302 Clinical Trials for Various Conditions
This study is designed to answer a key question in the field of implementation science. Specifically, it seeks to determine if a proposed model for the implementation and scale-up of healthcare innovations (the AIDED model) is effective and useful. To fully evaluate the potential of this model, the investigators will conduct a multi-year study comprising 3 phases. This proposal represents the first of these phases.
Cardiovascular disease (CVD) is responsible for 1 out of every 5 deaths, is the number one killer of Americans, killing about 700K US adults per year (1). Our proposed research is a clinical trial that will determine the effects of feeding California freeze-dried grapes (which are directly comparable to fresh table grapes), on cardiovascular and chronic disease risk factors, namely, blood glucose and lipids (total cholesterol, LDL, HDL, and triacylglycerides), electrolyte and blood indicators (such as sodium, calcium, potassium, etc.), c-reactive protein (hs-CRP) and tumor necrosis factor alpha (TNF-alpha) (measures of inflammation and CVD risk), body composition (body weight, body fat percentage, lean tissue weight, body water amount and Kcal requirement to maintain body composition status), and blood pressure (BP) in 30 adults. The investigators will test satiety and hunger to see if grape antioxidants decrease both, implying that there will be a decrease in caloric intake and result in body composition improvements.
There are close to 700,000 survivors of adolescent and young adult (AYA) cancer (aged 15 to 39 at diagnosis) in the US. Survivorship for AYAs is often complicated by long-term and late-effects. Cardiovascular disease (CVD), in particular, is a leading cause of death for cancer survivors and is a growing public health concern for survivors diagnosed as AYAs. Risk of CVD may be associated with treatment exposures and may be potentiated by weight gain and poor health behaviors. Healthy eating and physical activity are key behaviors for weight loss and maintenance and may be protective against CVD risk, yet few AYA cancer survivors adhere to guidelines for healthy eating or activity. AYA survivors' abilities to engage in health behaviors (i.e., healthy eating, physical activity) necessary to manage weight may also be challenged by persistent cancer-related symptoms (i.e., pain, fatigue, psychological distress). Thus, weight gain is common. Using input from AYA cancer survivors, the investigators have adapted a behavioral weight and symptom management protocol for AYA cancer survivors with obesity to create an intervention that is responsive to AYAs' unique needs. A pilot randomized controlled trial will be conducted to examine intervention feasibility and acceptability and to examine patterns of change in outcomes including weight, body mass index, symptoms (e.g., pain, fatigue, distress) as well as other CVD risk factors, including blood pressure, cholesterol (total, HDL, LDL), HbA1c, and atherosclerotic cardiovascular disease (ASCVD) risk score.
The purpose of this study is to determine the ability of acute exercise to regulate fat metabolism in muscle of overweight and obese people compared to lean people.
The objectives of the study are to conduct a randomized controlled trial to test the efficacy of the Smartphone intervention on % weight loss and maintaining % weight loss at 6 and 12 months in a sample (N=256) of Black community college students who are overweight or obese, ages 18-25 years. Investigators will also examine mediating variables of the intervention on weight at 6 and 12 months, including adherence to self-monitoring, discrimination, and dietary and physical activity self-efficacy. In addition, investigators will explore potential moderators of weight loss at 6 months and 12 months, including depressive symptoms, ideal body image, and motivation.
