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62 Physiology Trials Near You
Power is an online platform that helps thousands of Physiology patients discover FDA-reviewed trials every day. Every trial we feature meets safety and ethical standards, giving patients an easy way to discover promising new treatments in the research stage.
Learn More About PowerModified Release Glipizide for Gastrointestinal Absorption Study
Ann Arbor, Michigan
In vivo drug dissolution in the gastrointestinal (GI) tract is largely unmeasured. The purpose of this clinical study is to evaluate the in vivo drug dissolution and systemic absorption of modified release formulations of the BCS Class II drug Glipizide by direct sampling of stomach and small intestinal luminal content, blood, urine and feces.
Expanding current knowledge of drug dissolution in vivo will help to establish physiologically relevant in vitro models predictive of drug dissolution.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 1
Age:18 - 55
Key Eligibility Criteria
Disqualifiers:Cardiovascular Disease, Diabetes, Allergies, Others
Must Not Be Taking:Aspirin, Blood Thinners
40 Participants Needed
Home Exercise Program for Heart Condition
Ann Arbor, Michigan
This trial tests a home exercise program using telemedicine for people with a specific heart condition called Fontan physiology. The goal is to improve their fitness and reduce barriers to accessing exercise programs. Participants will get online support to help them stay active. Exercise training has been shown to increase exercise capacity in survivors of Fontan surgery.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:19+
Key Eligibility Criteria
Disqualifiers:Pregnancy, Severe Ventricular Dysfunction, Others
Must Not Be Taking:Intravenous Inotropes
53 Participants Needed
Wellness & Exercise Program for Single Ventricle Heart Disease
Ann Arbor, Michigan
This trial is testing if teaching kids about health in groups and giving them custom exercise plans can help children with a special heart condition become healthier and more active.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:13 - 18
Key Eligibility Criteria
Disqualifiers:Severe Ventricular Dysfunction, Arrhythmia, Others
Must Not Be Taking:Intravenous Inotropic Drugs
30 Participants Needed
Surgical vs. Lifestyle Interventions for Type 2 Diabetes
Pittsburgh, Pennsylvania
This research study is being performed to begin to determine the effectiveness of two dominant bariatric surgery procedures versus an intensive lifestyle intervention to induce weight loss in patients and promote improvements in Type 2 diabetes mellitus (T2DM) in moderately obese patients.
T2DM is currently the 6th leading cause of mortality in the United States and is a major cause of kidney failure, blindness, amputations, heart attack, and other vascular and gastro-intestinal dysfunctions. Traditionally, treatments include intensive lifestyle modifications with or without glucose lowering agents. Neither treatment alone, or in combination, results in complete resolution of diabetes and its potential long-term complications. Bariatric surgery has been proven as an effective treatment to accomplish sustained and significant weight loss for those with severe obesity and has been shown to induce long-term remission of T2DM. However, despite enthusiasm for these potential treatment options, it is not clear whether diabetes is influenced by the type of surgery or by the amount of weight lost or if bariatric surgery is more effective than non-surgical weight loss induced by diet and physical activity in T2DM patients with moderate BMIs (30-40kg/m2; Class I and Class II obesity, or approximately 65-95 pounds overweight depending on your height). More well-controlled studies are needed to more completely inform health care decision making and clinical practice in this area. This research study aims to obtain preliminary information regarding the effectiveness of two major types of bariatric surgery, Laparoscopic Roux-en-Y Gastric Bypass and Laparoscopic Adjustable Gastric Banding versus an intensive lifestyle intervention to induce weight loss with diet and increased physical activity.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:25 - 55
Key Eligibility Criteria
Disqualifiers:Prior Bariatric Surgery, Poor Health, Addiction, Smoking, Pregnancy, Others
Must Be Taking:Anti-diabetic Medications
69 Participants Needed
5-Step Method for Families Affected by Substance Use
Winchester, Virginia
The purpose of this study is to see if it is possible (feasible) to introduce a behavioral intervention for family members affected by a relative's misuse of drugs and/or alcohol in the United States. The intervention is called the 5-Step Method. It will be a randomized control trial, with a total of 36 participants, and 18 in each group. The study lasts for approximately 12 weeks for the participant. The intervention group will receive a self-help handbook of the 5-Step Method, and the control group will not. Although the control group will not receive an intervention from the research team, they are allowed to look for and use any currently available program for affected family members (for example, Al-Anon, or Nar-Anon) during the study period. The study is being done because the 5-Step Method has not been used or evaluated in the U.S. (or the creators are unaware that it is in use here). There are two aims (objectives): (1) to see if it is feasible to introduce the 5-Step Method into the U.S.; (2) to look at trends in the baseline and followup survey scores to see if there is evidence of preliminary participant response.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Violent Relative
36 Participants Needed
Children's Therapy for Emotional and Behavioral Issues
Guelph, Ontario
The goal of this clinical trial is to learn about how psychotherapy works for children and adolescents aged 8 - 15 with anxiety, depression, trauma, or disruptive behaviour. The main question it aims to answer is:
• Is the biobehavioural regulation of negative emotion a transdiagnostic mechanism of treatment response in psychotherapy for children with anxiety, depression, trauma and/or disruptive behaviour?
