Search Results
Results 451 - 500 of 982
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Hans D - - 2002
Many studies have been done involving exercise, impact loading, and the effect on BMD. In some of these studies, particularly those involving outpatient activity, compliance and the specific parameters of an individual's impact loading have been difficult to monitor effectively. In this study, an individual, home-use platform was used to ...
Gordon Catherine M - - 2002
OBJECTIVE: To clarify the role of physiologic regulators of bone turnover in patients with anorexia nervosa (AN). STUDY DESIGN: Adolescent girls with AN (n = 61) had anthropometric, nutrition, and exercise data acquired, and bone mineral density (BMD) and body composition measured by dual energy x-ray absorptiometry. Serum samples were ...
Warren Michelle P - - 2002
Few longitudinal studies have investigated the effects of amenorrhea and amenorrhea plus exercise on bone mineral density (BMD) of young women. We carried out a 2-yr comparison of dancers and nondancers, both amenorrheic and normal, that investigated the role of hypothalamic amenorrhea on bone in this context. We studied 111 ...
Marscher Alan P - - 2002
Accretion of gas onto black holes is thought to power the relativistic jets of material ejected from active galactic nuclei (AGN) and the 'microquasars' located in our Galaxy. In microquasars, superluminal radio-emitting features appear and propagate along the jet shortly after sudden decreases in the X-ray fluxes. This establishes a ...
Sinaki M - - 2002
The long-term protective effect of stronger back muscles on the spine was determined in 50 healthy white postmenopausal women, aged 58-75 years, 8 years after they had completed a 2 year randomized, controlled trial. Twenty-seven subjects had performed progressive, resistive back-strengthening exercises for 2 years and 23 had served as ...
Iwamoto Jun - - 2002
OBJECTIVES: To determine whether etidronate could prevent or restore bone loss after cessation of exercise in postmenopausal osteoporotic women. DESIGN: Thirty-five postmenopausal osteoporotic women were studied. Exercise consisted of daily brisk walking and gymnastic training. The changes in the lumbar bone mineral density measured by dual energy x-ray absorptiometry were ...
Weldon J Kenneth JK - - 2002
Immediate sealing of furcation perforations enhances the repair process. The purpose of this study was to longitudinally compare the ability of mineral trioxide aggregate (MTA) and Super-EBA to seal furcation perforations. Fifty-one extracted human maxillary molars were decoronated 3 mm above the CEJ, and the roots were amputated 3 mm ...
Tarnowski Catherine P - - 2002
Raman microspectroscopy is a nondestructive vibrational spectroscopic technique that permits the study of organic and mineral species at micron resolution, offers the ability to work with hydrated and dehydrated specimens in vivo or in vitro, and requires minimal specimen preparation. We used Raman microspectroscopy to determine the composition of the ...
Pleşca-Manea Luminiţa - - 2002
Our study investigated the effects of Melilotus officinalis L. extract, containing 0.25% coumarin, on acute inflammation induced with oil of turpentine in male rabbits. The results were compared with those from a group treated with hydrocortisone sodium hemisuccinate and one injected with coumarin before inflammation was induced. The effects were ...
Grinspoon Steven S Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA 02114, USA. - - 2002
Over 90% of women with anorexia nervosa demonstrate osteopenia, and almost 40% demonstrate osteoporosis at one or more skeletal sites. In addition to estrogen deficiency causing an increase in bone resorption, nutritional effects on the GH-IGI-I axis may contribute to the severe bone loss in this population by decreasing bone ...
Burr David B - - 2002
The signals that allow bone to adapt to its mechanical environment most likely involve strain-mediated fluid flow through the canalicular channels. Fluid can only be moved through bone by cyclic loading, and the shear stresses generated on bone cells are proportional to the rate of loading. The proportional relation between ...
Okazaki Yoshimitsu - - 2002
The effect of friction on the anodic polarization properties of metallic biomaterials in a physiological saline solution was investigated. The current density during friction becomes higher than during the static condition. The fluctuation range of the current density caused by the destruction and formation of passive film was observed. For ...
