Search Results
Results 51 - 100 of 982
1 2 3 4 5 6 7 8 9 10 >
Hagihara Yoshinobu - - 2009
Running exercise is an effective therapy for the prevention of osteoporosis; however, appropriate duration of exercise has not been determined. We therefore investigated the effect of exercise duration on bone mineral density (BMD) and systemic bone metabolism using young growing rats. Fifteen 8-week-old female Wistar rats were divided into three ...
Lovelady Cheryl A - - 2009
: During lactation, women transfer approximately 200 mg of calcium per day to breast milk. For 6 months, this is equivalent to 3%-9% of bone mineral density (BMD) loss at trabecular-rich sites. Bone mass usually returns to prepregnancy levels with cessation of lactation but not in all women. Therefore, the ...
Ma?moun Laurent - - 2009
Physical exercise has frequently been shown to improve bone mass, especially at load-bearing bone sites. It is widely acknowledged that the anabolic effects of exercise on bone tissue are related to the application of mechanical constraints, but part of the osteogenic response may be due to other factors. In particular, ...
de Matos Oslei - - 2009
AIM: To analyse the effect of a specific program of weight training exercise with closed kinetic chain in bone mineral density in postmenopausal women with osteopenia or osteoporosis. METHODS: A total of 59 postmenopausal women with osteoporosis or osteopenia were included in this prospective study. Subjects were divided into two ...
Isaksson Hanna - - 2009
The effects of lifelong physical exercise on the composition, structure and mechanical properties of bone are not well understood. Earlier, we found that voluntary physical exercise improved various properties of bone in maturing male mice up to 6 months of age. In this study, we extended the previous study to ...
Isaksson Hanna - - 2009
This study characterized bone structure, composition, and mechanical properties in growing male mice. The development of the collagen network during maturation was monitored, and the effect of voluntary physical exercise was investigated. We hypothesized that increased bone loading from exercise would increase the amount and improve the properties of the ...
Devlin M J - - 2010
The growing skeleton is particularly responsive to exercise around the time of puberty, suggesting a possible role for estrogen in mechanical adaptation in young women. We assessed femoral neck strength index at age 17 in young women with varying adolescent physical activity levels and E2 levels in the first 3 ...
Hartman A - - 2009
BACKGROUND: Reduced bone mineral density (BMD), altered body composition, impaired motor performance and passive ankle dorsiflexion are side effects of acute lymphoblastic leukemia (ALL) treatment. We performed a randomized study investigating whether an exercise program could prevent these side effects. PROCEDURE: At diagnosis we randomized 51 ALL patients (median age: ...
Brama P A J - - 2009
REASONS FOR PERFORMING STUDY: Subchondral bone provides structural support to overlying articular cartilage and plays an important biomechanical role in osteochondral diseases. Mechanical features of bone correlate strongly with bone mineral density, which is directed by the loading conditions to which the tissue is subjected. OBJECTIVE: To investigate the influence ...
Sakai Akinori - - 2010
The aim of this study was to test the effect of unipedal standing exercise on bone mineral density (BMD) of the hip in postmenopausal women. Japanese postmenopausal women (n = 94) were assigned at random to an exercise or control group (no exercise). The 6-month exercise program consisted of standing ...
Lester Mark E - - 2009
Prescribing exercise based on intensity, frequency, and duration of loading may maximize osteogenic responses in bone, but a model of the osteogenic potential of exercise has not been established in humans. In rodents, an osteogenic index (OI) has been used to predict the osteogenic potential of exercise. The current study ...
Hamilton C J - - 2010
The cumulative risk of fracture for a postmenopausal woman over the age of 50 can reach up to 60%. Exercise has the potential to modify fracture risk in postmenopausal women through its effects on bone mass and geometry; however, these effects are not well characterized. To determine the effects of ...
Englund U - - 2009
This study investigates whether the positive effects on bone mineral density (BMD, g/cm(2)) and neuromuscular function following a combined weight-bearing program are sustained in older women, a longer period after cessation of training. Thirty-four women (18 exercisers and 16 controls) aged 73-88 years, who completed a 12-month randomized-controlled trial, were ...
de Kam D - - 2009
Exercise can reduce falls and fall-related fractures in healthy individuals; however, evidence for individuals with low BMD is limited. The results from this systematic review indicate that exercise interventions for individuals with low BMD to reduce falls and fractures should include balance, muscle strengthening, and weight-bearing exercises. The purpose of ...
