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BioMed Research International
Volume 2017, Article ID 7120785, 7 pages
Research Article

Time Evolution of Sublingual Microcirculatory Changes in Recreational Marathon Runners

1Department of Intensive Care Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
2Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas, Lithuania
3Department of Drug Technology and Social Pharmacy, Lithuanian University of Health Sciences, Kaunas, Lithuania
4Department of Disaster Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
5Sports Science and Innovation Institute, Lithuanian Sports University, Kaunas, Lithuania

Correspondence should be addressed to Andrius Pranskunas; moc.liamg@sanuksnarp.a

Received 26 February 2017; Revised 28 May 2017; Accepted 12 June 2017; Published 30 July 2017

Academic Editor: Natale Daniele Brunetti

Copyright © 2017 Andrius Pranskunas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We aimed to evaluate changes in sublingual microcirculation induced by a marathon race. Thirteen healthy male controls and 13 male marathon runners volunteered for the study. We performed sublingual microcirculation, using a Cytocam-IDF device (Braedius Medical, Huizen, Netherlands), and systemic hemodynamic measurements four times: 24 hours prior to their participation in the Kaunas Marathon (distance: 41.2 km), directly after finishing the marathon, 24 hours after the marathon, and one week after the marathon. The marathon runners exhibited a higher functional capillary density (FCD) and total vascular density of small vessels at the first visit compared with the controls. Overall, we did not find any changes in sublingual microcirculation of the marathon runners at any of the other visits. However, in a subgroup of marathon runners with a decreased FCD compared to the subgroup with increased FCD, the subgroup with decreased FCD had shorter running time ( versus  min, ), ingested less fluids ( versus  mL, ) during the race, and lost much more weight ( versus  kg, ). Recreational marathon running is not associated with an alteration of sublingual microcirculation. However, faster running and dehydration may be crucial for further impairing microcirculation.