Children and their parents will be randomly assigned to an evidence-based, transdiagnostic treatment (the Modular Approach to Therapy for Children with Anxiety, Depression, Trauma, and Conduct Problems; MATCH-ADTC) or a waitlist control condition. Participants in both groups will complete a baseline assessment, weekly measures consisting of brief symptom scales and medication tracking, and quarterly assessments every 3 months. Following the intervention/waitlist period, our team will conduct post-test assessments. All assessments, except for the weekly surveys, will consist of symptom scales, clinical interviews, experimental tasks and physiological measures.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:8 - 15
Key Eligibility Criteria
Disqualifiers:Low Cognitive Functioning, Suicidality, Psychosis, Others
202 Participants Needed
Dopamine Signaling Study for Opioid Use Disorder
Bethesda, Maryland
Background:
The chemical messenger dopamine carries signals between brain cells. It may affect addiction. Heavy use of pain medicines called opioids may decrease the amount of dopamine available to the brain. Researchers want to study if decreased dopamine decreases self-control and increases impulsiveness.
Objective:
To learn more about how opiate use disorder affects dopamine in the brain.
Eligibility:
Adults 18-80 years old who are moderate or severe opiate users
Healthy volunteers the same age
Design:
Participants will first be screened under another protocol. They will:
* Have a physical exam
* Answer questions about their medical, psychiatric, and alcohol and drug use history
* Take an MRI screening questionnaire
* Give blood and urine samples
* Have their breath tested for alcohol
Participants will have up to 3 study visits.
They will have 2-3 positron emission tomography (PET) scans. A radioactive chemical will be injected for the scans. Participants will lie on a bed that slides in and out of the donut-shaped scanner. A cap or plastic mask may be placed on the head.
Vital signs will be taken before and after the PET scans.
Participants will get capsules of placebo or the study drug. They will rate how they feel before, during and after.
Participants will have their breath and urine tested each day.
Participants will have magnetic resonance imaging (MRI) scans. They will lie on a table that slides into a cylinder in a strong magnetic field. They may do tasks on a computer screen while inside the scanner.
Participants will have tests of memory, attention, and thinking.
Participants will wear an activity monitor for one week....
Trial Details
Trial Status:Recruiting
Trial Phase:Early Phase 1
Key Eligibility Criteria
Disqualifiers:Psychiatric Disorders, Major Medical Problems, Others
Must Be Taking:Opioid Agonists, Naltrexone
360 Participants Needed
Antibiotics Impact on Healthy Subjects
Bethesda, Maryland
More than 250 million courses of antibiotics are prescribed annually in the ambulatory care setting in the United States alone, including more than 40 million in children under 18 years of age. The perception that antibiotic use has minimal attendant adverse side effects contributes to the over-utilization of antibiotics in clinical circumstances when they are not strictly indicated. We have learned much about the human microbiome. The emerging view is of profound life-long bi-directional interactions between our microbiota and our cells. Perturbations in the microbiota affect metabolic, immune, and cognitive physiology in experimental animal models. When a person takes an antibiotic, the antibiotic diffuses via the blood into all body compartments, selecting for resistance. We propose to examine the effects of two commonly used antibiotics (the beta-lactam, amoxicillin and the macrolide azithromycin) on human microbial populations and on metabolic and immune physiology, studying healthy human volunteers in a randomized controlled clinical trial at the NIH Clinical Center. Our hypothesis is that in addition to acutely perturbing the human microbiome, these agents will have measurable metabolic and immunologic effects, with residual effects in the weeks that follow. To test this hypothesis, we will assess the effects of a brief therapeutic course of antibiotics on microbiome and metagenome composition. After an initial evaluation period, antibiotics will be given for 7 days or 5 days (depending on the antibiotic), and there will be a post-treatment evaluation. A control group will receive no drug intervention. Specimens will be obtained from multiple sites at each of 10 time points occurring before, during, and after antibiotic administration, and used for estimating bacterial and fungal composition and gene content. We will also assess the effects of the antibiotic course on markers of innate and adaptive immunity as well as markers of metabolic and hormonal physiology. A subgroup of subjects will be studied in the clinical center metabolic chamber to assess 24-hour energy expenditure and its components (sleeping, diet-induced, and activity energy expenditure), as well as macronutrient oxidation rates (carbohydrate, fat, and protein), during 3 of the 10 study visits. In addition to the primary data analyses, we will build a model that integrates the temporal data to begin to understand the complex intertwined physiology between microbiome and host.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Phase 1
Age:18 - 49
Key Eligibility Criteria
Disqualifiers:Obesity, Hypertension, Diabetes, Asthma, Others
Must Not Be Taking:Antibiotics, Corticosteroids, Immunosuppressants, Others
108 Participants Needed
OPM MEG Brain Activity Mapping
Bethesda, Maryland
This trial is testing a new sensor called OPM that measures brain activity by detecting magnetic fields. These sensors can be placed directly on the scalp and offer advantages over traditional methods. It targets healthy adults aged 18-65 who have had an MRI scan. The sensors are placed on a cap and can accurately measure the brain's magnetic fields.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 65
Key Eligibility Criteria
Disqualifiers:Metal In Body, Others
75 Participants Needed
Advanced MRI Techniques for Cardiovascular Disease
Bethesda, Maryland
Background:
Magnetic resonance imaging (MRI) is an important non-invasive tool to study and diagnose cardiovascular disease. MRI scanners use strong magnetic fields and radio waves to create pictures of body organs. Researchers want to find better MRI methods and new ways of imaging cardiovascular disease and better understand normal and abnormal cardiovascular and brain function. Researchers are also interested in seeing if gadolinium, the commonly used MRI contrast agent, stays in the body long after the MRI was performed.
