uHoWL Research Study
Primary Objective
This research hopes to learn more about the relationships between reproductive hormones, metabolic health, and energy restriction. Secondly, we hope to learn how reproductive hormones influence weight and elements of metabolism.
![](https://researchstudies.cuanschutz.edu/Content/images/study-category-images/women-1.jpg)
Description
Are you interested in a research study on women's reproductive hormones? We are conducting a study among women aged 18-40 who have regular menstrual cycles, are not using hormonal birth control, and have a body mass index between 27-45.
Main Procedures Involved: How to participate in this study: If you think you might be interested in participating in this study, please complete this questionnaire: https://redcap..
ucdenver.edu/surveys/?s=8L7LN9KMXL3YYHXP.
Location: This study takes place at the University of Colorado - Anschutz Medical Campus and your home
Procedures Included:
• You will have a study visit to see if you are eligible for the study including a fasted blood draw.
• If you are found to be eligible, you will be asked to complete questionnaires online and come in for 3 study visits:
o Baseline (~1 hour): Includes a blood draw and assessment of body composition, weight, and body measurements
o Mid-study (after 2 months, ~15 minutes), weight
o Follow-up (after about 4 months, ~30 minutes), body composition and weight
• Following each of these study visits you will wear a device that tracks your physical activity and keep a written record of your physical activity and eating over 7 days.
• You will collect urine samples each morning over 4 consecutive menstrual cycles (~28 days/cycle), store them in your freezer, and bring them back to us at 2 timepoints.
• You will track how long each of your cycles last.
Duration of Participation: 4 to 5 months
Details
18 to 40 years
Women ages 18-40, BMI 27-45 kg/m2 Have regular menstrual cycles Not using hormonal birth control Willing to maintain weight, physical activity, and dietary habits during study participation
380
Locations
Anschutz Health and Wellness
Outpatient CTRC
Principal Investigator
![Photograph of Ann Caldwell](https://researchstudies.cuanschutz.edu/Content/images/investigators/17343-prininv.jpg)
Ann Caldwell
Resources
Study ID
Protocol Number: 21-3957
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