located randomly within ...
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