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Solid foods and infant growth
Your baby may be eligible if they are: - Exclusively breastfed - Younger than six months of age - Full term (> 37-weeks’ gestation) - Have not yet been introduced to solid foods This is a 7-month long study, with visits occurring once every month. The first visit, 9-month visit, an... Protocol #: 19-0546 |
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Novel Evaluations of Aging and Gender-Affirming Hormone Therapy on Vascular Endothelial Function and Metabolic Profiles in Transgender Women Compared to Age Group-Matched Cisgender Adults
Do you qualify? • Transgender women (i.e., assigned male at birth but identify as female) taking estradiol and spironolactone o Ages 18 to 40 or 50 to 75 years o In good general health o Have been on hormones for at least 1 year o No history of gonadectomy o... Protocol #: 18-2258 |
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Novel Evaluations of Aging and Gender-Affirming Hormone Therapy on Vascular Endothelial Function and Metabolic Profiles in Transgender Men Compared to Age Group-Matched Transgender Women and Cisgender Adults
Transgender men (i.e., assigned female at birth but identify as male) taking testosterone o Ages 18 to 40 or 50 to 75 years o In good general health o Have been on hormones for at least 1 year o No history of gonadectomy o No history of cancer, diabetes or heart d... Protocol #: 19-2323 |
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Evaluation of Intestinal Permeability and Chronic Inflammation in Patients with Type 2 Diabetes and Obesity Compared to Healthy Lean Controls (IDOS)
Participants will complete 2-3 visits- a screening visit and a testing visit. Some participants will be asked to split screening into 2 visits. All visits include blood draws and the testing visit includes blood draws and frequent urine samples. Participants will also be asked to provide a... Protocol #: 20-2179 |
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Effects of complementary feeding on infant growth and gut health
Your baby may be eligible if they are: - Breastfed and/or formula fed - Younger than five months of age - Full term (> 37-weeks’ gestation) - Have not yet been introduced to solid foods This is a seven month-long study, from 5 to 12 months of age, with visits occurring every month. ... Protocol #: 20-2232 |
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The impact of estrogen status on the biological function of brown adipose tissue in women measured using quantitative PET/CT
The physiological relevance of brown adipose tissue in humans is largely unknown. We have shown that suppressing ovarian function in premenopausal women reduces resting energy expenditure (REE), and this is prevented by adding back estradiol (E2). Our preliminary data suggest that this may... Protocol #: 16-1479 |
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Blueberry intake and infant gut health
Your breastfed baby may be eligible if they are: - Younger than six months of age - Exclusively breastfed - Full term (> 37-weeks’ gestation) - Have not yet been introduced to solid foods This is a 7-month long study, with visits occurring once every other month. The first and last ... Protocol #: 20-1659 |
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Early iron exposure on the gut microbiota in young infants
This is a four month-long study, beginning at birth. The first study visit is conducted at the University of Colorado Hospital and the last visit takes place at Children’s Hospital Colorado. The other four visits are conducted in your home. Formula is provided to all study participants for... Protocol #: 18-1317 |
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Colorado Pulmonary Alcohol Research Consortium
We are looking for volunteers to serve as control subjects to be compared to people who drink heavily in a research project that examines substances collected from inside the lungs.... Protocol #: 12-0181 Location: CTRC-adult, University of Colorado Hospital |
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REACH - Role of microvascular insulin resistance and cardiorespiratory fitness in diabetes
Participants will undergo baseline testing of heart and blood vessel function as well as skeletal muscle function and exercise ability. Participants will then do cardiovascular exercise for 15 weeks, and all testing will be repeated.... Protocol #: 20-2723 |
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Research about the Potential for the Contraceptive Implant as Emergency Contraception
Are you a healthy female between the ages of 18-40? Are you interested in starting Nexplanon®, hormonal birth control that goes in your arm? Are you interested in how your body works, specifically in regard to ovulation? This study is determining if when placing an etonogestrel implant ... Protocol #: 21-5026 |
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Prolonged Sedentary Behavior in Older Women with and without Type 2 Diabetes: Knowledge, Engagement, and Relationship to Cardiometabolic Risk
