8 Clinical Trials for Various Conditions
This is a single center, randomized, double blind, placebo-controlled, crossover study to determine the acute effect of a developmental dietary supplement liquid shot product on cognitive task performance and perceived effect measures related to mood and mental energy. The study will be conducted in healthy participants.
The purpose of this study is to determine which substances in cocoa produces changes in mental energy. This is a double blind study. The primary outcome measures are performance on tasks of sustained attention (serial subtract, continuous performance test and Bakan task) at pre and 90, 120 and 160 minutes post intervention, energy and fatigue symptoms (profile of mood state), and ratings of motivation to perform cognitive tasks. The assigned interventions are the following:
Test the short-term effects of the acute consumption of two separate beverages containing different concentrations of polyphenols, a beverage containing 75 mg of caffeine and a flavored placebo beverage on mental energy and physical performance
This study aims to evaluate the effects of paraxanthine (200 mg and 300 mg) on energy, focus, appetite, and cognitive performance in healthy adults. Using a double-blind, placebo-controlled, crossover design, participants will receive paraxanthine or placebo 30 minutes before a meal. Cognition tests and visual Analogue Scale (VAS) ratings for energy, focus, productivity, satiety, and appetite will be collected at multiple time points post-consumption.
The primary objective of this randomized, double-blind, placebo-controlled, cross-over study is to assess the acute effects of a novel ingredient, guayusa on alertness and mental fatigue compared to a placebo. This trial will utilize the COMPASS cognitive task and cognitive demand battery (CDB) and mood, motivation, and energy measures with assessments taking place at baseline, 60- and 120-minutes post treatment on three separate testing days separated by \~7 days.
The purpose of this study is to assess the effectiveness and safety of the Alpinia galanga formulation, Theacrine formulation, and Caffeine formulation on fatigue, mental acuity, and cognitive health among overall healthy participants
Background: - Prader-Willi syndrome (PWS) and MC4R genetic mutations are two conditions that can cause problems with appetite regulation. People with PWS often have behavior and thinking problems. People with MC4R mutations may have problems with attention. These problems may be related to Brain-Derived Neurotrophic Factor (BDNF), a protein that is important for brain development. Researchers want to study people with PWS and MC4R mutations to see how BDNF is involved in these conditions. Specifically, body weight and brain function will be studied, and compared with healthy volunteers. Objectives: - To study how BDNF affects body weight and brain function in people with PWS and MC4R mutations. Eligibility: * Individuals of any age who have Prader-Willi syndrome or MC4R genetic mutations. * Healthy volunteers of any age to act as control participants. Design: * Participants will be screened with a medical history and physical exam. Height, weight, and waist/hip circumferences will be measured. Blood samples will be taken for genetic and other tests. * Participants will fill out questionnaires about eating habits, pain perception, and sleep behavior. * Participants will keep a 3-day food diary to record all food and drinks eaten. * Tests and questionnaires will be given to study thinking, speech, movement, behavior, and mood. Some tests will be done on a computer; other tests will be on paper. Tests may also involve performing tasks with blocks and other objects. * Participants may have other tests as directed. These will include hot and cold sensitivity tests, imaging studies like x-rays, and measurements of body fat and water content. * Treatment will not be provided as part of this study.
This study will explore conditions caused by the absence of certain genes on chromosome 11. These conditions include WAGR syndrome, which is characterized by a kidney tumor called Wilm s tumor, aniridia (absence of the iris of the eye), genital and urinary abnormalities, mental retardation, and possibly other symptoms. This study will examine how the genes on chromosome 11 affect people and whether the absence of specific genes is associated with specific symptoms. Healthy normal volunteers, people with isolated aniridia, and people with WAGR or another chromosome 11 gene deletion may be eligible for this study. Participants must be at least 6 years old. Parents of patients may also participate for genetic studies. Participants undergo some or all of the following procedures, depending on whether they are a child, adult, healthy volunteer or parent of a patient: * Medical history and physical examination, eye examination, blood, urine and saliva tests, electrocardiogram (EKG) and electroencephalogram (EEG) * X-rays, scans and other tests to measure body composition (fat, muscle and bone development and thickness) and MRI to examine the eyes and the brain and to measure abdominal fat * Ultrasound studies of the kidneys, ovaries and uterus (in females) and testes (in males) * Meal tests, food diaries and food preference tests * Questionnaires about eating and sleep habits, personality and character traits and responses to pain and injury * Neuropsychological tests * Tests of resting metabolic rate, energy expenditure and glucose (sugar) tolerance * Hot and cold sensitivity tests, vibration sensitivity test, cold tolerance test and smell identification test * Eye and hearing tests * Nerve conduction studies and study of sensory information conduction from peripheral nerves to the spinal cord and brain * Computer photography * Evaluation by sub-specialists (e.g., endocrinologist, ophthalmologist, physiatrist, neurologist or others) as indicated by the patient s medical history and test results