Dietary interventions designed to promote health by increasing the consumption of particular health-promoting foods (e.g., strawberries) generally target blood pressure and LDL-C; however, CVD risk reduction may also be achieved via changes in emerging endpoints such as the gut microbiome. Previous research suggests that strawberries have the potential to reduce LDL-C, but it remains unclear whether there is a dose-response relationship. Moreover, few studies have evaluated effects on vascular health or characterized changes in the gut microbiome following daily strawberry consumption. Additionally, previous studies have largely been conducted among Caucasian populations. Given the demographics of the US, it is important to evaluate effects in study populations that include ethnicities that may have higher risk of type 2 diabetes and/or other CVD risk factors, such as Hispanics. This study aims to examine the effects of 4 weeks of supplementation with two doses of freeze dried strawberry powder (low dose: 13 g/d and high dose: 40 g/d) on: 1) LDL-C and blood pressure; 2) gut microbiome profile; and 3) other CVD and type 2 diabetes risk factors, including glucose, insulin, and inflammatory markers. Overweight (BMI 25-36 kg/m2) but otherwise healthy adults with moderately elevated LDL-C (\>3.0 mmol/L) and/or prehypertension (120-159/80-99 mm Hg) will be enrolled. This will optimize the potential for observing significant benefits on these outcomes. 50 eligible participants will be recruited with the expectation that at least 40 will complete the study. The placebo-controlled, crossover study design will allow for a direct comparison of dose-response within the same participant. The investigators anticipate that the bioactive components of strawberries will reduce LDL-C and blood pressure, and modify the gut microbiome, with greater changes on the high dose. There is preliminary evidence that polyphenol-rich foods can modify gut microbiota profiles, but this would be the first study to characterize the effects of daily strawberry consumption. The investigators are uniquely placed at the University of Arizona to enroll a larger percentage of Hispanic participants, who are often under-represented in clinical nutritional research. Results from the proposed study will improve understanding of how strawberries might promote health, and could provide further support for the incorporation of whole freeze dried fruit in dietary guidelines.
The purpose of this study is to conduct a preliminary test of the effectiveness of various educational interventions to promote adoption of a whole-food, plant-strong diet and reduce specific cardiovascular risk factors in Veterans, and subsequently perform a preliminary pilot study on whether this dietary approach will change plaque inflammation and endothelial function.
This study evaluates the effects of a prescribed 4-week raw, plant-based dietary intervention in the treatment of excess body weight, hypercholesterolemia, and hypertension in the clinical setting.
This study is a randomized 3-period crossover, controlled feeding study designed to evaluate the effects of the most commonly consumed spices in the U.S. on CVD risk factors, inflammation \& immune function, and diet satisfaction in participants at risk for CVD.
The aim of this study is to determine the relationship between the percentage of calories from dairy intake and long-term glycemic control and weight maintenance in patients with type 2 diabetes who participate in an intensive lifestyle intervention program. The investigators hypothesize that overweight and obese patients with type 2 diabetes who consume higher percentage of calories from dairy products during intensive lifestyle intervention programs have better glycemic control and maintenance of weight loss as compared to those who consume lower percentage of calories from dairy products.
The purpose of this study is to evaluate the effects of cranberry juice on central and peripheral blood pressure, indices of arterial stiffness, lipid and lipoprotein concentrations and size characteristics, and HDL function. The investigators hypothesize that the bioactive compounds in cranberry juice may elicit beneficial effects on blood pressure and arterial health, as well as LDL-C and HDL function.
The purpose of this study is to determine the health benefits of cranberry extract in people who are at risk for diabetes and heart problems.
This project will address the important area of childhood obesity and the risk of cardiovascular disease associated with obesity. This is a serious health concern since children who are overweight or obese are prone to other medical conditions including high blood pressure, abnormal lipid profiles,and type 2 diabetes. Although exercise and nutrition programs are recommended, evidence for the efficacy of these programs in improving cardiovascular health is lacking. Specific Aims: a) improve cardiovascular risk factors, b) increase physical fitness levels, c) improve lean body mass, d) enhance QOL of the child e) influence adherence rates to exercise and a healthy lifestyle change both during and beyond the conclusion of the program. Hypothesis 1a: Compared to baseline and matched controls, children randomized to a 10 week multidisciplinary fitness and nutrition program will show significant improved levels of cardiovascular risk factors. Specific Aim 2: To determine if a multidisciplinary fitness and nutrition program, when compared with a matched, WLC group will show a change in whole body assessment including a decrease in fat mass, an increase in percent lean body mass, and a decrease in percent body fat, as measured utilizing dual-energy X-ray absorptiometry Hypothesis 2a: Compared to baseline and matched controls, children randomized to a 10 week multidisciplinary fitness and nutrition program will show improved whole body assessments including. Specific Aim 3:To determine if a multidisciplinary fitness and nutrition program, when compared with a WLC group will show improved levels of fitness. Hypothesis 3a: Compared to baseline and matched controls, children randomized to a 10 week multidisciplinary fitness and nutrition program will show significant improvements in fitness including.