Are you interested in participating in a research study to understand the health effects of the time we spend sitting? The ACTIVE Research Lab is looking for: • Women • 60 to 75 years of age • Non-smoker • If Type 2 Diabetes, not being treated with insulin • BMI 25-40 kg/m2 (check ... Protocol #: 19-2758 |
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NightWare Therapeutic Platform for improving Cardiovascular Health in Adults With Nightmares Associated with PTSD
We are recruiting individuals who experience PTSD-associated nightmares to participate in a research study to help us understand if improving sleep quality, by reducing the impact of nightmares can improve cardiovascular health.... Protocol #: 21-5027 |
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Skeletal Response to Simulated Night Shift (SPOTLIGHT Study)
What is involved: • Measurements of bone mineral density • Completion of sleep questionnaires/assessments • Randomization to sleep with a simulated night shift schedule or normal sleep schedule • A general physical exam • Activity monitoring with a wrist monitor • Blood/urine collec... Protocol #: 20-3013 |
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Social Information Processing in Teens (SIP Study)
Interested in how irritability affects social information processing in teens? Our goal is to learn more about how people commonly react to social ambiguity and how irritable mood may relate to negative interpretations of social signals in adolescence.... Protocol #: 20-2633 |
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Molecular Transducers of Physical Activity Consortium (MoTrPAC) - Adult
The purpose of MoTrPAC is to learn about how exercise benefits health. We know that being physically active is good for our health, but we don’t completely understand how it changes the cells in our bodies. Understanding the cellular benefits of exercise could help scientists develop new... Protocol #: 18-0220 |
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The short-chain fatty acid acetate for improving age-associated arterial dysfunction
Specific Aim: To determine the following before and after 12 weeks of oral supplementation with calcium acetate vs. placebo (calcium citrate) in healthy men and women 50+ years of age: a) Endothelium-dependent dilation, assessed as brachial artery flow-mediated dilation (FMDBA) [primary o... Protocol #: 22-0473 |
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Effect of Hormones on Frequency of Headache and Brain Structure and Function in Puberty
This research studies how hormones impact headache and how different parts of the brain talk to each other. You are invited to participate if you are (or your child is): • 11 years to 20 years of age • With or without history of headache • Male sex, male gender identity • Healt... Protocol #: 20-1824 |
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Pfizer UAD
This study plans to learn more about what is in the urine of children with and without an illness in their lung like a cold. The investigators will look to see if there are bacteria (type of germ) in the urine as well as wanting to make sure that the bacteria in the urine only exists in ch... Protocol #: 20-2797 Location: Childrens Hospital Colorado |
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Real-Time Assessment of Lung Structure and Function in Children and Young Adults with CF using Electrical Impedance Tomography
Single visit to Children's Hospital Colorado - During this visit your height, weight, date of birth, and gender will be recorded. You will also have some tests done including pulmonary function testing (spirometry), EIT, and multiple breath washout (MBW).... Protocol #: 22-0114 Location: Childrens Hospital Colorado |
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The Physical, Mental, and Emotional Effects of Youth Girls Flag Football: A Prospective Investigation
Participants will complete three in person visits (1) mid-August 2023 (2) mid/late October 2023 (3) April 2024. They will complete 20 minutes of questionnaires and 20 minutes of functional tests at each visit and receive $50 for each visit completed. Participants will also complete weekly ... Protocol #: 23-1018 Location: Childrens Hospital Colorado |
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Evaluation of the feasibility, acceptability, and effectiveness of TelePrEP for at-risk youth in Colorado
This study aims to assess whether PrEP delivery via a telehealth (termed TelePrEP throughout) approach supports persistence and retention on oral PrEP for young people and identify barriers and facilitators of TelePrEP for youth. The proposed research will address the critical need to iden... Protocol #: 22-0588 Location: Childrens Hospital Colorado |
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EA1151: Tomosynthesis Mammographic Imaging Screening Trial (TMIST)
Participants in this trial will be randomized to receive either 2D or 3D mammograms for the first 5 years of the research study, either ever year or every other year depending on personal risk factors. Information will be collected on breast cancer status for 8 years in total. ... Protocol #: 18-0392 Location: Highlands Ranch Hospital, Outpatient CTRC, University of Colorado Hospital |
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Defining Molecular Phenotypes of Exacerbation-Prone Asthmatics (ENIGMA)