Godfrey J K - - 2009
A resistance training program, where the exercise was uninterrupted (UT, i.e. continuous repetitions) was compared against another resistance training program where the exercise was interrupted (IT, i.e. 2 exercise sessions during a training day) for enhancing bone modeling and bone mineral density (BMD) in maturating animals. The total volume of ...
Stewart, Sally Rutherford (Willis)
Physical activity and adequate calcium intake have the potential to increase peak bone mass and reduce the incidence of osteoporosis later in life. This study investigated the effects of 18-months of weight training and calcium supplementation on adolescent bone mineral and bone size and the bone remodeling transient. After screening, ...
Silverman Natalie E NE University of Maryland School of Medicine, Geriatric Research, Education and Clinical Center of the Baltimore Veterans Affairs Medical Center, GRECC (BT/18/GR), 10 North Greene Street, Baltimore, MD 21201-1524, - - 2009
Increased inflammation and weight loss are associated with a reduction in bone mineral density (BMD). Aerobic exercise may minimize the loss of bone and weight loss may contribute to a decrease in cytokines. We tested the hypothesis that aerobic exercise in combination with a weight loss program would decrease circulating ...
Vainionpää A - - 2009
Regular impact exercise in premenopausal women caused positive osteogenic effects associated to low basal serum parathormone (PTH) but had no effects on bone turnover markers PINP or TRACP5b. The low serum basal PTH levels during impact exercise may be a sign of increased incorporation of calcium to bone. This study ...
Singh Jasvinder A - - 2009
OBJECTIVE: To assess the effect of 9 months of strength training on total body and regional bone mineral density (BMD, g/cm(2)) in 58 premenopausal women aged 30-50 years. METHODS: Participants were randomized to either twice weekly supervised strength training for 15 weeks followed by 24 weeks of unsupervised training (treatment ...
Shipov Anna - - 2010
Many studies have described the effects of exercise restriction on the mammalian skeleton. In particular, human and animal models have shown that reduction in weight bearing leads to generalised bone loss and deterioration of its mechanical properties. The aim of this study was to assess the effect of prolonged exercise ...
Guadalupe-Grau Amelia - - 2009
There is a substantial body of evidence indicating that exercise prior to the pubertal growth spurt stimulates bone growth and skeletal muscle hypertrophy to a greater degree than observed during growth in non-physically active children. Bone mass can be increased by some exercise programmes in adults and the elderly, and ...
Merriman Harold - - 2009
BACKGROUND AND PURPOSE: Whole-body vibration (WBV), has become increasingly popular as a form of exercise training. WBV involves the application of a vibratory stimulus to the entire body as opposed to local stimulation of specific muscle groups. The purpose of this review was to assess the evidence concerning the effectiveness ...
Ahola Riikka - - 2009
BACKGROUND: Exercise has been shown to have positive effects on bone density and strength. However, knowledge of the time-course of exercise and bone changes is scarce due to lack of methods to quantify and qualify daily physical activity in long-term. The aim was to evaluate the association between exercise intensity ...
Plochocki Jeffrey H - - 2009
Exercise during postnatal development plays a key role in determining adult bone mass and reducing the risk of fracture and osteoporosis later in life. However, the relationship between mechanically-induced osteogenesis and age is unclear. Elevated levels of estrogen during puberty may inhibit periosteal bone formation. Thus, magnitudes of mechanically-induced osteogenesis ...
Ulrich Silvia - - 2009
Low bone mineral density (BMD) is common in chronic lung diseases and associated with reduced quality of life. Little is known about BMD in pulmonary hypertension (PH). Steroid-naïve patients with PH (n=34; 19 idiopathic, 15 chronic thromboembolic) had BMD measured by DXA at the time of diagnostic right heart catheterization. ...
Beaulieu Marlene - - 2009
The aim of this study was to test the hypothesis that imbalance in patients with a severe deformity of the spine is associated with an increase in the sensory integration disorder. This paper is a case comparison study. Patients were divided into three groups: able-bodied (n = 53), observation (n ...