Shimizu Michele Eisemann - - 2002
There are no studies in the literature on the effect of exercise in reversing osteoporosis of the upper extremities for people with neurological disorders. The purpose of this study was to explore what conditions respond to a home exercise program for the upper extremities. Sixteen patients, divided randomly into experimental ...
Singh Rabindar - - 2002
Abstract. The effects of cessation of high-impact exercise on bone mass in female Wistar rats was assessed. Fifty 10-week old rats were randomly divided into five groups (n = 10): 4 weeks jump-exercise (4JEX), 4 weeks sedentary control (4S), 8 weeks jump-exercise (8JEX), 4 weeks jump-exercise followed by 4 weeks ...
Robling Alexander G - - 2002
PURPOSE: The beneficial effects of exercise on bone mass and strength can be attributed to the sensitivity of bone cells to mechanical stimuli. However, bone cells lose mechanosensitivity soon after they are stimulated. We investigated whether the osteogenic response to a simulated high-impact exercise program lasting 4 months could be ...
Fukui Yasuyuki - - 2002
STUDY DESIGN: Ten cervical spine trauma subjects were studied during halovest treatment. Each subject wore each of three different vests. OBJECTIVES: To compare the effect of vest design on loads between halo and vest during various activities. SUMMARY OF BACKGROUND DATA: Complications during halovest use may be related to vest ...
Nemet D - - 2002
We assessed the effect of a four weeks exercise training intervention on bone turnover markers in premature infants. Twenty-four very low birth weight premature infants were matched for gestational age, birth weight, gender, as well as for corrected age and weight at initiation of the study. Then the subjects were ...
Mueller Bryon - - 2002
Nuclear medicine procedures are often performed in close-time proximity to bone densitometry studies. The purpose of this study was to determine the effects of various radioisotopes on the accuracy of bone mineral density (BMD) measurements performed using dual-energy x-ray absorptiometry (DEXA) systems. We evaluated two DEXA scanners: the Hologic QDR4500 ...
Rico H - - 2002
We studied the effect of boron supplement on experimental osteopenia caused by strenuous exercise in 93- d-old female Wistar rats. A control group of 15 rats was not manipulated. The exercise group of 30 rats was divided into 2 groups of 15 rats each, one that was fed a diet ...
van de Lest Chris H A - - 2002
An overview is given of the direct and long-term effects of exercise on the biochemical characteristics of cartilage and subchondral bone, and on the metabolic activity of chondrocytes in the juvenile horse. In the experimental setup 43 foals were reared until weaning at 5 months of age under similar conditions, ...
Shimamura Chisato - - 2002
The aim of this study was to determine whether decreased physical activity in exercise-trained young rats would result in a lower rate of bone gain or a reversal of the benefits of exercise. Thirty-five female Wistar rats, 6 weeks of age, were randomized into seven groups: 7 weeks of exercise ...
Umemura Yoshihisa - - 2002
Exercise, by way of mechanical loading, provides a physiological stimulus to which bone tissue adapts by increased bone formation. The mechanical stimulus due to physical activity depends on both the magnitude and the duration of the exercise. Earlier studies have demonstrated that jump training for 4 weeks produces a significant ...
Walker J E C - - 2002
AIMS: To compare several different instruments used to open the chest wall during necropsy and to assess whether any one type reduced the production of sharp rib ends and thus the potential for receiving an injury. METHODS: During the necropsy the pathologist opened the chest wall using two randomly assigned ...
Von Heideken Wågert Petra - - 2002
Several meta-analyses confirm that physical exercise can slow down postmenopausal bone loss, but it is not clear whether physical exercise alone can increase bone mass. Our intent was to evaluate high-impact exercises (including jumping) and combined balance and leg-strength training, with and without raloxifene treatment, in three healthy elderly women, ...
Sugiyama Toshihiro - - 2002
We have suggested that: (i) osteocalcin carboxylation is related to bone material properties (bone quality), and (ii) impairment of bone material properties could be compensated by bone mass increase. The aim of the present prospective study was to investigate whether the effects of skeletal loading on bone mass were associated ...