We want to learn more about asthma and how stuff in the air, like pollution and allergens, can make asthma worse in children. To do this we want to look at kids with and without asthma. If you join the study, you will participate in a remote consent visit, a clinic visit and a remote home... Protocol #: 17-1416 Location: Childrens Hospital Colorado |
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Bioenergetic and Metabolic Consequences of the Loss of Gonadal Function- 2018
This research study is investigating the roles of estrogen (female sex hormone) and FSH, or follicle-stimulating hormone, on cortisol (a stress hormone), fat gain, and disease risk.... Protocol #: 18-2483 Location: Outpatient CTRC, Outpatient CTRC, University of Colorado Hospital |
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Multiomics Investigation of Marijuana Use
This research study seeks to learn more about biomarkers and biological pathways associated with marijuana use. We are enrolling adults who are marijuana users or non-users. The study involves filling out online surveys and one on-campus visit to give a blood, urine, and hair sample. If yo... Protocol #: 18-0853 Location: Outpatient CTRC, Outpatient CTRC, University of Colorado Hospital |
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Sex-based differences in the neuronal mechanisms of food intake behavior
Participants will: -Complete 2 to 4 MRI scans -Complete food, attention, and mood questionnaires -Complete blood draws for measuring hormones -Receive a free Fitbit... Protocol #: 19-1148 Location: Outpatient CTRC, Outpatient CTRC, University of Colorado Hospital |
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Effects of puberty and pubertal suppression on insulin sensitivity, metabolic rate and vascular health
This study will involve 4-5 in person visits. There will be screening visit for some patients and then a baseline visit over two days. The first day will involve an IV and drinking a sugary drink with blood draws as well as measuring the resting metabolic rate and answering questionnaires.... Protocol #: 19-2109 Location: Childrens Hospital Colorado, Outpatient CTRC, Outpatient CTRC, University of Colorado Hospital |
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Pubertal Blockade and Estradiol Effects on Cardiometabolic Health for Transitioning Youth (PUBERTY)
This study will involve 6 research visits at 3 timepoints for transgender individuals (before starting estrogen and 6 and 12 months after starting estrogen). No medications are given as a part of this study. Cisgender (non-transgender) participants will have 4 visits at two timepoints ... Protocol #: 19-1226 Location: Childrens Hospital Colorado, University of Colorado Hospital |
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Using Oscillometry in Toddler Aerodigestive Patients to Monitor Lung Function Response to Treatment
In this study, we will 1. Assess different mouthpiece options to help make the test easier to do in young children 2. Obtain AOS measurements in children who are patients in the aerodigestive clinic at Children's Hospital Colorado 3. Compare these measurements to those obtained in chil... Protocol #: 21-2637 Location: Childrens Hospital Colorado |
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Harnessing Cells from Human Milk; Linking Lactation to Metabolism
In this study: - Participants will complete 2 study visits (in late pregnancy & 2 wks postpartum) - Participants will have their milk production measured and provide blood and breastmilk samples If you join the study, you will be part of the study for up to a month and a half, lasting... Protocol #: 21-2835 Location: CTRC Inpatient, Outpatient CTRC, Outpatient CTRC, University of Colorado Hospital |
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Understanding How Sleep Health Affects Recovery from Adolescent Concussion
We will conduct a prospective cohort study, with two groups (concussed and control). They will undergo an initial assessment (within 14 days of concussion) and a follow up ~28 days post-concussion. Controls will follow a similar timeline. During the ~two-week period between Visits 1 & 2, p... Protocol #: 22-0316 Location: Boulder Health Center, Childrens Hospital Colorado |
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Autonomic and Renal Contributions to Hypertension with Androgen Deprivation Therapy
We are recruiting individuals with or without prostate cancer to participate in a research study to help us understand how androgen deprivation therapy affects cardiovascular health. Men with prostate cancer will be studied at the start and after 2 months of androgen deprivation therapy. H... Protocol #: 22-2201 Location: Outpatient CTRC |
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Acute Equol Supplementation and Vascular Function in Postmenopausal Women with and without CKD
-One screening visit (1.5 hours) and two testing visits (each 5 hours) -Testing visits will include a blood draw and non-invasive testing of blood vessel function -All visits will take place at CU Anschutz As a volunteer, you will receive the following information about your health: ... Protocol #: 23-0070 Location: Renal Research Center, University of Colorado Hospital |