Search Results
Results 401 - 450 of 982
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Kemmler Wolfgang - - 2003
OBJECTIVE: To investigate the effect of a 2-year vigorous, combined high-impact, strength, and endurance training program on bone mineral density (BMD) determined by dual-energy x-ray absorptiometry (DXA), quantitative computed tomography (QCT), and ultrasound in early postmenopausal women with osteopenia. DESIGN: Nonrandomized controlled trial, reporting 1-year data. SETTING: Community. PARTICIPANTS: Early ...
Hatakeyama Yuriko - - 2003
PTH (7-84) has antagonistic effects on the calcemic and phosphaturic actions of PTH (1-84) whole molecule (bioPTH). Human plasma contains bioPTH and PTH (7-84)-like fragments. Using bioPTH-specific and nonspecific assays, we found that the patients with pseudohypoparathyroidism (PHP) type I with PTH-resistant hypocalcemia and hyperphosphatemia had the increased plasma levels ...
Moody Cheryl A - - 2003
Various formulations of fire-extinguishing materials, including aqueous film-forming foams (AFFFs), were used as part of fire-training exercises conducted at Wurtsmith Air Force Base (WAFB) in northeastern Michigan from the 1950s until the base was decommissioned in 1993. As a result of past fire-training exercises, AFFF-laden wastewater containing fuels, solvents, and ...
Stear Samantha J - - 2003
Osteoporosis may be prevented or delayed by maximizing peak bone mass through diet modification and physical activity during adolescence. We studied whether increases in calcium intake and physical activity effectively increase the bone mineral status of adolescent girls aged 16-18 y. We conducted a 15.5-mo study of calcium supplementation (1000 ...
Remes T T Department of Medical Biochemistry, University of Kuopio, Finland. - - 2003
Our aim was to investigate associations of the polymorphic loci of androgen receptor (AR), aromatase CYP19, and estrogen receptor alpha (ERalpha) genes with bone mineral density (BMD) in a four-year controlled randomized exercise intervention trial in Finnish middle-aged men. Additionally, we studied whether the gene polymorphisms affect circulating testosterone (T), ...
Saha Sukanta - - 2003
Several studies have reported alterations in finger and a-b ridge counts, and their derived measures of asymmetry, in schizophrenia compared to controls. Because ridges are fully formed by the end of the second trimester, they may provide clues to disturbed early development. The aim of this study was to assess ...
Cavalié H - - 2003
In ten growing male Wistar rats, isometric strength training for 69 days (3-6 times vertical gripping position on a wire-netting during 2 x 30 s, with progressive loading of the tail through a 50-200 g indwelling clip), fat mass and plasma leptin concentrations were lower on day 70 than in ...
Pajamäki Ilari - - 2003
To investigate the controversial issue whether exercise-induced positive effects on bone can be maintained after cessation of exercise, 100 5-week-old male Sprague-Dawley rats were used to assess the effects of long-term exercise (EX, treadmill running) and subsequent deconditioning (DC, free cage activity) on the femoral neck and femoral midshaft. At ...
Huang T H - - 2003
Weight bearing during exercise plays an important role in improving the mechanical properties of bone. The effect on bone of non-weight-bearing exercise such as swimming remains controversial. To investigate the effects of exercise mode on growing bone, 29 male Wistar rats (7 wk old) were randomly assigned to a running ...
Liu LiJing - - 2003
Effects of long-term exercise on volumetric bone mineral density (vBMD), bone mineral content, bone geometric properties, and the strength indexes of bone were examined in a cross-sectional study of athletes and controls. Tibias of 25 jumpers (13 women), 30 swimmers (15 women), and 25 controls (15 women), aged 18-23 yr, ...
Milliken L A - - 2003
The purpose of this study was to determine the effects of 12 months of weight bearing and resistance exercise on bone mineral density (BMD) and bone remodeling (bone formation and bone resorption) in 2 groups of postmenopausal women either with or without hormone replacement therapy (HRT). Secondary aims were to ...
Golden Neville H - - 2003
Osteopenia is a frequent and severe complication of anorexia nervosa. Once established, it is difficult to treat and is only partially reversible. Osteoporosis is a preventable disease, and intervention should begin during childhood and adolescence. Optimizing peak bone mass accrual during adolescence is essential, and an episode of anorexia nervosa ...