Huang T H - - 2002
High doses of caffeine will induce calcium loss and influence the normal development of bone, whereas the proper exercise has positive effects on bone metabolism. This study investigated the possible effects of exercise to antagonize the caffeine-induced impairment of bone development in young male Wistar rats. A total of 32 ...
Vincent Kevin R - - 2002
PURPOSE: This investigation examined the effect of 6 months of high- or low-intensity resistance exercise (REX) on bone mineral density (BMD) and biochemical markers of bone turnover in adults aged 60-83 yr. METHODS: Sixty-two men and women (68.4 +/- 6 yr) were stratified for strength and randomly assigned to a ...
Paganelli G - - 2002
Somatostatin receptors type 2 (sst(2)) are expressed in high concentration on numerous neudoendocrine tumors. The successful use of radiolabeled somatostatin analogs in imaging promoted further studies in utilizing them in radiopeptide therapy. The somatostatin analog [(90)Y-DOTA-D-Phe(1)-Try3]octreotide (DOTATOC) (DOTA: 1,4,7,10-tetraazacyclododecane-N,N',N'',N'''-tetraacetic acid) possesses favorable characteristic for its therapeutic use; shows high affinity ...
Bonaiuti D - - 2002
Osteoporosis is a condition resulting in an increased risk of skeletal fractures due to a reduction in the density of bone tissue. Prevention of osteoporotic-related fractures is dependent on the ability to detect individuals with low bone mass, including those women who are asymptomatic. Treatment of osteoporosis involves the use ...
Cleland Joshua J The Physical Therapy Center of Milford, Milford, NH, - - 2002
A systematic review of clinical trials. To determine the effectiveness of therapeutic exercise in the treatment of instability-related lumbar spine pain. Segmental instability of the lumbar spine contributes to the overwhelming incidence of back pain and disability. The extensive range of exercises proposed to treat segmental instability is indicative of ...
MacIntyre N J - - 2001
Cast immobilization of injured forearms is common clinical practice yet little is known about the effect of reduced skeletal loading in the absence of pathology. This study reports the changes in the forearms of nine healthy young adults owing to six weeks in a plaster cast followed by 1 year ...
Sartorio A - - 2001
The aim of the present study was to evaluate the effects of a 16-week progressive high-intensity strength training (HIST) program on peripheral markers of bone turnover (bone Gla protein, BGP; bone alkaline phosphatase, B-AP; N-terminal propeptide of type I procollagen, PINP; C-terminal cross-linked telopeptide of type I collagen, ICTP) in ...
Kohrt W M - - 2001
The osteogenic response to mechanical stress is blunted with aging. It has been postulated that this decline in responsiveness is related to (a) a limited ability to engender the strain necessary to reach the bone modeling threshold, due to decreased muscle mass and strength, and/or (b) a decline in certain ...
Dyson S - - 2001
It was hypothesised that exercise may promote perfusion of the distal part of the limbs and enhance uptake of radiopharmaceutical into bone, but bandaging and lameness would have no effect. Two hundred and two horses undergoing routine nuclear scintigraphic examination for assessment of lameness or poor performance between November 1998 ...
Murray R C - - 2001
It was hypothesised that subchondral bone thickness, hardness and remodelling are influenced by exercise intensity, and by location within a joint. Dorsal carpal osteochondral injury is a major cause of lameness in horses undergoing high intensity training. This project aimed to determine the subchondral bone thickness, formation, resorption and hardness ...
Preisinger E - - 2001
OBJECTIVES: To evaluate the long-term effects of calisthenic home exercises on the incidence of fractures in postmenopausal women. DESIGN: Controlled long-term observational study. METHODS: Postmenopausal women between 45 and 75 years of age who had been randomly assigned to an exercise or control group in the course of a previous ...
Karlsson M K - - 2001
No prospective randomized study with fracture as end point exists in men. Data from retrospective and prospective observational and case control studies suggest that activity in men is associated with reduced fracture risk. This may be correct, but consistently replicated sampling bias may produce the same observation, as these studies ...
