The Exercise Endocrinology Laboratory offers laboratory and clinical experiences to students interested in the interactions of exercise and nutrition and on the effects of exercise on energy regulation and hormone secretion in humans. Experiences are driven by basic questions, but the work involves working with human subjects and dealing with the applications of theory to practice. Experiences can include interactions with study subjects, assessment of their dietary intake, aerobic fitness, and energy expenditure, entry of data into databases, working with blood samples and doing metabolite and hormone assays. Dr. Katarina Borer studies effects of acute exercise on hormones and metabolism. She also has studied the effects of endurance exercise training on animal growth and human growth hormone secretion, as well as on energy regulation and fat loss. She investigates the effects of exercise on body mass and energy regulation through studies of the roles of nutrition and hormones in these phenomena. In her earlier studies, Borer used golden hamsters because they voluntarily run marathon distances each night. In her present studies, she studies post-menopausal women because they are at risk of developing obesity, diabetes, and coronary heart disease, and have low levels of growth hormone. Her training studies have explored whether exercise in the form of walking when carried out at different intensities can affect insulin sensitivity (and risk of developing diabetes), growth hormone secretion (and maintenance of lean body mass and control of abdominal fat), body fat level and regional distribution, and several risk factors for developing coronary heart disease (hypertension and blood clotting factors).