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Filter by:Background: - Studies have shown that animals such as monkeys and dogs have excellent sight and touch memory but perform poorly on sound memory tasks. Human brains have certain areas that are important for speaking and understanding language. These areas may be involved in sound and spoken word memory. Researchers want to study these areas of the brain to find out if the memory for sounds requires brain structures that are usually associated with language learning and are unique to humans. Objectives: - To use magnetic resonance imaging to study areas of the brain involved in sound memory. Eligibility: - Healthy right-handed volunteers between 18 and 50 years of age. They must be native English speakers and have completed high school. Design: - The study requires a screening visit and 1 or 2 study visits to the National Institutes of Health Clinical Center. - At the screening visit, volunteers will have a medical history taken. They will also have physical and neurological exams, and complete a questionnaire. Women of childbearing age will give a urine sample. Participants who have not had a magnetic resonance imaging (MRI) scan in the past year will have one at this visit. - At the second visit, participants will have tests of sound memory. They will listen to a set of nonsense words spoken through earphones and memorize the words. Then they will listen to the words again to judge if the words were part of the earlier list. Participants will have a 1 hour break, then do the sound memory test again. During the second test they will have repetitive transcranial magnetic stimulation (rTMS), which stimulates different regions of the brain. - If the group results from the testing sessions are positive, there will be a third visit. At this visit, participants will have a sound perception test. They will listen to words spoken through earphones and judge whether the words in the pair are the same or different. Participants will have rTMS during these tests as well.
Background: - New weight-loss intervention programs are being studied to determine their effectiveness in helping overweight and obese individuals reach a healthy weight. However, these programs often have not been tested against each other, and researchers are interested in determining which interventions are most effective both immediately and over the long term in promoting and maintaining weight loss. - Mindful Tai Chi is a combined form of the meditative martial art tai chi and the practice of mindfulness meditation. Tai chi and mindfulness meditation both have common philosophical underpinnings that address health promotion and well-being by applying the skill of non-judgmental awareness on a moment-to-moment daily basis. More research is needed on whether Mindful Tai Chi and mindfulness meditation can help improve various health factors in overweight and obese individuals. Objectives: - To compare the effects of Mindful Tai Chi, mindfulness meditation, walking, or a discussion group on the weight and well being of overweight and obese participants. Eligibility: - Healthy individuals at least 18 years of age who are either overweight or obese (body mass index between 25 and 40), have a sedentary lifestyle (have not engaged in more than 1 hour of aerobic exercise per week within the last month), and are willing to commit to a specific weight-loss intervention program. Design: - This study involves four visits for collecting information and 12 weeks of research study activities. - During the first visit, participants will hear information about the study and may ask any questions. They will be screened with a medical history and physical examination, and those eligible will be assigned to one of the four study groups: Mindful Tai Chi (MTC), Mindfulness Meditation (MM), Mall Walking (MW), or Weekly Discussion (WD) group. - For the second visit, participants will give blood and urine samples, receive an abdominal ultrasound, ride a stationary bicycle for 5 minutes, and fill out health-related questionnaires. - For 12 weeks, participants will be involved in the following activities depending on their group: - MTC: Class for 2 hours per week, emphasizing the meditation aspects of tai chi. Each session will include at least 20 minutes of meditation. Participants will receive written instructions and an accompanying DVD in comparable formats specifying a minimum of 30 minutes of daily home assignment. In weeks 2 and 8, participants will have a workshop for mindfulness skill application in daily activity. - MM: Class for 2 hours per week of mindfulness meditation. Participants will receive written instructions and an accompanying DVD in comparable formats specifying a minimum of 30 minutes of daily home assignment. In weeks 2 and 8, participants will have a workshop for mindfulness skill application in daily activity. - MW: Participants will meet at a designated mall location once a week for 2-hour walk. - WD: Participants will meet at the National Institutes of Health for weekly weight-loss discussion. - For the third and fourth visits, participants will receive the same procedures as those used in the second visit. These visits will occur at the end of the 12-week activity period and at a 3-month follow up visit.
