Randall Gretebeck, Ph.D., RD

Randall Gretebeck
Randall Gretebeck, Ph.D., RDMarquette University

Clark Hall, 354

MilwaukeeWI53201United States of America

Associate Professor

Highest Degree and Institution

Ph.D., University of Wisconsin

Courses Taught

HEAL 2045:

Research Interests

Dr. Gretebeck’s program of research focuses on the study of energy and macronutrient metabolism. His background in both nutrition and exercise physiology has resulted in a research trajectory that encompasses the measurement of metabolic responses to manipulations in both diet and exercise.  He has expertise in the assessment of energy intake and expenditure and is currently developing a novel approach using heart rate variability to assess metabolic flexibility as a screening tool for insulin resistance.  Dr. Gretebeck has recently completed a diet and exercise study investigating the role of exercise and a low carbohydrate diet on insulin resistance and prediabetes in individuals at risk for the development of Alzheimer’s disease.

Professional Affiliations

American College of Sports Medicine


Fellow, American College of Sports Medicine


Link to Marquette University E-Publications - R. J. Gretebeck


Gretebeck R.J., Principal investigator. “Beneficial Bites for a Healthy Life” Hellen Bader Foundation, Baron County Aging and Disability Resource Center, Wisconsin Bureau of Aging and Disability Resources, and Greater Wisconsin Agency on Aging Resources, 2016-2018.

Gretebeck R.J., Co-Principal investigator. “Diet and Exercise Trial to Improve Insulin Resistance, Increase Cerebral Blood Flow, Alter Metabolomic Biomarkers, and Decrease Alzheimer’s Disease Risk”. National Institutes of Health, R21AG053738, 2016-2019.

Emory T. Clark Hall, home of Marquette University's College of Nursing

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