Falk Bareket - - 2003
BACKGROUND: Physical exercise during childhood has been shown to enhance bone mineral density, thus reducing the risk of osteoporosis. OBJECTIVE: To examine bone properties, as measured by quantitative ultrasound, in prepubertal and early-pubertal female athletes engaged in impact and nonimpact sports. DESIGN: Survey. SETTING: General community. PARTICIPANTS: Twenty-five acrobatic gymnasts, ...
Burger Joanna - - 2003
Exposure to lead prenatally and early in life affects physiological, behavioral, and intellectual development in humans and other animals. The movement and storage of lead within tissues and organs and its elimination from the body influence the amounts reaching sensitive target organs such as the developing brain. In this study, ...
Huang Yunxin - - 2003
In this paper we formulate a multi-patch multi-species model in which the per-capita emigration rate of one species depends on the density of some other species. We then focus on Turing instability to examine if and when this cross-emigration response has crucial effects. We find that the type of interaction ...
Jessup James V - - 2003
The effects of weighted vest walking and strength-training exercises on bone mineral density (BMD), balance, strength, and self-efficacy were tested in older women. Eighteen women, age 69.2 +/- 3.5 years, were randomly assigned to an exercise group (EG) (n = 9), or a sedentary control group (CG) (n = 9). ...
Iuliano-Burns Sandra - - 2003
Combining exercise with calcium supplementation may produce additive or multiplicative effects at loaded sites; thus, we conducted a single blind, prospective, randomized controlled study in pre- and early-pubertal girls to test the following hypotheses. (1) At the loaded sites, exercise and calcium will produce greater benefits than exercise or calcium ...
Ishikawa-Takata K - - 2003
BACKGROUND: Japanese women have a lower bone mass and smaller calcium intake than Caucasians. OBJECTIVE: To investigate the differences in the relationship between bone mass and lifestyle among Japanese women of different life stages. DESIGN: Cross-sectional and longitudinal investigations of the relationship between bone mass and lifestyle in Japanese women ...
von Harrach H S - - 2003
The quality of X-ray spectra from FEGTEMs has been improved by three different means: the use of beryllium shields, improved collimation and improved specimen holder geometry. The improvements lead to a significant increase in peak-to-background ratios and a reduction in spurious peaks in the EDX spectra. A double-tilt, low-background specimen ...
Smerdon William J - - 2003
During the 2001 epidemic of foot and mouth disease (FMD) in livestock in England and Wales, we discovered a corresponding decrease in laboratory reports of cryptosporidiosis in humans. Using a regression model of laboratory reports of cryptosporidiosis, we found an estimated 35% (95% confidence interval [CI] 20% to 47%) reduction ...
van de Lest Chris H A - - 2003
This study aimed at the determination of the influence of exercise on the levels of a number of bone morphogenic enzymes in subchondral bone and at the comparison of these data with other (subchondral) bone-related parameters that have been investigated in the same experimental population.Forty-three foals were reared until weaning ...
Burns Karen E - - 2003
A case of cellulitis was observed in Japanese quail (Coturnix coturnix japonica) reared for commercial meat production. This condition in Japanese quail has not been reported in the literature. This incident was the first, and to date only, occurrence of cellulitis in this processing plant. The cellulitis lesions were localized ...
Cussler Ellen C - - 2003
PURPOSE: The aim of this study was to examine the relationship between weight lifted in 1 yr of progressive strength training and change in bone mineral density (BMD) in a group of calcium-replete, postmenopausal women. METHODS: As part of a large clinical trial, 140 calcium-supplemented women, 44-66 yr old, were ...
Kai Ming Chan - - 2003
Osteoporosis is a major public health problem, affecting millions of people worldwide. The associated health care costs are growing in parallel with increases in elderly populations, and it is expected that the number of osteoporotic fractures will double over the next 50 years. The best way to address osteoporosis is ...