Objectives:
To develop new methods for imaging the heart and other organs of the body.
To describe cardiovascular diseases using newer MRI methods
To look at the relationship between cardiovascular disease and cardiovascular risk factors and other organ systems
To look for gadolinium deposits in the brain from prior exams.
Eligibility:
Healthy people and people with known or suspected cardiovascular disease ages 7 and older may be eligible for this study.
Researchers may be particularly interested in those who:
* Have suspected or known cardiovascular disease
* Were previously exposed to a gadolinium-based contrast agent,
* Need to have a heart MRI scheduled
* Need a test of the heart or other body part or will be undergoing a future cardiac catheterization
Design:
There are multiple arms to the study with optional components; therefore, there are multiple variations as to what an individual participant s experience may involve.
Participants will have an MRI scan lasting up to 2 hours. The scanner is a large hollow tube. During the scan, there may be loud knocking and buzzing sounds caused by the scanner. Participants will lie on a table that slides in and out of the tube. Their vital signs may be monitored.
Participants may have a test of heart electrical activity using wires connected to pads on the skin.
Participants may have blood drawn.
Participants may be injected with an MRI contrast agent through a plastic tube inserted in the arm.
No Placebo Group
Trial Details
Trial Status:Recruiting
Age:7 - 100
Key Eligibility Criteria
Disqualifiers:Pregnancy, Breastfeeding, Cardiac Devices, Others
5000 Participants Needed
Non-Invasive Brain Stimulation Techniques Development
Bethesda, Maryland
Background:
Noninvasive brain stimulation (NIBS) may help diagnose and treat psychiatric and neurological illness. But there is not enough research on how to apply NIBS. This includes how strong to make it, where on the brain to apply it, and for how long. Researchers also want to see what the brain is doing when it receives NIBS.
Objective:
To increase the effectiveness of NIBS.
Eligibility:
Healthy native English speakers ages 18-65
Design:
Participants will be screened under another protocol with:
Medical and psychiatric history
Psychiatric evaluation
Physical exam
Urine tests
All participants will start with a 2-hour visit for screening. (see below). They may learn how to do tasks that will be used later. After the screening session, they will be scheduled for an MRI session.
The next part of the study is 4 substudies. Each substudy includes up to 4 sessions. A session is usually 2-3 hours but can last up to 8 hours. Participants can join multiple substudies, but only 1 at a time. They can do only 1 session on a given day.
Each substudy includes the following:
Behavioral tests: Interviews; questionnaires; simple tasks; and tests of memory, attention, and thinking
Electromyography: Small sticky electrodes on the skin measure muscle activity.
Transcranial magnetic stimulation: A wire coil is held to the scalp. A brief electrical current passes through the coil and affects brain activity.
Magnetic resonance imaging (MRI): Participants lie on a table that slides into a machine that takes pictures of the brain. A coil is placed over the head. They will perform simple tasks while in the scanner. They may also get TMS.
Electroencephalography: Small electrodes on the scalp record brain waves.
Sponsoring Institution: National Institute of M
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 65
Key Eligibility Criteria
Disqualifiers:Pregnancy, Axis I Disorders, Seizures, Others
Must Not Be Taking:Tricyclics, Antipsychotics, Stimulants, Others
180 Participants Needed
Sociocultural Influences on Pain Assessment
Bethesda, Maryland
Objective
The current proposal investigates behavioral, psychophysiological, and social processes that may help explain biases and disparate outcomes in pain. Health disparities, or health outcomes that adversely affect disadvantaged populations, are pervasive and apparent in many diseases and symptoms, including pain. Pain is the number one reason individuals seek medical treatment. Health disparities in pain encompass both differences in pain experience and treatment for pain. For instance, research indicates that Black individuals report increased pain and have reduced pain tolerance relative to White individuals, yet doctors are less likely to treat minority patients pain and underestimate their pain experience. This project aims to address this systemic discrepancy by focusing on interpersonal processes that may contribute to these disparities, including socially-relevant responses to pain (i.e. pain expression) and pain assessment (e.g. visual attention). The proposed research aims to determine whether the study of pain expressions and their assessment can yield insights on how social factors shape pain and its treatment. Further, we test the efficacy of potential interventions designed to improve accuracy and reduce biases in pain assessment. If successful, this work will form the foundation of a new research program that will link the field of pain research with the field of social neuroscience, and forge new insights on the critical problem of health disparities in pain.
