6% Female Performance Research Laboratories
Did you know that only 6% of sports medicine and exercise science research is conducted on exclusively females? Our team of researchers is committed to advancing the knowledge base available for female athletes, their coaches, and practitioners.
Help us grow the 6%!
Our Active Studies
email: mbaranau@uccs.edu to learn more or sign up to participate.
Effects of Physical and Psychosocial Stress on Functional Hypothalamic Amenorrhea in Exercising Women (FHA study)
  • Funding provided by the UCCS Committee on Research and Creative Works (CRCW)
Become Involved
Timing of Energy Availability on Menstrual Cycle Function (FAST study)
  • Funding provided by the Boettcher Foundation's Webb-Waring Biomedical Research Program
Impact of Moderate Aerobic Physical Activity vs. Hormonal Contraceptive Use on Menstrual Cycle Symptoms
Areas of Research
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Effects of the Ovarian Hormones on Exercise Performance
Understanding how fluctuations in ovarian hormones for premenopausal women taking and not taking hormonal contraceptives, perimenopausal, or postmenopausal women impact physiology.
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Effects of Exercise Stress on Menstrual Cycle Health
Understanding how certain factors unique to exercise training programs influence menstrual cycle function and the risk of anovulation, luteal phase defects, or amenorrhea.
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Considering Lifestyle Behaviors that may Impact Menstrual Cycle Health
Understanding how certain lifestyle factors such as increased perceived stress influence menstrual cycle function.
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Optimization of Training Programs for Female Exercisers
Understanding how factors unique to female exercisers such as menstrual related symptoms or heavy menstrual bleeding may impact exercise performance and recovery.
Our research team specializes in addressing the unique physiological challenges of female exercisers with particular emphasis on hormonal influences, behavioral factors, and nutritional requirements.
Our Team
Marissa Baranauskas, PhD
Marissa is the primary investigator at 6% Performance Labs. She is an Assistant Professor in the Human Physiology and Nutrition Department at the University of Colorado Colorado Springs (UCCS). Marissa completed her PhD in Human Performance at Indiana University in Dr. Robert Chapman's lab studying the effects of high altitude on endurance performance and her postdoctoral fellowship with Dr. Stephen Carter at Indiana University, studying exercise and nutrition interventions to address disparities in the cardiovascular health of postmenopausal women.
As a former - and frequently injured -Division I cross country and track athlete, the main purpose of her research is to improve the knowledge base available for coaches, practitioners, and athletes working with female athletes. She is an avid mountain and trail runner and lives in Colorado Springs, CO.
Isabelle Page, MSPH, RDN
Isabelle is a registered dietitian, specializing in performance nutrition as well as disordered eating. She received her bachelor’s degree in Nutrition, Dietetics and Food Science from the University of Vermont and defended an undergraduate Honors thesis studying athletes and food behavior. She went on to receive her Master of Science in Public Health from the Johns Hopkins Bloomberg School of Public Health, and completed her dietetic internship at the Johns Hopkins Hospital where she then became the dietitian for the Women’s Sports Medicine Program. 
She is now working as a consultant and outpatient dietitian, and in her free time can be found training for triathlons, attempting to improve her yoga skillset, or testing out new recipes. 
Bethany Kelsey, MS, Clinical Research Coordinator
Bethany is the Clinical Research Coordinator for the Human Physiology & Performance Department at the University of Colorado Colorado Springs (UCCS).  Her undergraduate work in exercise science was done at the University of Northwestern in St. Paul, MN, and her graduate work in health promotion was completed at the University of Connecticut in Storrs, CT.  She has supported multiple studies investigating exercise interventions and has also worked in clinical exercise settings.  
Bethany frequently pushes the boundaries of her own fitness hiking mountains above 13,000' and loves trying new quick bread recipes.   
Diana Mercier
Diana is a graduate student in the UCCS Applied Physiology MSc program. Her thesis is investigating the effects of fasted exercise with controlled energy availability on menstrual cycle function.
Alumni
  • Katie Rainsberger, MSc - doctoral student at the Technical University of Munich (TUM) 2025, thesis: Agreement between Lactate Threshold and Critical Speed in Trained and World Class Runners
  • Rachel Dowd, MSc - doctoral student at University of Northern Colorado 2025, thesis: The Influence of Menstrual Cycle Phase on Airway Function and Respiratory Muscle Oxygen Consumption
UCCS Undergraduate & Graduate Research Assistants
  • Andrea Rodriguez-Soto
  • Dylan Davis
  • Michael Burke
  • Brooke Peterson
  • Aurore Jouvert
  • Joshua Stein
  • Cate Urbani
  • Leah Bisgrove
Additional Resources
Research Insights
Access our lab group's comprehensive list of peer-reviewed publications and conference abstracts at Research Gate.
Recent Research
Menstrual Cycle Tracking App
FITR Woman is a free menstrual cycle tracking app designed by Dr. Georgie Bruinvels, a leading scientist in female sports performance and menstrual cycle health. Educational resources on the app are backed by peer-reviewed research and help provide insight on the unique symptoms, exercise, and nutritional needs in each phase of the menstrual cycle for female athletes.
Mira Fertility Tracking
Mira is a research backed fertility monitoring device that provides real-time measures of urinary estrogen, progesterone and luteinizing hormone values. Please feel free to use this link for a 15% discount on Mira supplies 2MBAR15. Note, we do not receive any commission from Mira - this is a code supplied to educators/ clinicians.
Colorado marathoner and UESCA certified run coach Char Griess Instagram (@charathoner)
Social Media
Follow us on Social Media to receive weekly updates on current research relevant to female athletes.
Contact Us
Research and Industry Collaboration Inquiries
Please reach out to us via email to discuss potential opportunities for collaboration.
Located at the William J. Hybl Sports Medicine and Performance Center 4925 N Nevada Ave, Colorado Springs, Colorado, 80918.