Search results for "mineral density"
showing 10 items of 44 documents
Effects of exercise frequency and training volume on bone changes following a multi-component exercise intervention in middle aged and older men: Sec…
2021
Progressive resistance training (PRT) combined with weight-bearing impact exercise are recommended to optimize bone health, but the optimal frequency and dose of training remains uncertain. This study, which is a secondary analysis of an 18-month intervention in men aged 50–79 years, examined the association between exercise frequency and the volume of training with changes in DXA and QCT-derived femoral neck (FN) and lumbar spine (LS) bone outcomes, respectively. Men were allocated to either thrice-weekly PRT plus impact exercise training (n = 87) or a non-exercising (n = 85) group. Average weekly exercise frequency (ExFreq) and training volume per session [PRT volume (weight lifted, kg), …
Effects of elastic-based exercise interventions on oxidative stress, bone health, body composition, neuromuscular strength and physical function in o…
2021
Antecedentes El envejecimiento de la población mundial es reconocido por la Organización Mundial de la Salud (OMS) como un problema principal debido a las discapacidades y comorbilidades relacionadas con este proceso, siendo las mujeres el género más afectado. Debido al deterioro y las consecuencias asociadas al envejecimiento, la actividad física y el ejercicio han demostrado ser estrategias eficaces para reducir el impacto del envejecimiento. Sin embargo, todavía se desconoce qué tipo de programa de entrenamiento podría ser el más eficaz para revertir los cambios deletéreos relacionados con la edad en mujeres mayores. En este sentido, el tipo de intensidad del entrenamiento y la modalidad…
Research update for articles published in EJCI in 2016
2018
The association of an excessive blood pressure increase with exercise (i.e., an increase in systolic blood pressure with exercise ≥95th percentile) with lower risk of subsequent events in patients with known or suspected coronary artery disease has been consistently verified even in those with baseline hypertension. Nonetheless, this negative association, also confirmed in another study on a Japanese population, might depend on peak VO2, such that the prognostic value of blood pressure response might be limited in patients with preserved exercise capacity. In addition, a hypertensive response with exercise (defined as a systolic blood pressure ≥220 mmHg during the test) has also been associ…
25-hydroxy vitamin D levels in healthy premenopausal women: Association with bone turnover markers and bone mineral density
2008
Abstract Background Vitamin D deficiency is very common in elderly people while there are very few reports on its incidence, determinants and metabolic consequences in young subjects. Results In 608 young healthy premenopausal women participating in the BONTURNO study, levels of 25-hydroxyvitamin D [25(OH)D] below 20 ng/ml were found in almost a third of the women. Its levels were inversely ( P 2 ) and directly with sunlight exposure during the summer time, and latitude: i.e. the higher the latitude over Italy, the higher the 25(OH)D level. In women on contraceptive pill the mean 25(OH)D level was significantly increased even when the data were adjusted for age, BMI and sun exposure. 25(OH)…
Vitamin K antagonists' use and fracture risk: results from a systematic review and meta‐analysis
2015
Background: Although vitamin K antagonists (VKAs) lower serum values of bone deposition markers, the link with osteoporosis and fractures remains controversial. Objectives: To assess whether the use of VKAs is associated with an increased prevalence and/or incidence of osteoporosis, fractures, or lower bone mineral density (BMD) values. Methods: We conducted a systematic PubMed and EMBASE literature search until August 31, 2014, and a meta-analysis of cross-sectional and longitudinal studies investigating fractures and BMD, comparing patients treated with VKAs and healthy controls (HCs) or with patients with medical illness (medical controls, MCs). Standardized mean differences ± 95% and co…
Risk of low bone mineral density and low body mass index in patients with non-celiac wheat-sensitivity: a prospective observation study.
2014
Background Non-celiac gluten sensitivity (NCGS) or ‘wheat sensitivity’ (NCWS) is included in the spectrum of gluten-related disorders. No data are available on the prevalence of low bone mass density (BMD) in NCWS. Our study aims to evaluate the prevalence of low BMD in NCWS patients and search for correlations with other clinical characteristics. Methods This prospective observation study included 75 NCWS patients (63 women; median age 36 years) with irritable bowel syndrome (IBS)-like symptoms, 65 IBS and 50 celiac controls. Patients were recruited at two Internal Medicine Departments. Elimination diet and double-blind placebo controlled (DBPC) wheat challenge proved the NCWS diagnosis. A…
Nephrolithiasis, bone mineral density, osteoporosis, and fractures: a systematic review and comparative meta-analysis
2016
Summary: Our meta-analysis demonstrates that people with nephrolithiasis have decreased bone mineral density, an increased odds of osteoporosis, and potentially an elevated risk of fractures. Introduction: People with nephrolithiasis might be at risk of reduced bone mineral density (BMD) and fractures, but the data is equivocal. We conducted a meta-analysis to investigate if patients with nephrolithiasis have worse bone health outcomes (BMD), osteoporosis, and fractures versus healthy controls (HCs). Methods: Two investigators searched major databases for articles reporting BMD (expressed as g/cm2 or a T- or Z-score), osteoporosis or fractures in a sample of people with nephrolithiasis, and…
Osteoporosi e diabete mellito. [Osteoporosis and diabetes]
2004
Diabetes mellitus and osteoporosis are chronic diseases with an elevated and growing incidence in the elderly. Recent epidemiological studies have demonstrated an elevated risk of hip, humerus and foot fractures in elder diabetic subjects. While type 1 diabetes is generally associated with a mild reduction in bone mineral density (BMD), type 2 diabetes, more prevalent in old subjects, is frequently linked to a normal or high BMD. Studies on experimental models of diabetes have suggested an altered bone structure that may help to explain the elevated risk of fractures observed in these animals and may as well help to explain the paradox of an incremented risk of fractures in type 2 diabetic …
Effects of physical activity on the lean and fat mass of the legs and on the femoral BMD in young adults
2010
Aim. To evaluate the effects of physical activity on the lean (LLM) and fat (FLM) mass of both legs and on the left femur neck bone mineral density (FemBMD) in young adults. Methods. Subjects were 48 healthy male, mean age 25 (range 20-32). Subjects were assigned to one of three groups according to the physical activity practiced from age 10 onwards: 17 sedentary subjects (A), 15 active subjects (B) and 16 athletes (C). LLM and FLM (g) were evaluated by Dual Energy X-ray Absorptiometry (DEXA), as well as FemBMD (g/cm2). The data is shown as mean values ± standard deviation. For the statistical analysis of the data, linear regression analysis and Student's t test for unpaired data were used.…
Do More Highly Organized Collagen Fibrils Increase Bone Mechanical Strength in Loss of Mineral Density After One-Year Running Training?
1999
The aim of this study was to evaluate the effects of long-term running training on the structural properties of bone. Ten beagle dogs ran according to a strenuous progressive program (up to 40 km/day) for 1 year. At the end of the training program, there was a significant reduction in bone mineral density (up to 9.7%) in the vertebrae of the runner dogs as compared with 10 sedentary control dogs. Polarized light microscopy of the vertebral trabecular bone, however, displayed proportionally higher retardation values of the collagen network of the runner dogs than of the sedentary dogs, suggesting a reorganization in a more parallel manner in the collagen fibrils. The concentration and cross-…