The right to food and nutrition is established in the Universal Declaration of Human Rights as they are basic requirements for promoting and protecting good health. They can also be instruments to evaluate the quality of life of human beings and communities. Awareness of a healthy diet is the first step in behavioral change, and nutritional education can be an instrument for avoiding diseases resulting from both intake deficit and excess. Educational group actions can change food intake. This study will aim at evaluating, planning and implementing the impact of a nutritional education group action concerning the consumption of fruit and vegetables in adult and elderly individuals attended to by a Primary Health Care (PHCU) Unit. It will be a randomized assay involving two groups comprising male and females individuals distributed in the following fashion: Intervention Group, in which the educational group action (EGA) will be performed in addition to routine activities; and Control Group, the individuals from which will only participate in the routine activities in the PHCA (Teaching Health Care Unit). The total sample will comprise 80 individuals with 40 in each group. In order to determine the consumption of fruit and vegetables, a weekday and a Sunday 24-hour recalls will be performed 2 (short-term effects) and 6 (medium-term effects) months after completing the intervention. The educational group activities will consist of two-hour group dynamics and cooking workshops once a week and for five weeks. Serum carotenoid dosages will also be performed in the two groups by sub-sampling (n=40) with the purpose to validate the estimated intake of fruit and vegetables obtained from the recalls.
Background: - Traumatic brain injury may have a range of effects, from severe and permanent disability to more subtle functional and cognitive deficits that often go undetected during initial treatment. To improve treatments and therapies and to provide a uniform quality of care, more research is needed into different treatments for traumatic brain injury. - Exercise has been shown to improve movement and balance in people with strokes, cerebral palsy, and other conditions that affect the brain, and can improve symptoms of memory problems or depression. Bright light therapy has also been shown to improve mood in people with depression. Researchers are interested in studying problems with movement, balance, thinking, and mood in people with traumatic brain injury. By comparing the effects of exercise and bright light exposure on brain function, new treatments may be developed for acute traumatic brain injury. Objectives: - To compare the effects of exercise and bright light therapy on the brain function of individuals with traumatic brain injury. Eligibility: - Individuals between 18 and 44 years of age who either have been diagnosed with traumatic brain injury or are healthy volunteers. Design: - Individuals with traumatic brain injury will have four outpatient evaluation visits at the clinical center, a 3-month home exercise program, and a 3-month bright light exposure program at home. Healthy volunteers will have one evaluation visit at the clinical center. - At the first study visit, all participants will have a full physical examination and medical history. Individuals with traumatic brain injury will also have an eye exam to determine if it is safe for them to receive light therapy. - All participants will have the following initial tests: - Tests of walking and movement, including monitoring by a physical therapist; tests to record joint movement and evaluate muscle function; tests that combine movement, thinking, and speaking; and balance and reaction time tests. - Magnetic resonance imaging scans - Tests of thinking and mood, including questionnaires, computerized tests, and simple action tests. - Participants with traumatic brain injury will have separate 3-month sessions of exercise and bright light therapy, with additional evaluation visits between each 3-month session and at the end of the study. Between the 3-month sessions, participants will have 1 month with no intervention. - Exercise sessions will involve regular workouts on an elliptical machine for 30 minutes for 5 days a week, and bright light therapy sessions will involve sitting in front of a light box for 30 minutes for 5 days a week. Participants will keep a journal to monitor the effects of the therapy.
The aim of the study is to assess the efficacy and tolerability of the low-volume supplement. The investigators randomized critically ill patients to receive Intestamin plus Fresubin or Fresubin alone.
