About Lawrence E. Armstrong

Lawrence E. Armstrong, Ph.D., FACSM is serving in his 26th year as Professor, Human Performance Laboratory, Department of Kinesiology, University of Connecticut, with joint appointments in the Departments of Nutritional Sciences and Physiology & Neurobiology. He has authored/coauthored over 200 peer-reviewed scientific publications; authored the book Performing in Extreme Environments (Human Kinetics, 2000); and edited the books Exertional Heat Illnesses (Human Kinetics, 2003) and ACSM’s Research Methods (LWW, 2015; WJ Kraemer Co-Editor). 

His research interests include hydration assessment; effects of dehydration on cognitive and physical performance; exercise-heat stress; body temperature regulation, and the effects of nutritional supplements on exercise performance.  Dr. Armstrong previously was President of the New England Chapter of ACSM (1990-1991) and presently serves as the President, American College of Sports Medicine.


Description of Dr. Armstrong's Talk:

The human body does not produce adequate metabolic water (250-350 ml/24h) to offset fluid losses from the kidneys, lungs, and skin; thirst is not sensed until water loss reaches 1–2% of body mass; and solid food provides only approximately 20% of daily total fluid intake.  These factors (plus large inter-personal differences of volitional drinking behavior, body size, and dietary intake) explain why the daily water requirement varies from person to person.  Further, neuroendocrine regulation of body water is complex and dynamic.  Despite the advanced technological capabilities which science employs today, neither a universal daily water requirement nor a universal hydration assessment method (i.e., biomarker or index) have been defined precisely, for any demographic group.  This presentation will (a) describe the daily water consumption recommendations of international scientific/health organizations; (b) present numerous potential hydration assessment techniques; and (c) suggest non-technical, inexpensive hydration indices that may be used during daily activities.