Tuyl Frank - - 2008
Highest posterior density intervals are common in Bayesian inference, but as noted by Agresti and Min (2005, Biometrics 61, 515-523) they are not invariant under transformations. Agresti and Min suggested central or "tail" intervals as preferable in the context of the relative risk and odds ratio. A modification to this ...
Chuin A - - 2009
SUMMARY: We determined the effect of antioxidants and resistance training on bone mineral density of postmenopausal women. After 6 months, we observed a significant decrease in the lumbar spine BMD of the placebo group while other groups remained stable. Antioxidants may offer protection against bone loss such as resistance training. ...
Nikander R - - 2009
SUMMARY: Compared to high-impact exercises, moderate-magnitude impacts from odd-loading directions have similar ability to thicken vulnerable cortical regions of the femoral neck. Since odd-impact exercises are mechanically less demanding to the body, this type of exercise can provide a reasonable basis for devising feasible, targeted bone training against hip fragility. ...
Martyn-St James M M Leeds Metropolitan University, UK. - - 2009
To assess the effects of differing impact exercise protocols on postmenopausal bone loss at the hip and spine. Systematic review and meta-analysis. Electronic bibliographic databases, key journals and reference lists of reviews and articles. Two independent reviewers assessed controlled trials evaluating effects of impact exercise on lumbar spine, femoral neck ...
Samuels Joshua X - - 2008
Living rodents show great diversity in their locomotor habits, including semiaquatic, arboreal, fossorial, ricochetal, and gliding species from multiple families. To assess the association between limb morphology and locomotor habits, the appendicular skeletons of 65 rodent genera from 16 families were measured. Ecomorphological analyses of various locomotor types revealed consistent ...
Rueff-Barroso Carlos Romualdo - - 2008
BACKGROUND: To investigate the effects of low-intensity exercise on bone healing during a short time. MATERIAL/METHODS: We made a surgical 1-mm perforation in the upper third medial cortical of the right tibia of 45 male Wistar rats (3 months old; mean weight, 282+/-34 g). Animals were randomly assigned to a ...
Tolomio S - - 2008
BACKGROUND AND AIMS: It is known that people affected by osteopenia/osteoporosis can benefit from an adequate amount of physical activity, counteracting the progressive loss of bone and muscle mass caused by aging. Moreover, there is increasing evidence that exercise has positive effects on bone structure. The aim of our study ...
Wang Wen-Hung - - 2008
OBJECTIVE: To examine the threshold of virtual endoscopy in the confirmation of superior semicircular canal dehiscence (SSCD). STUDY DESIGN: Retrospective case series. SUBJECTS: Three definite SSCD subjects, two possible SSCD subjects, and five control subjects. METHODS: High-resolution temporal bone computed tomography and virtual endoscopy were performed in all subjects. Main ...
Kukuljan S - - 2009
SUMMARY: We examined the independent and combined effects of a multi-component exercise program and calcium-vitamin-D(3)-fortified milk on bone mineral density (BMD) in older men. Exercise resulted in a 1.8% net gain in femoral neck BMD, but additional calcium-vitamin D(3) did not enhance the response in this group of older well-nourished ...
Adami Silvano - - 2008
Strenuous physical activity in young individuals has an important effect on both bone mass and bone turnover but the effect of moderate physical activity in adults remains uncertain. In a large cohort (N = 530) of healthy premenopausal women, bone formation markers (osteocalcin and N-terminal propeptide of type 1 procollagen ...
Jeffery, Jay Melvin, 1978-
Disuse of weight bearing bones has been shown to cause bone loss. This poses a health concern for people exposed to microgravity, such as astronauts. Animal studies are used to study factors related to bone loss and countermeasures to prevent bone loss. This study used a hindlimb unloaded (HU) rat ...
Ooi F K - - 2009
SUMMARY: This study determines the minimum level of exercise required to maintain 8 weeks of jumping exercise-induced bone gains in rats. It was found that the minimum level of exercise required for maintaining the different exercise-induced bone gains varied between 11% and 18% of the initial exercise intensity. INTRODUCTION: This ...
