Professor and Director of the Human Performance Laboratory
Ph.D., Human Bioenergetics, Ball State University, Human Performance Laboratory, 1983
M.Ed., Science Curriculum, University of Toledo, 1976
B.Ed., Science Curriculum (Biology), University of Toledo, 1971
Areas of Expertise:
Exercise & Heat
Physiology – Environmental
Exercise & Nutrition
Exertional Heat Illnesses
Presently in his 28th year as a professor in the Human Performance Laboratory. Research specialties include human fluid-electrolyte balance and assessment of hydration status; physiological responses to exercise; dietary intervention (i.e., sport drinks, low salt diets, glucose-electrolyte solutions); heat tolerance; effects of dehydration on physical performance; effects of mild dehydration on mood and cognitive performance; physiological responses to wearing uniforms; pharmacologic influences on thermoregulation and heat acclimatization as they apply to athletes, fire fighters, and military personnel.
Field studies: fluid-electrolyte balance in tennis players (Miami, FL), effects of flavoring on fluid consumption (Fort Benning, GA), heat exhaustion (Panama), heat stress monitors (Australia), heat illness (Texas), casualty rates at the Boston Marathon (Massachusetts), cooling of heatstroke patients after a summer road race (Falmouth, MA), effects of diuretic-induced dehydration on sprint running performance (Storrs, CT), observation of fluid-electrolyte and caloric turnover of cyclists during a 100-mile event in a 105F environment (Wichita Falls, TX), effects of dehydration on trail running performance (Storrs, CT), evaluation of sweat and sodium losses of elite male and female triathletes (E. Rutherford, NJ), evaluation of Ironman Triathletes at the finish line (Kona Hawaii, October 2012).
Personal Interests: (1) Effects of mild dehydration on cognitive performance and mood. (2) Changes of fluid balance and hydration biomarkers during pregnancy and lactation. (3) Effects of controlled dietary caffeine intake on fluid balance and physical performance in a hot environment. (4) Influence of fluid-electrolyte replacement beverages on prolonged exercise performance in a hot environment. (5) Novel indices of human hydration. (6) Thermoregulatory and physiological strain due to athletic uniforms. (7) Effects of modified drinking on human physiology and mood.
Holds joint appointments in the Department of Nutritional Sciences and in Physiology & Neurobiology.
Fellow, American College of Sports Medicine.
Editorial Board Member for the following journals: International Journal of Sports Nutrition & Exercise Metabolism, Journal of Strength & Conditioning Research (NSCA), Journal of Athletic Training (NATA).
Effects of fluid composition on cycling performace in a warm environment
Thermoregulatory and physiological strain due to athletic uniforms.
Effects of controlled dietary caffeine intake on fluid-electrolyte balance, hydration, physiological & psychological measures during exercise-heat stress, and caffeine-withdrawal
Comparison of a fluid-electrolyte replacement beverage versus water: ergogenic properties
Assessing human hydration status
Effects of glycerol rehydration during exercise in the heat
Effects of a strong antioxidant on maximal aerobic power
NIH Minority Student Bridges Grant involving Howard University, Washington D.C. and University of Rhode Island
Effects of mild dehydration on cognitive function and mood state
Hydration biomarkers in pregnant women
Armstrong LE, Lee EC, Casa D, Johnson EC, Ganio MS, McDermott B, Vingren J, Oh HM, Williamson KH. Exertional Hyponatremia and Serum Sodium Change During Ultraendurance Cycling. International Journal of Sports Nutrition & Exercise Metabolism 27(2):139-147, 2017.
McKenzie AL, Munoz CX, Ellis LA, Perrier E, Guelinckx I, Klein A, Kavouras SA, Armstrong LE. Urine Color as an indicator of Urine Concentration in Pregnant and Lactating Women. European Journal of Nutrition, 2015. Peer reviewed, online open access. doi:10.1007/s00394-015-1085-9
Armstrong LE, Johnson EC, Ganio MS, Judelson DA, Vingren JL, Kupchak BR, Kunces LJ, Muñoz CX, McKenzie AL, Williamson KH. Effective body water and body mass changes during summer ultra-endurance road cycling. Journal of Sports Sciences 33(2):125-35, 2015.
Armstrong LE, Ganio MS, Casa DJ, Lee EC, McDermott BP, Klau JF, Jimenez L, Le Bellego L, Chevillotte E,. Lieberman HR. Mild dehydration affects mood in healthy young women. Journal of Nutrition 142(2):382-388, 2012.
Armstrong LE, Klau JF, Ganio MS, McDermott BP, Yeargin SW, Lee EC, Maresh CM. Accumulation of 2H2O in plasma and eccrine sweat during exercise-heat stress. European Journal of Applied Physiology & Occupational Physiology 108:477-482, 2010.
Armstrong LE, Johnson EC, Casa DJ, Ganio MS, McDermott B, Yamamoto LM, Lopez RM, Emmanuel H. The American Football Uniform: Uncompensable Heat Stress and Hyperthermic Exhaustion. Journal of Athletic Training 45(2):117-127, 2010.
Lifesaving Education Award, Korey Stringer Institute, 2016
Texas A&M University, Department of Kinesiology, Scholar Award. Distinguished Lecture Series, College Station, TX. March, 2016.
Outstanding Research Award, Neag School of Education, May 2005
Honor Award for Exemplary Service to the N E Chapter of American College of Sports Medicine, Boxborough MA, November 1996.
Received Department of the Army Achievement Medal for Civilian Service, Heat Research Division, US Army Research Institute of Environmental Medicine, Natick, MA, June 1990.
Received National Strength and Conditioning Association’s Presidential Award twice. Second award, May 1993. First award, May 1989.
Aerospace Medical Association, Environmental Science Award, Nashville, TN, April 1986.
Scientific Advisory Board Member, Danone Research, France. 2008-present
In the News:
NPR Web interview: How much water do you need?