Study population
We will accrue up to 700 total healthy volunteers to target 240 completers
Design
Our overall aim is to understand how social factors influence the assessment and management of pain, and to gain insight into psychosocial processes that may underlie health disparities in pain. We propose a series of studies designed to test these links. First, we will measure pain perception and physiological responses to painful stimuli in a diverse group of individuals to test for sociocultural and biological influences on pain and pain-related responses. In subsequent studies, new participants ("perceivers") will view images of these initial participants ("targets") and will provide estimates of 'targets' pain experience. We will measure a) whether perceivers can accurately estimate 'targets' pain experience; b) whether accuracy differs as a function of similarity between target and perceiver (ingroup vs outgroup); and c) whether individuals can improve accuracy through feedback.
Outcome measures
Primary outcome measures for all experiments will be decisions about pain (experienced by self or other) measured with visual analogue scales, reaction time, and/or categorical judgments (pain/no pain). We will also measure physiological responses (e.g., facial muscle response, skin conductance, pupil dilation) and brain responses using functional magnetic resonance imaging (fMRI) as secondary outcome measures. We will test whether pain and pain-related responses varies as a function of sociocultural/demographic factors (e.g. race, ethnicity, sex) and whether accuracy in assessing others' pain is influenced by group similarity (i.e. ingroup vs. outgroup) and training (e.g. performance-related feedback)....
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 60
Key Eligibility Criteria
Disqualifiers:Neurological Conditions, Mood Disorders, Chronic Pain, Others
Must Not Be Taking:Opiates, Antidepressants, Anticonvulsants, Others
700 Participants Needed
Neuroimaging Techniques Development Related to Addiction
Bethesda, Maryland
Background:
Abusing alcohol, drugs, and other substances can cause serious health problems. These substances also can affect brain function. Researchers want to learn more about brain function by using magnetic resonance imaging (MRI). This uses a magnetic field and radio waves to take pictures of the brain.
Objective:
To develop new ways to use MRI to study the brain.
Eligibility:
Healthy people 18 years of age or older.
Design:
Participants will be screened with a medical history, physical exam, and blood and urine tests.
They will answer questions about their drug use and psychiatric history. They will be asked about family history of alcoholism or drug abuse.
Participants will answer questions to see if they can participate in MRI.
Participants will have MRI scans. The scanner is a metal cylinder in a strong magnetic field. Participants will lie on a table that slides in and out of the cylinder. A device called a coil may be placed over the head.
Each sub-study will include up to 3 different MRI visits. Participants can be in multiple sub-studies. But they can have only 1 MRI per week and 20 per year.
During MRI visits, participants may have urine collected. They may get another MRI questionnaire.
Participants may have a clinical MRI brain scan. This may show physical problems in the brain.
During some scans, participants may perform simple movement, memory, and thinking tasks.
Participants may be connected to a machine to monitor brain activity during the scan. Small metal electrodes will be placed on the scalp. A gel will be placed in the space between the electrodes and the scalp.
...
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Pregnancy, Psychiatric Disorders, Neurological Disorders, Claustrophobia, Others
Must Not Be Taking:Antidepressants, Stimulants
192 Participants Needed
Room Temperature Effects on Calorie Burn in Obesity
Bethesda, Maryland
Background:
- The way that the body burns calories is known as energy expenditure. Some studies show that when we are cold, we burn more calories to keep our bodies warm. Brown fat is a special kind of fat that can use energy to keep the body warm. Small animals and infants have been known to have brown fat for many years. Recently, it has been suggested that adult humans also have brown fat. If brown fat becomes active (burns calories) in adult humans when exposed to cold, then these people would tend to burn off more calories and might not gain weight easily. Learning more about the relationship between energy expenditure, brown fat, environmental temperature, and body temperature may help explain why some people become obese and other people do not.
Objectives:
* To better understand how the body burns calories when exposed to different temperatures.
* To study brown fat and how it burns calories in cold temperatures.
Eligibility:
* Healthy men between 18 and 35 or 55 and 75 years of age.
* Healthy women between 18 and 35 years of age.
* To control for ethnicity, participants must be non-Hispanic whites or African Americans.
Design:
* Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected.
* Participants will stay in the Metabolic Unit of the National Institutes of Health Clinical Center as inpatients for no more than 14 days. The length of the hospital stay will depend on how participants respond to the different study temperatures.