Paolantonio Michele - - 2008
BACKGROUND: This randomized controlled clinical trial was designed to compare the clinical outcomes of guided tissue regeneration with calcium sulfate graft and membrane (CS) versus guided tissue regeneration with collagen membrane (CM) or open flap debridement (OFD) only in terms of clinical attachment gain in periodontal intrabony defects. METHODS: Fifty-one ...
Schöffl I - - 2008
The objective of this study was an integrated cross-sectional investigation for answering the question whether differences in bone mineral density in elderly postmenopausal women are associated with differences in habitual physical activity and unspecific exercise levels. Two hundred and ninety nine elderly women (69-/+3 years), without diseases or medication affecting ...
West Sarah L - - 2009
BACKGROUND: The benefits of exercise are widely recognized, however physically active women can develop exercise associated menstrual cycle disturbances such as amenorrhea (i.e., estrogen deficiency) secondary to a chronic energy deficiency. OBJECTIVE: To assess the effects of exercise status and estrogen deficiency on osteoprotegerin (OPG) and its relationship to bone ...
Khan M - - 2008
Wear of metal-on-metal bearings causes elevated levels of cobalt and chromium in blood and body fluids. Metal-on-metal bearings have two distinct wear phases. In the early phase, the wear rate is high. Later, it decreases and the bearing enters a steady-state phase. It is expected that as the wear rates ...
Rotstein A - - 2008
AIM: The aim of the present study was to examine the effect of a seven months program of water exercise, on bone mineral density (BMD) in postmenopausal women. METHODS: Thirty-five postmenopausal women trained for seven months for three one-hour sessions per week. DEXA test findings for vertebrae L2-L4 showed that ...
Roy Angan - - 2009
A study was conducted on twenty indigenous goat kids allocated into two different groups. All animals were offered ad libitum rice straw and berseem hay (40:60). Group I (T(1)) was fed concentrate mixture (100 g/d). Group II (T(2)) was supplemented with urea molasses mineral block (200 g/d). The experiment lasted ...
Kohn David H DH Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, Mich. 48109-1078, USA. - - 2009
The mechanical properties of bone are dictated by its amount, distribution and 'quality'. The composition of the mineral and matrix phases is integral to defining 'bone quality'. Exercise can potentially increase resistance to fracture, yet the effects of exercise on skeletal fragility, and how alterations in fragility are modulated by ...
Karinkanta S - - 2009
SUMMARY: This study showed that about a half of the exercise-induced gain in dynamic balance and bone strength was maintained one year after cessation of the supervised high-intensity training of home-dwelling elderly women. However, to maintain exercise-induced gains in lower limb muscle force and physical functioning, continued training seems necessary. ...
Kohrt, Wendy M.
The original objective was to determine whether a 1-year intensive resistance exercise training (RT) program is more effective than a moderate-intensity walking program in ameliorating the effects on body composition of androgen deprivation therapy (ADT) in men with prostate cancer. It was postulated that: 1) RT will attenuate the declines ...
Trindade Ibsen Suet Onio - - 2008
OBJECTIVE: Determine minimum inflation time necessary for total stent expansion and apposition. BACKGROUND: Complete stent expansion is needed to adequately support the increase in artery lumen and to accommodate neointimal growth. METHODS: Experimental in vitro study. Twenty-five silicon carbide-coated stainless steel stents (3.5 x 20 mm) were released (14 atm) ...
Alwis Gayani - - 2008
AIM: The aim of this study was to evaluate if a general school-based exercise intervention programme in pre-pubertal boys would render site-specific benefits in bone mineral accrual and gain in femoral neck structure. METHODS: Eighty boys aged 7-9 years were included in a curriculum-based exercise intervention programme comprising 40 min ...
Mustard John F - - 2008
Phyllosilicates, a class of hydrous mineral first definitively identified on Mars by the OMEGA (Observatoire pour la Mineralogie, L'Eau, les Glaces et l'Activitié) instrument, preserve a record of the interaction of water with rocks on Mars. Global mapping showed that phyllosilicates are widespread but are apparently restricted to ancient terrains ...
1 2 3 4 5 6 7 8 9 10 >