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Giannis Arnaoutis

Assistant Professor

Expert

Giannis Arnaoutis is an expert in the hydration field, with numerous publications in international peer-reviewed journals and book chapters. His research interest is focused on sports nutrition, and more specifically: ergogenic supplements & the elite athlete, hydration status and performance, the relationship between hydration and health and regulation of fluid and electrolyte homeostasis. He delivers invited presentations globally, and he has received the 1st Young Researcher Award in the Hydration for Health Scientific Conference.

Education

  • Post-doctorate Study. Harokopio University, Athens, Greece. Department of Dietetics & Nutrition. Subject: Mechanisms of fluid homeostasis and assessment of hydration indices in adolescent children. 02/2013 – 03/2018.
  • Doctoral Degree in Nutrition & Dietetics. Harokopio University, Athens, Greece. Department of Dietetics & Nutrition. Subject: The effect of hydration status in cardiovascular function and in athletic performance. 10/2007 – 06/2012.
  • Master of Science in Applied Nutrition (Exercise Nutrition). Harokopio University, Athens, Greece. Department of Dietetics & Nutrition. Subject: The effect of sodium consumption in incidence of muscle cramping during endurance exercise. 10/2004 – 09/2006.
  • Bachelor of Science in Sports Sciences. Democritus University of Thrace, Greece. Department of Physical Education & Sports Sciences. 10/1999 - 06/2003.

Research Interests

  • Hydration status, athletic performance and health.
  • The importance of exercise for preventing diseases.
  • Nutrition and sports performance.
  • Nutritional ergogenic supplements and performance of elite athletes.

Publications

  • Adams J.D, Arnaoutis G, Johnson EC, Jansen LT, Bougatsas D, Jimenez C, Mauromoustakos A, Panagiotakos DB, Perrier ET, Guelinckx I, Kavouras SA. Combining urine color and void number to assess hydration. Eur J Clin Nutr. 2021; 75(8): 1262-1266. https://pubmed.ncbi.nlm.nih.gov/33462456/.
  • Arnaoutis G, Tambalis KD, Georgoulis M, Psarra G, Panagiotakos DB, Sidossis LS. Students Living in the Islands are Heavier and have Lower Fitness Levels compared to their Mainland Counterparts; Results from the National Action for Children’s Health (EYZHN) program. Behav Med. 2021; 47(3): 236-245. https://pubmed.ncbi.nlm.nih.gov/32275194/
  • Arnaoutis G, Anastasiou CA, Suh H, Maraki M, Tsekouras Y, Dimitroulis E, Echegaray M, Papamichalopoulou D, Methenitis S, Sidossis LS, Kavouras SA. Exercise-associated Hyponatremia during the Olympus Marathon ultra-endurance trail run. Nutrients. 2020; 12(4): 997. https://pubmed.ncbi.nlm.nih.gov/32260197/
  • Arnaoutis G, Verginadis P, Seal AD, Vogiatzis I, Sidossis LS, Kavouras SA. Progressive Dehydration in Junior Laser Class Sailors During World Championship. Int J Sport Nutr Exerc Metab. 2018; 28(1): 75-81. https://pubmed.ncbi.nlm.nih.gov/29035599/
  • Arnaoutis G, Kavouras SA, Stratakis N, Likka M, Mitrakou A, Papamichael C, Sidossis LS, Stamatelopoulos K. The effect of hypohydration on endothelial function in young healthy adults. Eur J Nutr. 2017; 56(3): 1211-1217. https://pubmed.ncbi.nlm.nih.gov/26864199/
  • Arnaoutis G, Kavouras SA, Angelopoulou A, Skoulariki C, Bismpikou S, Mourtakos S, Sidossis LS. Fluid balance during training in elite young athletes of different sports. J Strength Cond Res. 2014; 29(12): 3447-52. https://pubmed.ncbi.nlm.nih.gov/24513625/
  • Arnaoutis G, Christaki I, Kavouras SA, Sidossis LS. Water ingestion improves performance better than mouth-rinse, in dehydrated subjects. Med. Sci. Sports Exerc. 2012; 44(1): 175-9. https://pubmed.ncbi.nlm.nih.gov/21685819/