* Every afternoon, participants will walk for 30 minutes on a treadmill. All meals will be provided.
* Participants will stay up to 5 hours per day in a specialized room with different temperature settings. Temperatures will range from about 61 degrees to 88 degrees Fahrenheit. Body temperature, activity, calorie burning, and cold/hot sensations will be monitored. On the study day of the coldest temperature, participants will have an imaging study to look for brown fat activity.
* Participants will be compensated for their time and participation at the end of the study.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Thyroid Disorders, Cardiovascular Disease, Diabetes, Liver Disease, Others
Must Not Be Taking:Antihypertensives, Metabolism-altering
120 Participants Needed
MRS Brain Imaging for Normal Brain Function
Bethesda, Maryland
This study will use magnetic resonance spectroscopy (MRS) to measure in the brain the transfer of \[13\]C as it is naturally metabolized from glucose to specific chemical transmitters. From this method, we can measure the rate of production of an important excitatory neurotransmitter (glutamate) as well as an inhibitory neurotransmitter (GABA).
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 65
Key Eligibility Criteria
Disqualifiers:Axis 1 Diagnosis, HIV, Neurological Illness, Diabetes, Others
Must Not Be Taking:Anticholinergics, Benzodiazepines, Fluoxetine, Others
200 Participants Needed
Psychological Interventions for Pain Perception
Bethesda, Maryland
Background:
- Painful stimuli cause changes in a network of brain regions called the "Pain Matrix." But most of these regions respond to many other stimuli, not just pain. Researchers want to understand how different factors influence pain. They want to test what happens when people expect different levels of pain and receive treatments that can modify pain. They want to see if these factors influence decisions about pain and how the body responds to it. They also want to compare pain with responses like taste and vision.
Objectives:
- To better understand how pain and emotions are processed and influenced by psychological factors.
Eligibility:
- Healthy volunteers ages 18-50.
Design:
* This study requires 1 to 2 clinic visits that last 1 to 3 hours.
* Participants will be screened with medical history and physical exam.
* Some participants will have one or more magnetic resonance imaging (MRI) scans of their brain. For MRI, participants will lie on a table that slides in and out of a cylinder. The scanner makes loud knocking noises. They will get earplugs.
* Participants heart activity will be recorded with electrocardiogram. Their pulse, sweating, and breathing will be monitored.
* Some participants will take a taste test. Others may perform simple tasks. Others may receive pain in their arm, leg, or hand. The pain will come from heat or electric shocks. Others may judge pain using a topical pain-relieving cream. Some of these tests may be given during MRI.
* Participants will fill out questionnaires.
* The study will last 3 years.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 50
Key Eligibility Criteria
Disqualifiers:Cardiovascular, Neurological, Mood Disorders, Others
Must Not Be Taking:Opiates, Antidepressants, Anticonvulsants, Others
500 Participants Needed
TMS for Cognitive Impairment
Toronto, Ontario
The goal of this interventional study is to develop an individualized approach using transcranial magnetic stimulation (TMS) in a high-precision manner. This approach will use TMS to modulate brain activity at multiple locations simultaneously. Functional magnetic resonance imaging (fMRI) and electroencephalograph (EEG) will record the responses and guide the stimulation. Specifically, the placement and orientation of TMS coils will be tailored to stimulate the targeted functional brain areas informed by fMRI. To maximize the interventional effect, stimulation pulses will be delivered based on EEG oscillations.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Pregnancy, Seizure History, Metal Implants, Others
160 Participants Needed
Transcranial Magnetic Stimulation for Healthy Volunteers
Baltimore, Maryland
Background:
People with substance use disorder (SUD) often have changes in brain function that can make it difficult to control drug-seeking behavior. These changes may heighten the urge to use drugs or lessen the desire to seek nondrug-related rewards. Researchers want to know how a technique called transcranial magnetic stimulation (TMS) may cause changes in brain activity that may help people with SUD.
Objective:
To test TMS in healthy volunteers.
Eligibility:
Healthy people aged 18 to 45 years who are right-handed.
Design:
Participants can volunteer for up to 5 different experiments. Each experiment requires 2 to 8 clinic visits. Each visit will last 3 to 7 hours.
Some visits will include TMS. A coil will be placed on the participant s head. A brief electrical current will pass through the coil to create a magnetic field. Participants may feel a tapping or pulling sensation on the skin under the coil. They may feel a twitch in their face, neck, arm, or leg muscles. Participants may be asked to tense certain muscles during TMS.
Some visits will include functional magnetic resonance imaging (fMRI) scans. Participants will lie on a bed that slides into a large tube. They will perform tasks on a computer inside the tube. The fMRI will show which parts of the brain are used during each task.