This is a multicenter, randomized, double-blind, placebo-controlled, parallel-group study in overweight and obese subjects with cardiovascular (CV) disease and/or multiple CV risk factors.
Berry anthocyanins have been shown to improve lipid profile in subjects with dyslipidemia while no such studies with whole strawberries have been reported in the US population. The investigators propose to examine the effects of low and high doses of freeze-dried strawberries on serum glucose, insulin, and lipid profile, biomarkers of oxidative stress and inflammation, in a 12-week randomized controlled trial. Subjects with abdominal adiposity and dyslipidemia (n=15/group) will be recruited at OUHSC and OSU, and randomly assigned to the low (25g/day) or high (50g/day) strawberry dose, or matched control (fiber and calories) group. The strawberry group will consume freeze-dried strawberry beverage (2 cups/day) and the controls will consume 2 cups beverage (fiber +calories) daily for 12 weeks. Blood draws, anthropometrics, blood pressure, and dietary data will be collected at screen, 6 and 12 weeks of the study to determine chronic and acute effects of strawberry intervention. Serum or plasma samples will be analyzed for fasting glucose, insulin, lipid profile including total cholesterol, LDL-, and HDL-cholesterol, triglycerides, lipid particle size, and levels of oxidative stress (malondialdehyde, oxidized LDL, myeloperoxidase), inflammation (high sensitivity C-reactive protein, adiponectin, interleukins) and adhesion molecules. Repeated measures ANOVA will be performed using a 5% significance level. We anticipate a dose response effect in decrease in lipids, oxidative stress or inflammation following strawberry intervention versus controls.
The purpose of this Phase 3b study is to assess the effects of combination therapy with naltrexone SR/bupropion SR (NB) used in conjunction with a comprehensive lifestyle intervention (CLI) and in a manner consistent with its intended use after marketing approval, on body weight and cardiovascular risk factors compared to the effects of Usual Care in subjects who are overweight with dyslipidemia and/or controlled hypertension or obese. Subjects in the NB and CLI group are required to undergo an evaluation to continue treatment at Week 16. Subjects are to be discontinued from full participation if they do not lose at least 5% of their body weight relative to baseline and/or are experiencing sustained increases in blood pressure (systolic or diastolic) of ≥10 mmHg above baseline. At Week 26, subjects originally assigned to Usual Care switch to treatment with NB and CLI, and subjects assigned to NB and CLI continue treatment for the duration of the study (78-weeks treatment period).
The primary aim of this study is to compare, in a group of at-risk individuals, the role of three dietary patterns on indices of Cardiovascular Disease (CVD) risk: a) the recommended Korean pattern; b) the typical American diet, based on national dietary intake surveys; and c) the 2010 DGA diet pattern. A secondary aim will be to assess the effects of each diet on intestinal microbiota and on inflammatory biomarkers.
The purpose of this study is to determine the effects of NB relative to placebo on major adverse cardiovascular events (MACE) such as cardiovascular death, non-fatal myocardial infarction, and non-fatal stroke in overweight and obese subjects who are at a higher risk of having these events because they have diabetes and/or other cardiovascular risk factors.
The purpose of the present pilot study is to determine the effect of vitamin D supplementation (4000 IU or 6000 IU once daily for 6 months) on reducing heart disease risk and in improving blood glucose control in type 2 Diabetes subjects . The investigators are working with Hispanics and African Americans living in Miami, Florida.