Wu J - - 2001
We reported that genistein, a soybean isoflavone, prevents bone loss caused by estrogen deficiency, without undesirable effects on the uterus. In this study, we examined cooperative effects of genistein administration and running exercise on bone mass in ovariectomized (OVX) mice. Female mice aged 7 weeks were either sham-operated or OVX ...
Nichols D L - - 2001
OBJECTIVE: To examine the effects of 15 months of resistance training on bone mineral density (BMD) in female adolescents (aged 14 to 17 years). STUDY DESIGN: Participants were randomly assigned to either a training (n = 46) or control group (n = 21). BMD and body composition were measured by ...
Hart K J - - 2001
Weight-bearing exercise is traditionally recommended for improving bone health in postmenopausal women. Effects of swim exercise were studied as an alternative to weight-bearing exercise in ovariectomized rats. Rats in a swim group (Sw, n = 8) swam for 12 wk, 5 days/wk for 60 min per session. A control group ...
Hertel K L - - 2001
Exercise plays an important role in the prevention and treatment of osteoporosis. This article cites several scientific studies that support exercise as a means of increasing bone mass and strength for the prevention of osteoporosis. The ultimate goal of intervention for individuals with osteoporosis is fracture prevention. A comprehensive approach, ...
Bravenboer N - - 2001
Exercise can prevent bone loss and increase bone density. Growth factors such as insulin-like growth factor-I (IGF-I) and transforming growth factor beta (TGFbeta) are thought to be involved in the local response to mechanical loading, resulting in bone remodelling. We tested the effect of additional weight bearing during exercise on ...
Nakajima D - - 2001
This study was designed to determine whether combined treatments with genistein dosage and moderate resistance exercise would exhibit synergistically preventive effects on bone loss following the onset of menopause. Forty-one 12 wk-old female SD rats were assigned to five groups: 1) Sham operated (Sham); 2) ovariectomized (OVX-Cont); 3) OVX received ...
McLean J A - - 2001
PURPOSE: Women with high scores for dietary restraint have been found to have higher 24-h urinary cortisol excretion and a higher prevalence of subclinical ovulatory disturbances, both of which may be risk factors for bone loss. The purpose of this study was to explore relationships between dietary restraint and bone ...
Warren M P - - 2001
Women have become increasingly physically active in recent decades. While exercise provides substantial health benefits, intensive exercise is also associated with a unique set of risks for the female athlete. Hypothalamic dysfunction associated with strenuous exercise, and the resulting disturbance of GnRH pulsatility, can result in delayed menarche and disruption ...
Wootten, David F
The purpose of this randomized controlled trial was to investigate temporal skeletal responses to short-term high intensity physical activity. Twenty-eight normal active females [age: 20.7 +/- 2.1 yr (mean +/- SD)] were randomized into exercise (EX, n = 15) or control (CN, n = 13) groups. The exercise group trained ...
Weaver C M - - 2001
PURPOSE: The effect of quantified resistance and high impact exercise training on bone mass as modified by age and oral contraceptive (OCont) use in young women was studied. METHODS: Women were categorized by age (18-23 vs 24-31 yr) and OCont use, and were then randomized into either three sessions of ...
Soehartono R H - - 2001
Abomasal disorders of calves with total vagotomy, operated on at 1 week old, were investigated with radiography and protein gene product (PGP) 9.5 immunohistochemistry. Radiographic findings indicated abomasal atony with dilatation in all calves 2 weeks after vagotomy, while 4 weeks after vagotomy abomasal dilatation was detected in 2 calves ...
Ward M P - - 2001
The effectiveness of a synthetic lure system (Lucitrap) to reduce blowfly strike incidence was assessed in a field trial conducted on two properties located in southern Queensland, Australia. Nine hundred and fifty sheep were randomised to treatment (one or more Lucitrap per 100 sheep) and control paddocks. Sheep were physically ...
Cmg Marques,P V Lawford,T ...
INTRODUCTION Exercise is known to cause changes in bone function, density and dimensions [1]. The deleterious or beneficial effects of exercise on physiological responses are also associated with a single strenuous exercise event or with training programs. Strenuous exercise is believed to lead to reduced bone density in subjects over ...
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