Participants will perform tasks on a computer. Some tasks may be done at a desk as well as during TMS and fMRI. Participants may look at images, listen to sounds, smell odors, or taste flavored liquids. Their vital signs may be monitored and their eye movements may be tracked during tasks.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Early Phase 1
Age:18 - 45
Key Eligibility Criteria
Disqualifiers:Neurological Disorders, Psychiatric Disorders, Seizure Risk, Others
Must Not Be Taking:Psychotropics, Anticonvulsants
600 Participants Needed
Nicotine Patch for Depression
Baltimore, Maryland
Background:
Nicotine dependence leads to about 480,000 deaths every year in the United States. People with major depressive disorder (MDD) are twice as likely to use nicotine compared to the general population. They have greater withdrawal symptoms and are more likely to relapse after quitting compared with smokers without MDD. More research is needed on how nicotine affects brain function in those with MDD.
Objective:
To understand how nicotine affects symptoms of depression and related brain function.
Eligibility:
People aged 18 to 60 years, at the time of consent, with and without MDD who do not smoke cigarettes or use other nicotine products.
Design:
Participants will have 2 or 3 study visits over 1 year.
Participants will have 2 MRI scans no less than 4 days apart. Each scan visit will last 5 to 7 hours. At each scan, they will have urine and breath tests to screen for recent use of alcohol, nicotine, and illegal drugs.
Before each scan, they will take 1 of 2 medications: nicotine or placebo. Participants will receive each medication once. They will not know which medication they are receiving at each scan.
For each MRI scan, they will lie on a table that slides into a cylinder. Sometimes they will be asked to lie still. Sometimes they will complete tasks on a computer. Tasks may include identifying colors or playing games to win money. Each scan will take about 2 hours.
Participants will answer questions about their thoughts, feelings, and behaviors before and after each scan.
They will have a blood test after each scan.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 60
Key Eligibility Criteria
Disqualifiers:Suicidal Ideation, Schizophrenia, Bipolar, Others
Must Be Taking:Serotonin Modulators
620 Participants Needed
Powered Prosthesis for Amputation
Raleigh, North Carolina
Lower limb amputees rely on their prosthetic to remain active and lead an independent life. In recent years, measuring residual muscle activity has been used to interpret a user's intent and thereby modulate prosthesis control. However, little knowledge is held on how residual muscle activity differs from non-amputated muscle. The research team will analyze and compare neuromuscular physiology in non-amputee individuals and amputees' non-amputated and residual muscles across functional tasks to better understand how amputees control their muscles. Such information will inform design of modern prosthesis controllers.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 64
Key Eligibility Criteria
Disqualifiers:Stroke, Heart Disease, Ulcers, Others
80 Participants Needed
Why Other Patients Applied
"I've tried several different SSRIs over the past 23 years with no luck. Some of these new treatments seem interesting... haven't tried anything like them before. I really hope that one could work."
ZS
Depression PatientAge: 51
"I changed my diet in 2020 and I’ve lost 95 pounds from my highest weight (283). I am 5’3”, female, and now 188. I still have a 33 BMI. I've been doing research on alternative approaches to continue my progress, which brought me here to consider clinical trials."
WR
Obesity PatientAge: 58
"I was diagnosed with stage 4 pancreatic cancer three months ago, metastatic to my liver, and I have been receiving and responding well to chemotherapy. My blood work revealed that my tumor markers have gone from 2600 in the beginning to 173 as of now, even with the delay in treatment, they are not going up. CT Scans reveal they have been shrinking as well. However, chemo is seriously deteriorating my body. I have 4 more treatments to go in this 12 treatment cycle. I am just interested in learning about my other options, if any are available to me."
ID
Pancreatic Cancer PatientAge: 40
"My orthopedist recommended a half replacement of my right knee. I have had both hips replaced. Currently have arthritis in knee, shoulder, and thumb. I want to avoid surgery, and I'm open-minded about trying a trial before using surgery as a last resort."
HZ
Arthritis PatientAge: 78
"I've been struggling with ADHD and anxiety since I was 9 years old. I'm currently 30. I really don't like how numb the medications make me feel. And especially now, that I've lost my grandma and my aunt 8 days apart, my anxiety has been even worse. So I'm trying to find something new."
FF
ADHD PatientAge: 31
Exercise & Supplements for Chronic Kidney Disease
Decatur, Georgia
This trial aims to see if regular cycling exercise, a medication called Kuvan, and common sports supplements can help people with chronic kidney disease improve their exercise ability and manage blood pressure during exercise.
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 2
Key Eligibility Criteria
Disqualifiers:Severe CKD, Drug Abuse, Heart Disease, Others
Must Not Be Taking:Central Alpha Agonists, MAO Inhibitors
150 Participants Needed
Bronchodilators for Chronic Obstructive Pulmonary Disease
Kingston, Ontario
Bronchodilators are medications that open the bronchi to help patients with COPD to breathe better. It is still not known exactly how this effect improves shortness of breath in people with COPD. The goal of this clinical trial is to determine whether bronchodilators lower resistance in the smallest airways in the lungs, and whether this will improve the feeling of breathlessness in these patients.
