13 Clinical Trials for Various Conditions
This clinical trial aims to learn if increasing water intake for five days can lower blood glucose in healthy, free-living individuals. The main question it aims to answer is whether increasing water intake will reduce daily blood glucose. Researchers will compare blood glucose when drinking adequate water to when the same individuals drink a low amount of water to see if blood glucose differs with water intake. Participants will be asked to drink a prescribed volume of water over two weeks while wearing a continuous glucose monitor and collecting two urine voids throughout each day.
This study is a randomized controlled intervention trial in adults aged 50+ years with overweight or obesity, which will compare three groups with different diet prescriptions: 1) pre-meal water consumption (500 ml, before each main meal) with a hypocaloric diet; 2) 1500 ml water consumed throughout the day with a hypocaloric diet; 3) hypocaloric diet with no instructions regarding water consumption. Smart water bottles will objectively assess water intake timing and volume. Urine osmolality, urine volume, and serum osmolality will be used as objective indicators of compliance with the water intake prescription. We will investigate changes in perceived hunger and fullness and appetite-regulating hormones as potential mechanisms by which premeal water could improve appetite regulation. We will also investigate the impact of water consumption and hydration on executive function capabilities, which may influence intervention adherence. Although increasing water intake could be an effective weight management strategy, no evidence-based recommendations exist for the timing of water intake needed for this benefit.
Dehydration is defined as the state of water deficit due to excessive water losses and/or small water intake. Underhydration is the result of inadequate water intake leading to activation of water hormonal homeostasis, characterized by elevated vasopressin, lower urinary output, and concentrated urine without any measurable changes in total body water. It is well established that dehydration (water deficit) decreases exercise performance and worsens mood, mainly in women. However, the impact of increased water intake in underhydrated individuals on their exercise capacity and mood is not known. The aim of the proposed study is to investigate the impact of increased water intake in underhydrated individuals on aerobic exercise performance and mood in both women and men.
The purpose of this exploratory cross-sectional investigation is to evaluate associations between tap water perceptions, water consumption behaviors, and hydration status in Latinx adults (18 - 65 y). The objective is to identify perceptual determinants that explain the associations between tap water avoidance and plain water intake and hydration status in Latinx adults. Aim 1: Characterize the degree to which individual- and community-level factors uniquely predict the perception that tap water is not safe in Latinx adults. Aim 2: Evaluate household income, education level, and US nativity as potential moderators of the associations between predictors and perceptions of tap water safety. Aim 3: Evaluate the influence of tap water safety perceptions on plain water intake and 24-h hydration status, after adjustment for predictors of tap water safety perceptions, in a sub-sample of Latinx adults.
Previous studies have indicated increased vasopressin due to hypertonic saline infusion impairs glucose regulation. The current study will examine the effect of low water intake on glucose regulation. No currently published study has investigated the acute effect of low water intake on glucose regulation using continuous glucose monitoring over the course of a full day. The aim of the study is to observe the effect of low water intake on glucose regulation in low drinkers. The study will study the glycemic responses to standardized meals in adults during an 11-hour period in two conditions: a) high water intake and b) low water intake. It is hypothesized that the area under the glucose curve will be greater in the low water intake trial as compared to the high water intake trial
Polycystic kidney disease (PKD) is a genetic disease that occurs in 1 in 500 individuals and leads to kidney failure in half of all affected. Currently, no treatments exist for PKD. PKD-affected kidney cells divide and multiply inappropriately, and form fluid-filled sacs called cysts. Kidney cysts continue to grow throughout life, destroying normal kidney tissue, leading to kidney failure. Based on evidence from basic science research it is believed that drinking high amounts of water can slow the abnormal cysts growth. This study aims to look at changes in urine composition with high water intake in PKD-affected persons compared to healthy individuals.
A randomized, controlled trial evaluating the air up® drinking system's impact on hydration and health outcomes. Participants will use air up® with Peach, Orangeade, or unscented pods and their effects on drinking habits, and health outcomes will be assessed over 12 weeks.
This study is a cluster randomized controlled trial with n=28 City of Philadelphia recreation centers (14 matched pairs) designed to determine the effectiveness of a comprehensive multi-level intervention to increase water access and appeal in community recreation centers on 1) center-level water intake as measured by water meters, and 2) purchase of outside beverages as measured by observations of recreation center youth.
It is widely argued that the promotion of water consumption, as an alternative to sugar-sweetened beverages, can assist in childhood obesity prevention efforts. Yet no studies have tested this argument in real world schools where flavored milk or juices are available. This trial will fill gaps by examining how promoting fresh water intake-both in schools that do and do not provide access to caloric beverages -impacts children's consumption of food and beverages both during and outside of school, and obesity.
Interventions that promote water consumption in place of sugar-sweetened beverages have shown promise for preventing childhood obesity in schoolchildren. Yet to date, no studies have examined whether applying this approach in childcare centers could help to prevent childhood obesity at an even earlier stage of development. This cluster-randomized controlled trial will fill gaps by examining how a multilevel childcare-based healthy beverage intervention affects young children's consumption of beverages and obesity.
Sugar-sweetened beverages (SSBs) are a major caloric source and the largest source of added sugars in the American diet. While many cities around the country have adopted anti-SSB policies such as soda taxes to reduce SSB intake, there has yet to be any studies to evaluate if the effects of these taxes, coupled with increased water access and promotion effort can lead to decreased sugar sweetened beverage consumption and increased water consumption. This quasi-experimental study evaluates how implementation of SSB taxes, installation of new water stations, and a multicultural water promotion campaign in parks impacts beverage intake in these settings as compared to soda taxes alone.
The aim of this study is to determine the influence of changes in water intake on changes in cognitive function among preadolescent children. Further, the proposed work will determine the relationship between urinary markers of hydration process and cognitive function. We hypothesize that an increase in water intake will result in greater cognitive performance. In addition, improvements in hydration demonstrated by lower urine concentration will be correlated with greater cognitive performance.
The purpose of the APEX study is to determine whether carbohydrate-electrolyte beverage intake promotes fluid balance during exercise in the heat compared with water or placebo intake.