300,000+ clinical trials. Find the right one.

112 active trials for Osteoporosis

A Physical Activity Program for Female Nursing Home Residents at Risk of Osteoporosis

Worldwide, osteoporosis causes more than 8.9 million fractures per annum. Osteoporosis used to be a significant public health concern that most commonly affected Caucasian women in Northern Europe and the United States. Recently, it has become a major public health problem in Asia, most notably among Chinese women. We intend to conduct a cluster randomized controlled trial (RCT) to examine if a physical activity and education intervention, compared with an education-only intervention (waiting list for physical activity), can result in improved physical activity, reduced falls, and maintaining bone mass, among female nursing home residents in China. The aim of the current pilot and feasibility trial is to test the feasibility and acceptability of conducting these interventions. A pilot and feasibility cluster RCT will be conducted for females aged 60 to 75 years living in nursing homes in Chengdu, the capital of Sichuan Province, Western China. The unit of cluster randomization is the nursing home. A total of four nursing homes (two state-owned and two private-owned) will be involved in the pilot and feasibility trial. They will be randomly selected and afterwards randomly assigned to either the intervention group (2 nursing homes) or control group (2 nursing homes). We seek to recruit 20 women from each nursing home. The intervention group participants will exercise with the research staff or under supervision of the trained nursing home staff, and will receive face-to-face workshops, booklet, newsletters, phone calls, and short message service (SMS) reminders. Participants in the control group will only receive educational materials (i.e. face-to-face workshops and booklet) and will be wait listed to receive no other interventions of this study until after the post-intervention. All participants will be referred to doctors for advice and standard care as usual. The primary outcome is the change of habitual physical activity from baseline to 12 months, which will be measured using the International Physical Activity Questionnaire - Short Form (IPAQ-SF). Secondary outcomes include incidental falls and change in bone mineral density (BMD) from baseline to 12 months. The study results will serve to provide an estimate of the effect size, intraclass correlation coefficient (ICC) and rates of eligibility, recruitment and attrition, which may enable a more accurate sample size calculation for a definitive RCT.

Start: February 2020
Osteoporosis, Trabecular Bone Score and Fracture Risk Assessment in Male Patients After Radical Cystectomy

Radical cystectomy is associated with a greater risk of fracture due to long-term metabolic consequences of intestinal urinary diversions. One of the mechanisms theoretically involved with bone loss after radical cystectomy is metabolic acidosis that inhibits osteoblast activity, stimulates osteoclast bone resorption and urinary calcium loss. Other factors as advanced age, diabetes or chronic renal failure may increase the effect of metabolic acidosis. Moreover, osteoporosis in men remains under-diagnosed and under-appreciated. Although metabolic and bone changes after radical cystectomy are well known, bone mineral density (BMD) or fracture risk assessment are not recommended in different international guidelines during follow-up. The objective of this study is to evaluate the fracture risk of male patients undergoing radical cystectomy after more than one year of follow-up. Fracture risk assessment will be performed by BMD to analyse the prevalence of osteoporosis, vertebral fractures and measurement of Trabecular Bone Score (TBS) in combination with the Fracture Risk Assessment Tool (FRAX). These results will be correlated with blood markers with the objective to determine independent risk factors for osteoporosis or bone fracture in this population. To the best of the investigator's knowledge this will be the first study assessing the fracture risk after radical cystectomy performance evaluating BMD and the probability of fracture at 10 years using the FRAX algorithm.

Start: May 2018
Guangzhou Nutrition and Health Study (GNHS)

Purpose: The Guangzhou Nutrition and Health Study (GNHS) aims to assess the determinants of risk of osteoporosis and cardio-metabolic diseases and changes in their relevant indices in nutritional aspects, as well as other environmental and genetic factors. Study design: GNHS is a community-based prospective cohort study. Participants: About 4048 apparently healthy residents, living in Guangzhou city (South China) for >5 years, aged 40-80 years, recruited between 2008 and 2013. Visits and Data Collection: Participants were/will be visited every three years by invited to the School of Public Health, Sun Yat-sen University. At each visit, face-to-face interviews, specimen collection, anthropometric measurements, DXA scanning, ultrasonography evaluation were/will be conducted. Up to May 2017, 3143 and 2312 subjects completed the 2nd and 3rd visits. Key variables: Questionnaire interviews: Structured questionnaires were/will be used to collect the participants' socio-demographic characteristics, lifestyle factors, menstruation and reproductive history (women only), sleep quality, family history, psychological health, social support and participation, cognitive function, habitual dietary intake, use of supplements and history of chronic diseases. Physical examinations: Anthropometric measurements, blood pressure tests, handgrip strength, and usual gait speed. DXA scanning: A dual-energy x-ray absorptiometry (DXA) was/will be used to determine bone density and bone mineral content, bone geometry information, fat mass and muscle mass. Ultrasonography evaluations: Ultrasonography evaluation was/will be performed to determine carotid artery intima-media thickness and plaque, and fatty liver. Specimen collections: Overnight fasting blood sample and early morning first-void urine sample and faces samples were/will be collected, separated and stored at -80°C till tests. Laboratory tests: Blood tests: Metabolic syndrome-related indices; inflammatory markers; sexual hormones and SHBG; genetic markers; nutritional indices (e.g., carotenoids; fatty acids; minerals, folate, betaine, choline, and vitamin D, etc.) Urinary tests: Flavonoids and flavones; minerals; creatinine and renal function related markers Fecal test: Gut microbiota and related metabolites. Morbidity and mortality: Relevant data were/will be also retrieved via local multiple health information systems.

Start: July 2008