The main questions the investigators attempt to answer are:
* In patients with COPD, does treatment with a short-acting bronchodilator improve small airway resistance during exercise?
* In patients with COPD, does acute treatment with short-acting bronchodilator improve breathlessness and exercise endurance?
The investigators will compare short-acting bronchodilators to placebo (a substance that contains no drug) to see if the bronchodilator medications improve small airway resistance and breathlessness during exercise.
Participants will:
* Visit the research laboratory 3 visits to complete tests of lung function and exercise
* Complete 2 identical visits (Visit 2 and 3), one in which the participant receives bronchodilator and one in which the participant receives placebo.
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 4
Age:40+
Key Eligibility Criteria
Disqualifiers:Asthma, Pulmonary Hypertension, Congestive Heart Failure, Others
25 Participants Needed
Nebulized Scopolamine for Motion Sickness
Lebanon, New Hampshire
This trial is testing a new way to give anti-motion sickness medicine by spraying it into the nose. It targets people who get motion sickness and aims to provide faster relief by allowing quick absorption through the nasal tissues.
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 1
Age:21 - 49
Key Eligibility Criteria
Disqualifiers:Drug Allergies, Tobacco, Gastrointestinal Disorders, Others
Must Not Be Taking:Intranasal Medications
30 Participants Needed
Cold-Water Immersion for Sports Recovery
Montreal, Quebec
In order to optimize sports performance, high-level athletes are required to manage conflicting training objectives, which often result in periods of high-volume training. These athletes need to perform heavy resistance training sessions to promote physiological adaptations, which consequently induce fatigue. Yet, they need to minimize fatigue to perform subsequent high-quality training sessions often within the same day. To support these training endeavours, a high-quality dietary regimen and adequate protein consumption is deemed to be an essential component of an athlete's recovery plan, as it has been shown to support muscle recovery and reduce muscle inflammation following exercise. Indeed, current sports nutrition recommendations advocate for the consumption of dietary protein and carbohydrate after exercise to promote tissue repair and replenish muscle energy stores (glycogen). Additionally, previous research has shown how water immersion therapies post-exercise may alleviate fatigue and restore performance. However, little is known about how different temperatures, as well as timing of cold-water immersion can support performance recovery in a population of athletes adhering to contemporary post-exercise nutrition recommendations. The objective of this project is to investigate the effects of timing of cold-water immersion relative to exercise on performance recovery within the same day, as well as to investigate whether cold water immersion augments blood amino acid concentrations after exercise and protein intake.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 40
Key Eligibility Criteria
Disqualifiers:Pregnancy, Vegan Diet, GI Diseases, Others
12 Participants Needed
Prebiotics + Probiotics for Stress
Natick, Massachusetts
Emerging evidence supports the existence of a microbiota-gut-brain axis through which gut microbes influence cognition, mood and behavior. Targeting this axis with probiotics and/or prebiotics may provide novel strategies for mitigating stress-induced decrements in gastrointestinal and cognitive function. This double-blind, placebo-controlled, randomized, parallel-arm trial will determine the effects of a prebiotic and a probiotic dietary intervention on gastrointestinal, cognitive and physiologic responses to acute military-relevant physical and cognitive stress. Healthy men and women will be recruited and randomized to receive a placebo, probiotic or prebiotic for 4wk. Volunteers will be fed a controlled diet during the 4th week of supplementation. Fecal, blood, urine and saliva samples will be collected. Physical stress will be induced by a weighted walk on a treadmill, and will be followed by a cognitively challenging testing scenario that uses intermittent electric shocks to the abdomen to induce a stress response.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:17 - 39
Key Eligibility Criteria
Disqualifiers:Pregnancy, Neurological Disorders, Cardiac Disease, GI Tract Disease, Others
Must Not Be Taking:Antibiotics, Antimycotics, Prescription Medications
54 Participants Needed
Simulated Emergency Department Stress for Stress Management
Little Rock, Arkansas
Stress is important for health. As emergency departments (EDs) are often stressful places, a better understanding of the human stress response is important for understanding how and why patients respond as they do when they come to the ED. Since the investigators cannot take up space in the ED for research, the investigators will instead recruit 20 methamphetamine-using participants who are not currently in treatment and 10 healthy adult matched participants to a simulated ED room in the University of Arkansas for Medical Sciences (UAMS) Simulation Center. The investigators will have participants perform a stressor task involving public speaking and a simple arithmetic task. The investigators will see if this experiment can be made to be like being in an actual ED by varying what participants speak about in the task. By doing this, the investigators hope to find out several important things: 1) Is a stressor task feasible and acceptable to participants? 2) What does the stress response -- as measured by cortisol and alpha-amylase -- look like in these participants? 3) Does varying what participants talk about make the experiment seem more like an actual ED? 4) Do participants under stress show even mild symptoms of agitation as measured by clinical scales? If so, how often?