Webber Colin E - - 2003
Twenty-one of 46 postmenopausal women were assigned to a home-based exercise program consisting of 60 min of exercise, 3 d/wk. The 25 nonexercisers continued usual daily activities. Each woman had at least one prevalent vertebral fracture and suffered from osteoporosis as defined by the application of WHO criteria to lumbar ...
Wu Jian - - 2003
There is evidence that estrogen plays an important role in skeletal tissue in males as well as females. We have reported that phytoestrogens, such as genistein, selectively act on bone and exhibit cooperative effects on bone mass when combined with exercise in ovariectomized mice. In this study, we examined whether ...
Kemmler Wolfgang - - 2002
PURPOSE: To determine the effect of an intense exercise training on physical fitness, coronary heart disease (CHD), bone mineral density (BMD), and parameters related to quality of life in early postmenopausal women with osteopenia. METHODS: Fifty-nine fully compliant women (55.1 +/- 3.4 yr) without any medication or illness affecting bone ...
Fluckey J D - - 2002
Exposure to microgravity and/or spaceflight causes dramatic losses in both muscle and bone mass. In normal gravity, resistance exercise has been effectively used to increase muscle and bone mass. We tested a novel form of resistance exercise training using flywheel technology as a countermeasure to offset the loss of musculoskeletal ...
Karlsson Magnus - - 2002
The null hypothesis that exercise has no effect on fracture rates in old age cannot be rejected on the basis of any published, randomized, prospective data. The view that exercise reduces the number of fractures is based on prospective and retrospective, observational cohort studies and case-control studies, all hypothesis-generating, not ...
Fukuda Satoshi - - 2002
We examined the effects of running exercise on preventing decreases in bone mineral and tissue volume after heavy ion particle irradiation in rats. Male Wistar rats experienced whole-body irradiation by heavy ion particle beam (C-290 MeV) at doses of 0.5, 1.0, and 5.0 Gy and were divided into voluntary running ...
Tamelander Jerker - - 2002
Coral recruitment, following the coral bleaching episode in 1998, was studied on the Kenyan coast. Scleractinian recruits representing 31 genera from 13 families were recorded in 2001, the dominant families at all sites being the Pocilloporidae, Poritidae, and Faviidae. The highest diversity and density of scleractinian recruits was observed at ...
Cavalié H - - 2002
This paper reports that the selective beta(2)-adrenergic receptor agonist clenbuterol affects bone metabolism in growing 3-mo-old male Wistar rats treated over 8 wk. Thirty-two 3-mo-old growing Wistar rats weighing 234 +/- 2 g were assigned to a progressive isometric force, strength-training exercise program plus oral clenbuterol (2 mg x kg ...
Crevenna R - - 2003
A 48-year-old female patient suffering from advanced breast cancer with metastatic bone disease participated in an aerobic exercise program consisting of ergometer cycling three times a week for 1 year. Feasibility, safety and beneficial effects of the program were proven for the patient in this case study. VO(2)max (20.2% after ...
Bellometti Simona - - 2002
BACKGROUND: The connection between osteoarthritis (OA) and osteoporosis (OP) has attracted considerable attention but reports about bone mass density (BMD) in OA are often contradictory. Some data indicate that BMD is higher in OA patients than in healthy subjects, whereas other studies showed no differences. It has been observed that ...
Chilibeck P D - - 2002
The combined and separate effects of exercise training and bisphosphonate (etidronate) therapy on bone mineral in postmenopausal women were compared. Forty-eight postmenopausal women were randomly assigned (double blind) to groups that took intermittent cyclical etidronate; performed strength training (3 d/week) and received matched placebo; combined strength training with etidronate; or ...
Qin Ling - - 2002
OBJECTIVE: To evaluate the potential benefits of regular Tai Chi Chuan exercise on the weight-bearing bones of postmenopausal women. DESIGN: Case-control study. SETTING: University medical school in Hong Kong. PARTICIPANTS: Postmenopausal women (age range, 50-59y), including 17 self-selected regular Tai Chi Chuan exercisers (TCE) with over 4 years of regular ...
Zittermann A - - 2002
BACKGROUND: The acute effects of physical activity on intestinal calcium (Ca) uptake and on bone metabolism are not known. AIM OF THE STUDY: To investigate the consequences of an acute aerobic exercise bout on fractional Ca absorption and on biomarkers of bone turnover. METHODS: With the use of a cross ...
