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Medicina dello Sport 2021 September;74(3):420-34

DOI: 10.23736/S0025-7826.21.04014-X

Copyright © 2021 EDIZIONI MINERVA MEDICA

language: English, Italian

Relation between sauna-induced dehydration and physiological and thermal parameters in young volunteers: preliminary data

Michela BOSSA 1, Nerio A. MONTOYA GIRALDO 2, Leonardo PELLICCIARI 3, Christian FALCONI 2, Calogero FOTI 1

1 Physical and Rehabilitation Medicine Unit, Clinical Sciences and Translational Medicine, Tor Vergata University, Rome, Italy; 2 Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy; 3 IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy


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BACKGROUND: Despite both the crucial importance of hydration and recent advances on wearable electronics, no portable systems for monitoring the hydration status are available, mainly due to insufficient insight into the complex relations between hydration and physiological parameters. Therefore, we investigated the effect of controlled dehydration and hydration on several key physiological parameters.
METHODS: Twelve healthy volunteers (53% males, aged 30.4±1.3 years) were included in this study; their weight, oxygen saturation, heart rate, systolic and diastolic pressure, axillary temperature taken with medical devices and multiple temperatures taken with a thermal camera were collected at baseline, after dehydration in Finnish sauna followed by 10 minutes-acclimatization, and 30 minutes after controlled oral rehydration (750 cc of water) without urinating.
RESULTS: In particular, these measurements showed significant differences in most of the examined physiological parameters between the three assessment times, and findings of particular interest regarding the thermal parameters.
CONCLUSIONS: These results provide insight both on the relations between hydration and physiological parameters and for designing portable systems for monitoring hydration.


KEY WORDS: Dehydration; Organism hydration status; Steam bath

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