The purpose of this study is to examine the effects of a blueberry powder on insulin sensitivity, blood pressure, and vascular reactivity in subjects with metabolic syndrome.
This trial compared the effects of raisin intake on cardiovascular risk factors compared to common, commercially available, alternative snacks. These cardiovascular risk factors include glucose, blood pressure, lipid levels, body weight, and waist circumference.
A study to examine the effectiveness of a multilevel Community Health Workers intervention as an adjunct to routine primary care in reducing CVD risk factors among diabetic Latinos in Miami.
The purpose of this research is to build the evidence base for approval of FDA health claims related to almonds and cardiovascular disease. A randomized, 2-period, crossover controlled feeding study was designed to compare the effects of two blood cholesterol lowering diets that meet the American Heart Association recommendations. The nutrient profiles of the control diet (no almonds/day) and almond diet (1.5 oz. of almonds/day) are matched for protein, saturated fat, and cholesterol. The study population consists of two cohorts of 25 men and women with moderately elevated LDL-C. The investigators hypothesize that a cholesterol-lowering diet designed with almonds confers greater cardioprotective effects than a cholesterol-lowering diet without almonds on the basis of the LDL-C lowering response, effect on LDL particle size, abdominal adiposity and vascular health.
This study explores how aromatase inhibitor therapy affects risk factors for heart disease in postmenopausal women with breast cancer.
People infected with HIV are now living longer lives because of the use of highly active antiretroviral therapy (HAART). However, HAART medications have been shown to increase the risk of cardiovascular disease and metabolic dysfunction in adults. More research is needed on the effect of HAART in children. The purpose of this study is to assess cardiovascular risk factors in children infected with HIV who receive HAART medications and to determine the effectiveness of an exercise program on cardiovascular outcomes in these children.
The prevalence of obesity has reached epidemic proportions nationally as well as internationally. Currently, 16 % of American adolescents are obese. In adults, obesity is a risk factor for vitamin D insufficiency and up to 80% of obese adults have been noted to vitamin D insufficient. In adults, low vitamin D status appears to be associated with the development of type 2 diabetes and metabolic syndrome. There is little information on the prevalence of vitamin D insufficiency and its implications in obese adolescents. Additionally, it is unknown whether treatment of vitamin D insufficiency in adolescents might result in improvement in insulin resistance, lipids and cardiovascular risk markers. We hypothesize that vitamin D insufficiency correlates positively with insulin resistance and cardiovascular risk in obese adolescents and that vitamin D3 supplementation improves insulin resistance and cardiovascular risk factors in this population. The purpose of the study is to determine the impact of vitamin D3 supplementation on various parameters of insulin secretion, insulin action, lipids and C-reactive protein in obese adolescents.
The aim of the Antioxidant Study was to compare the efficacy of foods naturally rich in antioxidants with that of antioxidants in a pill form on markers of inflammation and plasma cholesterol in healthy adults at risk of cardiovascular disease.
The purpose of this study is to see if giving growth hormone or insulin-like growth factor-1 (IGF-1) to subjects with growth hormone deficiency effects cardiovascular risk factors differently.
The purpose of this proposed randomized, controlled trial is to compare the effects of high monounsaturated fat diets and high carbohydrate diets on body weight, body composition, glycemic control, plasma lipids, and other cardiovascular risk factors over a period of one year. At present, no such studies of free-living subjects have been performed. The specific aims of the proposed project are to test the hypotheses that (1) a high monounsaturated fat diet will produce greater weight loss/body fat loss and more successful weight maintenance than a high carbohydrate diet and (2) a high monounsaturated fat diet will result in an improved lipid profile and better glycemic control than a high carbohydrate diet.
The purpose of this pilot study is to examine the effect of diet and/or exercise-induced weight loss on nontraditional cardiovascular risk factors such as c-reactive protein, insulin levels and sex steroids in obese postmenopausal women.