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Le sauna à infrarouges a des effets semblables à l’exercice physique modéré sur la fonction endothéliale et l’hydratation

par Amand, Marc;Charrier, Caroline C. C.;Balestra, Costantino
Référence Science et Motricité
Publication Publié, 2012-06-30

Article révisé par les pairs

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Résumé :

Abstract. The infrared sauna has effects similar to moderate physical exercise on endothelialfunction and hydration.Introduction: The infrared sauna (FIRS) shows variations comparable to moderate physical activity.Endothelial function and hydration have been observed. Methods: Healthy young participants(n = 27) were staying during 30 min in a cabin of FIRS at 60◦C. Results: At the exit, body mass,extracellular volume and plasma volume were decreased. Flow mediated dilation (FMD), heart rate,intracellular compartment volume, hematocrit and changes in plasma volume were increased. After30 min, these measures returned to their baseline values, except FMD (p > 0.0001). This increaseremained after 60 min (p < 0.001). Discussion: The improvement of FMD depends mainly on theresidual nitrogen monoxide. Excessive dehydration of the extracellular compartment results in compensationof water from other compartments according to osmotic pressure gradients. As during anexercise session, splenic contraction could explain some findings. In the long term, various temperaturecontrol processes can be modified to maintain brain perfusion sustainable. Conclusion: Onesession of FIRS induces cardiovascular effects similar to those of moderate physical activity. Themineral balance eliminates the risk of dehydration. The FIRS could overcome the lack of exercisewhen mobility is temporarily reduced.Key words: FMD, intracellular and extracellular compartments, cardiovascular, plasma,hemoglobin, hematocrit