Irritable bowel syndrome (IBS) is a common disorder which presents with abdominal pain or discomfort in association with altered bowel habit. IBS is further subcategorized as three types according to the predominant bowel movement pattern: IBS with constipation (IBS-C), IBS with diarrhea (IBS-D), and mixed-IBS (IBS-M). The exact causes of IBS remain incompletely understood, but proposed mechanisms include abnormal motility, visceral hypersensitivity, abnormal brain-gut interactions, psychological distress, and altered GI tract motility. Lubiprostone, a novel drug that works by activating the colonic ClC-2 chloride channel, has been approved for use in patients with chronic idiopathic constipation and recently approved for the treatment of IBS-C in women aged 18 and older. By activating the ClC-2 chloride channel in the colon, lubiprostone allows more fluid secretion into the intestinal lumen which leads to softer stool consistency. In phase III clinical trials, patients with IBS-C receiving lubiprostone have reported improvements in many symptoms such as abdominal pain and constipation. However, there is limited physiologic data to explain how exactly lubiprostone improves IBS-C symptoms. The Smartpill is a novel non-digestible capsule that is capable of measuring intraluminal pH, pressure, and temperature in the gastrointestinal (GI) tract. Smartpill has been shown to accurately measure whole gut as well as regional (i.e. stomach, small bowel, colon) transit time. The primary aim of this study is to determine the effects of lubiprostone on whole GI tract transit, colonic transit, motility, and intraluminal pH in patients with IBS-C through evaluation with the Smartpill. The investigators propose to study the effect of lubiprostone vs. placebo on these parameters, and secondarily to evaluate changes in these parameters with differing doses of lubiprostone. The investigators hypothesize that lubiprostone will increase whole GI and colonic transit compared to placebo in patient with IBS. the investigators do not expect a change in intraluminal pH with lubiprostone compared to placebo.
eConsulta is a before and after quasi-experimental study without control group and its purpose is to asses the impact of virtual visits in primary care on the frequency of attendance of the patients to the primary care centre. The use of virtual consultations should lower the number of face to face visits to primary care. It also should create satisfaction to both users: primary care professionals and patients.
Background: Excessive exposure to psychosocial stress can be a potent trigger for somatic diseases and psychological disorders, a cause for missing work, and eventually lead to high economic loss. Therefore, for health and economic reasons the assessment of effectiveness of stress preventive interventions is of high relevance. According to several clinical studies, Taiji, a Chinese form of mindful and gentle movements, can significantly reduce symptoms of somatic diseases and psychological disorders. Some recently conducted Taiji-studies with healthy subjects indicate a stress protective effect. However, the stress protective impact of Taiji regarding psychosocial stress has not yet been examined. Objective: To investigate the efficacy of a 12 week Taiji training as a stress prevention program by measuring psychosocial stress reactivity in a laboratory setting, as well as the subjective perception of stress and coping-resources in daily life of 70 healthy volunteers. Hypothesis: Healthy subjects attending a 12 week Taiji course (frequency: twice a week for 1h) will show significantly reduced psychobiological reactivity, decreased stress perception and increased coping-resources on a standardized psychosocial stress test compared with healthy subject of the waiting list.
The purpose of this project is to develop and evaluate the effects of a computer-tailored intervention targeting pain barriers and catastrophizing in adults having cardiac surgery. The hypotheses are that in the experimental group, in comparison to the control group, participants will show lower levels of pain, less pain interference in their activities, less attitudinal barriers, and less pain catastrophizing. A pilot-RCT is privileged to assess the preliminary effects of the intervention on the following outcomes: pain intensity, analgesic consumption, pain interference, barriers and pain catastrophizing.
This is a Phase 1 randomized, double-blind, sponsor open, 4 arm, 2 way cross-over study using 2 cohorts. The objective of the study is to evaluate the pharmacodynamics (PD) effects and the pharmacokinetic (PK) of single day dosing of 2 mg and 4 mg doses of ertugliflozin (Ertu, PF-04971729/MK-8835) each administered once vs twice daily (morning [AM] and evening [PM]) in adults with type 2 diabetes.