UC Davis Health Clinical Studies

The Effects of Sucrose-sweetened Beverage in African-American and Caucasian Women (SAAC) Study

In this study, we hope to learn about the metabolism of koolaid beverages that contain added sucrose (table sugar).

The main goal of this research study is to learn about the metabolism of koolaid beverages that contain added sucrose (table sugar). We hope that what we learn will help patients in the future. As with all research studies, no one can guarantee that participating in a research study will help you. We invite you to take part in a research study if you: - identify as either an African-American or non-hispanic White woman. - are a woman between the ages of 18-45 years. - are a nonsmoker who does not have diabetes mellitus or liver, kidney or thyroid disorders. - do not take hypolipidemic, anti-diabetic, anti-hypertensive or anti-depression medication. - have a stable body weight during the prior 6 months

Biological Study
Female, age 18-45

A Study of the Effect of Orange Juice or Sugar-Sweetened Beverages on Risk Factors for Type 2 Diabetes and Cardiovascular Disease

In this study, the study team will provide meals and either sugar-sweetened beverages or orange juice.

In this study, we hope to learn more about the effects of drinking sugar-sweetened beverages or orange juice. The beverages will be given with meals that we provide. Therefore, we will know exactly what the meals consists of. The study team will provide meals and either sugar-sweetened beverages or orange juice. We will compare the effects that the beverages have on blood triglyceride and cholesterol levels. We will look at your body’s reaction to insulin (hormone which lowers blood sugar).

Other study
Any, age 18 to 50 years old

Effects and optimal dose of gelatin and vitamin C on explosive performance of young active men

Can pre-workout supplementation with gelatin and vitamin C improve force transfer and performance in highly trained athletes?

We have recently discovered that a nutritional supplementation with gelatin and vitamin C might help improve force transfer and performance in highly trained athletes. We hope to further study this by measuring explosive performance with this nutritional intervention. To test this idea, study participants will follow a nutritional supplementation and exercise schedule for about 3 weeks. We expect that this project will determine the effects of this a simple and safe nutritional intervention on explosive performance

Other study
Male, age 18-25 years old

Metabolic Effects of Sugar and Aspartame

What are the effects of consuming sugar- and aspartame-sweetened beverages with standardized diets?

We hope to learn more about the effects of consuming sugar- and aspartame-sweetened beverages with meals in a situation in which we know exactly what the other meal components consists of. Therefore, throughout the first 6 weeks of the study we will provide the participants with the sweetened beverages and the meals that they will consume with the beverages. This will allow us to study if consumption of sugar-sweetened beverages has effects on your blood triglyceride and cholesterol concentrations and your body’s sensitivity to the hormone insulin without having to account for the other components in your usual diet. We also hope to learn more about the effects of consuming sugar-sweetened beverages with the meals people usually consume. Therefore during the last 4 weeks of the study participants will consume the beverages we provide with their normal meals.

Other study
Any, age 18 to 40 years old