Vervuert I - - 2002
Seven untrained Standardbred horses were used in a training programme of 6 weeks to evaluate the effects of exercise and training on bone metabolism. The horses were exercised on a treadmill according to a standardized exercise test (SET 1: six incremental steps, 5 min duration each; start 5 m/s, increase ...
Umemura Yoshihisa - - 2002
Prolonged loading repetitions can diminish the mechanosensitivity of bones, and increased intervals between loading might restore sensitivity. This study was designed to investigate the effects of intervals between loadings or bouts on osteogenic response. Forty female Fisher 344 rats aged 5 wk were divided into a control group and three ...
Gitler Daniel - - 2002
Our laboratory has established that local activation of calpain by a transient elevation of the free intracellular calcium concentration is crucial for the induction of growth cone (GC) formation in cultured Aplysia neurons. The mechanisms and stages in which calpain is involved in the formation of a GC are not ...
Williams K L - - 2002
In this paper we consider the bias associated with parametric estimation of a univariate or bivariate Gaussian density, and also the induced bias when these Gaussian densities are used to determine a likelihood ratio. Algebraic approximations are derived that accurately predict the relative biases obtained, verification being achieved by a ...
Gréalou L - - 2002
Rib shortening or lengthening are surgical options that are used to address the cosmetic rib cage deformity in scoliosis, but can also alter the equilibrium of forces acting on the spine, thus possibly counteracting in a mechanical way the scoliotic process and correcting the spinal deformities. Although rib surgeries have ...
Nagata Mizuho - - 2002
The effect of exercise practice on the radius bone mineral density (BMD) was investigated on 480 women at the age of perimenopause and later. The BMD at the 1/3 distal site of the radius on a non-dominant hand was measured using the Dual Energy X-ray Absorptiometry method. The subjects were ...
Nielsen B D - - 2002
The use of weight-training to alter bone strength has not been investigated in horses. Recognising that bone responds to loading, we studied the effect of carrying weight on bone development during training. Seventeen horses were divided into 3 groups: controls exercised counterclockwise in a free-flow exerciser; the weight group performed ...
Kelley George A - - 2002
BACKGROUND: Low bone mineral density (BMD) at the lumbar spine is a major public health problem among postmenopausal women. We conducted a meta-analysis of individual patient data (IPD) to examine the effects of exercise on lumbar spine BMD in postmenopausal women. METHODS: IPD were requested from a previously developed database ...
Notomi Takuya - - 2002
To determine the effects of a tower climbing exercise on mass, strength, and local turnover of bone, 70 9-wk-old Sprague-Dawley rats were assigned to seven groups: a baseline control and three groups of sham-operated sedentary, orchidectomized (ORX)-sedentary and ORX-exercise rats. Rats voluntarily climbed a 200-cm tower to drink water from ...
Srinivasan Sundar S Department of Orthopedics and Sports Medicine, University of Washington, Seattle 98104-2499, - - 2002
Strategies to counteract bone loss with exercise have had fairly limited success, particularly those regimens subjecting the skeleton to mild activity such as walking. In contrast, here we show that it is possible to induce substantial bone formation with low-magnitude loading. In two distinct in vivo models of bone adaptation, ...
Karlsson Magnus - - 2002
Exercise during growth seems to build a stronger skeleton resulting in a high peak bone mineral density (BMD) in men. Exercise during adulthood produces benefits in BMD or prevents bone loss, but the changes are of minor biological significance as regards fracture reduction. However, prospective intervention studies suggest exercise to ...
MacKelvie K J - - 2002
This systematic review examines and compares the bone mineral changes in children and adolescents, as measured by dual energy x ray absorptiometry, reported in exercise intervention studies. The effects of hormonal factors and growth on bone mineral change during puberty are examined, and the possibility of a critical period during ...
Reed Adam H - - 2002
BACKGROUND: Lifestyle factors are known to affect skeletal development and integrity. Specifically, running has been reported to increase risk of fatigue fractures, whereas chronic alcohol consumption has been shown to reduce bone formation and bone mass. The combined effect of exercise and alcohol on the skeleton has yet to be ...
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