Healthy Eating for Reproductive Health: Greenville
试验速览
- 阶段
- 不适用
- 状态
- 撤回
- 试验地点
- 2
- 主要终点
- Changes in body weight
研究概览
简要总结
This study will be a 6-month intervention that is examining how different dietary approached may be useful for women with Polycystic Ovarian Syndrome (PCOS) who are attempting pregnancy, particularly by measuring changes in weight. Participants will be randomly assigned to following one of two dietary approaches for weight loss: 1) a low-calorie approach to weight loss (reducing caloric intake by approximately 500 calories per day) or 2) a low-fat, low-glycemic index vegan diet. A vegan diet is one that does not contain any animal products (no meat, fish, poultry, eggs, or dairy) but emphasizes plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans. In addition, this diet will be low-glycemic index, which means the consumer will be asked to favor foods that don't cause a quick rise in blood sugar (for example, favoring oatmeal over cornflakes for breakfast). Participants will receive counseling and supporting materials on the dietary approach the participants are assigned to follow. Both diets are safe and have shown to be effective ways to assist with achieving a healthy weight. The investigators hypothesize that both groups will see improvements in weight and fertility with possible greater improvements seen among participants in the vegan group.
详细描述
This study involves two groups. You will be randomly assigned to one of these groups (i.e. you do not have a choice for group assignment) which means your group will be assigned to you by chance. Both groups will receive information on a dietary approach aimed at losing weight.
One group will receive instruction on a low-calorie approach to weight loss (reducing caloric intake by approximately 500 calories per day). The other group will be instructed to follow a low-fat, low-glycemic index vegan diet. A vegan diet is one that does not contain any animal products (no meat, fish, poultry, eggs, or dairy) but emphasizes plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans. In addition, this will be a low-glycemic index diet, which means you will be asked to favor foods that don't cause a quick rise in blood sugar (for example, choosing oatmeal over cornflakes for breakfast).
Below are the steps in the study:
If you are accepted into the study, you will come to the study site (Fertility Center of the Carolinas in Greenville) to learn more about the study and complete your consent form. If you live outside the Columbia, SC area (more than a 60 mile drive), you may complete the study orientation process over the phone and Web. You will be mailed a consent form to sign and return to the study coordinator. This study will involve 3-4 in-person visits to the Fertility Center of the Carolinas office, each lasting approximately 1.5 to 2 hours.
You will complete some questionnaires that measure your diet and physical activity levels on a computer at home or other location where you have computer/internet access.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Women must meet the following criteria:
- •have been attempting pregnancy for at least 6 months is not currently pregnant has a clinical diagnosis of PCOS is not on oral medications for insulin resistance (such as metformin) or, if currently on such a medication, has been on the medication at a stable dose for at least 3 months willing not use fertility-enhancing medications over the 6-month study (with the exception of oral medications, such as clomiphene citrate, as directed by their physician) willing to be randomized to either dietary condition and able to make weekly meetings.
排除标准
- •Participants should not be in this study if they meet any of the following criteria:
- •have not been diagnoses with polycystic ovarian syndrome have been trying to conceive less than 6 months have a Body Mass Index less than 25 or greater than 45 kg/m2 are currently pregnant are younger than 18 or older than 35 years of age are a smoker are unable to come to the Columbia, SC area at least 3-4 times in a 6 month time period for assessments don't have access to the Internet and a computer don't have access to a scale for self-monitoring weight aren't willing to be randomized to either group have a psychiatric disease, drug or alcohol dependency, or uncontrolled thyroid condition have a major health condition, such as heart conditions, diabetes, and past incidence of stroke unable to receive consent from your doctor to participate if you currently are on blood pressure medications, have issues with dizziness, or have bone or joint issues have an eating disorder currently participating in a weight loss program or taking weight loss medications
研究组 & 干预措施
Low Calorie
Participants in this arm will be instructed on how to reduce their caloric intake and follow a low calorie diet
干预措施: Low calorie diet (Behavioral)
Vegan diet
Participants in this arm will follow a very low fat diet (~10% kcals from fat) and also a diet that has a low glycemic index and is free of animal products (vegan)
干预措施: Vegan diet (Behavioral)
结局指标
主要结局
Changes in body weight
时间窗: 6 months
次要结局
- Pregnancy rates(6 months)
研究者
Brie Turner-McGrievy
Assistant Professor
University of South Carolina