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:21 - 55
Key Eligibility Criteria
Disqualifiers:Cardiovascular, Endocrine, Neurologic, Others
Must Not Be Taking:Daily Medication
30 Participants Needed
Sleep/Wake Schedule for Physiology
Boston, Massachusetts
The study is a combination of outpatient and inpatient monitoring. During the 27-day inpatient portion of the study, the individual's sleep-wake schedule will be varied daily. Volunteers will be randomized to a regular or irregular inpatient schedule.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:18 - 35
Key Eligibility Criteria
Disqualifiers:Pregnant, Recent Shift-work, Others
Must Not Be Taking:Medications
27 Participants Needed
Light Exposure for Sleep and Circadian Rhythms
Boston, Massachusetts
The goal of this clinical trial is to learn how the pupil responds to different light stimuli and how that relates to sleep and daily rhythms in healthy people of different ages.
The main questions it aims to answer are:
* Does the eye's pupil response to light stimuli differ by the sex and age of the participant?
* Is the eye's pupil response to light stimuli related to each participant's sleep timing, their body clock timing, and their hormone responses to light.
Participants will have a special eye exam and complete questionnaires before starting the study to see if they can participate. If they can participate, they will wear a special watch that monitors their activity and light levels for one week. Then they will live in a research room at the Mass General Hospital for 3 days/2 nights during which we will test their pupil response to light, their body clock timing, and their hormone responses to light.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Eye Trauma, Neurologic Disease, Diabetes, Others
Must Not Be Taking:Antidepressants, Beta Blockers, NSAIDs, Others
48 Participants Needed
BEAM Procedure for Obesity
Boston, Massachusetts
This trial is testing a new weight loss procedure called BEAM, which involves making a small cut in the stomach muscle. It aims to help people with obesity who haven't had success with other treatments. The procedure helps slow down food leaving the stomach, making people feel full longer and eat less.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Smoking, Pregnancy, Cardiopulmonary, Others
Must Not Be Taking:Opioids, NSAIDs, Others
20 Participants Needed
Therapeutic Horseback Riding for Autism Spectrum Disorder
Portland, Maine
This randomized control trial (RCT) seeks to assess the mechanisms underlying Therapeutic Horseback Riding's (THR) previously observed significant positive effects on ASD youth, particularly those with co-occurring psychiatric disorders, and to refine information on the durability, dose and sub-population effects of the intervention.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Age:6 - 17
Key Eligibility Criteria
Disqualifiers:Not Listed
250 Participants Needed
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We started Power when my dad was diagnosed with multiple myeloma, and I struggled to help him access the latest immunotherapy. Hopefully Power makes it simpler for you to explore promising new treatments, during what is probably a difficult time.
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Frequently Asked Questions
How much do Physiology clinical trials pay?
Each trial will compensate patients a different amount, but $50-100 for each visit is a fairly common range for Phase 2–4 trials (Phase 1 trials often pay substantially more). Further, most trials will cover the costs of a travel to-and-from the clinic.
How do Physiology clinical trials work?
After a researcher reviews your profile, they may choose to invite you in to a screening appointment, where they'll determine if you meet 100% of the eligibility requirements. If you do, you'll be sorted into one of the treatment groups, and receive your study drug. For some trials, there is a chance you'll receive a placebo. Across Physiology trials 30% of clinical trials have a placebo. Typically, you'll be required to check-in with the clinic every month or so. The average trial length for Physiology is 12 months.
How do I participate in a study as a "healthy volunteer"?
Not all studies recruit healthy volunteers: usually, Phase 1 studies do. Participating as a healthy volunteer means you will go to a research facility several times over a few days or weeks to receive a dose of either the test treatment or a "placebo," which is a harmless substance that helps researchers compare results. You will have routine tests during these visits, and you'll be compensated for your time and travel, with the number of appointments and details varying by study.
What does the "phase" of a clinical trial mean?
The phase of a trial reveals what stage the drug is in to get approval for a specific condition. Phase 1 trials are the trials to collect safety data in humans. Phase 2 trials are those where the drug has some data showing safety in humans, but where further human data is needed on drug effectiveness. Phase 3 trials are in the final step before approval. The drug already has data showing both safety and effectiveness. As a general rule, Phase 3 trials are more promising than Phase 2, and Phase 2 trials are more promising than phase 1.
Do I need to be insured to participate in a Physiology medical study?
Clinical trials are almost always free to participants, and so do not require insurance. The only exception here are trials focused on cancer, because only a small part of the typical treatment plan is actually experimental. For these cancer trials, participants typically need insurance to cover all the non-experimental components.
What are the newest Physiology clinical trials?
Most recently, we added Transcranial Magnetic Stimulation for Healthy Volunteers, Stress Management Program for Stress and Cold-Water Immersion for Sports Recovery to the Power online platform.
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