Clinical Research Directory

Effects of Creatine and Heat Exposure on Exercise Performance and Body Water Distribution

The goal of this clinical trial is to learn whether creatine supplementation changes how the body adapts to repeated exercise in the heat in healthy recreationally active adults and varsity athletes. The study will also examine whether creatine affects fluid balance, blood volume changes and exercise performance. The main questions it aims to answer are: Does creatine supplementation increase plasma volume and total body water during repeated heat exposure more than placebo? Does creatine supplementation improve exercise performance after heat acclimation more than placebo? Does creatine supplementation influence cardiovascular responses to heat stress? Researchers will compare a creatine supplementation group to a placebo group to determine whether creatine changes the magnitude of heat acclimation adaptations. Participants will: Complete baseline measurements of body composition, hydration, blood markers, and exercise performance. Consume either creatine monohydrate or a placebo supplement daily Complete repeated supervised exercise sessions in a controlled heated environment Undergo repeated assessments of body water, temperature, heart rate, and exercise performance throughout the study

Posterior Flap Hydration of Clear Corneal Incisions in Cataract Surgery: Influence on Corneal Wound Tightness and Architecture

Sutureless clear corneal incision (CCI) is the most commonly used technique for creating an entrance wound in cataract surgery. Corneal incision hydration enhances wound tightness and reduces postoperative fluid suction from the ocular surface into the anterior chamber; thereby, loweres the risk of postoperative endophthalmitis. Various hydration methods have been employed to close corneal incisions. Standard CCI hydration may be ineffective in sutureless incisions with central wound gaping. Authors described a new technique of hydration: a posterior flap hydration technique. This study evaluates its effect on corneal wound tightness immediately after hydration, and assess wound architecture on the first postoperative day using anterior segment optical coherence tomography (AS-OCT).

Beverage Hydration Index of Different Solutions

In this study, the impact of two electrolyte hydration stick products (Hydramin containing an electrolyte/amino acid formulation and an identical electrolyte product with the amino-acids replaced with carbohydrate, dextrose) dissolved in 1 liter of water will be assessed and compared to a control (1 liter Smart Water). It is hypothesized that the addition of amino acids and glycine should improve the Beverage Hydration Index above water alone and perform comparably to the carbohydrate rich solution. This study will focus on general population (not athletes) and follow very similar approaches used in previous studies within the Center for Nutraceutical and Dietary Supplements Research, with the addition of blood glucose testing and body water measurements. Hydration will be assessed via fluid balance (the difference between the amount of water consumed and passed as urine) and calculations of beverage hydration index (the relative amount of urine passed after consumption of a drink compared to water)as well as time in positive fluid balance, and specific gravity, and sodium and potassium in urine. Blood glucose before and following consumption using finger pricks and a glucometer will also be assessed.

Bioimpedance In Pregnancy and Labour: A Fluid Balance Concept Study.

The purpose of our study is to find out if using a simple bed side test can tell us information about changes that occur in women's body water content. We would like to check if certain medical conditions could affect body water contents.

An Open Label Trial Assessing the Impact of a Hydration Formula on Overall Health

An Open Label Trial Assessing the Impact of a Hydration Formula on Overall Health

Feasibility of Using the Gatorade Sports Science Institute (GSSI) Labs App for Hydration Related Outcomes

This remote study will evaluate the feasibility of using the Gatorade Sports Science Institute (GSSI) Labs App for remotely collecting hydration related outcomes.

Potassium, Hydration, Cardiovascular, and Kidney Study (PHACKs)

Compared with White Adults, Non-Hispanic Black Adults are at an elevated risk of developing cardiovascular disease (CVD) and end stage chronic-kidney disease (CKD), two of the leading causes of death in the United States. Inadequate hydration status is associated with risk factors for both CVD and CKD. Prior data show that Black individuals are less likely to be adequately hydrated when compared with their White counterparts. Further, socioeconomic factors have been shown to influence hydration practices. Inadequate hydration influences certain hormones that regulate blood volume and impact blood pressure, but increasing potassium intake may provide some positive effects on normalizing these hormones and blood pressure. Black adults, in particular, are more likely to consume less potassium, have inadequate hydration, and tend to have higher blood pressure. As such, there is a critical need for effective strategies to address racial disparities in hydration and resultant health consequences; as well as establish the role of socioeconomic factors contributing to hydration. Therefore, the investigators are seeking to test the investigators' central hypothesis that water with a potassium supplement will improve hydration and cardiovascular health in young White adults (n = 20, 10 females, 10 males), and to a greater extent in young Black Adults (n = 20, 10 females, 10 males. The investigators will assess measures of blood pressure, arterial stiffness, and biomarkers in the urine and blood samples prior to and following a 14-day hydration intervention of 1) bottled water and 2) bottled water with potassium supplementation (2000mg potassium/day).