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    • Oxidative Stress Response Kinetics after 60 Minutes at Different Levels (10% or 15%) of Normobaric Hypoxia ExposurePeer reviewedOpen access 

      15 juin 2023, Leveque, Clément; Mrakic-Sposta, Simona; THEUNISSEN, Sigrid; Germonpré, Peter; LAMBRECHTS, Kate; Vezzoli, Alessandra; Gussoni, Maristella; Levenez, Morgan; Lafère, Pierre; Guerrero, François; BALESTRA, Costantino, HE Bruxelles Brabant
      Article scientifique
      In this study, the metabolic responses of hypoxic breathing for 1 h to inspired fractions of 10% and 15% oxygen were investigated. To this end, 14 healthy nonsmoking subjects (6 females and 8 males, age: 32.2 ± 13.3 years old (mean ± SD), height: 169.1 ± 9.9 cm, and weight: 61.6 ± 16.2 kg) volunteered for the study. Blood samples were taken before, and at 30 min, 2 h, 8 h, 24 h, and 48 h after a 1 ...

    • Oxidative Stress Response’s Kinetics after 60 Minutes at Different (30% or 100%) Normobaric Hyperoxia ExposuresPeer reviewedOpen access 

      30 décembre 2022, Leveque, Clément; Mrakic-Sposta, Simona; Lafère, Pierre; Vezzoli, Alessandra; Germonpré, Peter; Beer, Alexandre; Mievis, Stéphane; Virgili, Fabio; LAMBRECHTS, Kate; THEUNISSEN, Sigrid; Guerrero, François; BALESTRA, Costantino, HE Bruxelles Brabant
      Article scientifique
      Oxygen is a powerful trigger for cellular reactions and is used in many pathologies, including oxidative stress. However, the effects of oxygen over time and at different partial pressures remain poorly understood. In this study, the metabolic responses of normobaric oxygen intake for 1 h to mild (30%) and high (100%) inspired fractions were investigated. Fourteen healthy nonsmoking subjects (7 ...

    • Physiology of repeated mixed gas 100-m wreck dives using a closed-circuit rebreather: a field bubble studyPeer reviewedOpen access 

      28 novembre 2021, BALESTRA, Costantino; Guerrero, François; THEUNISSEN, Sigrid; GERMONPRÉ, Peter; Lafère, Pierre, HE Bruxelles Brabant
      Article scientifique
      Purpose: Data regarding decompression stress after deep closed-circuit rebreather (CCR) dives are scarce. This study aimed to monitor technical divers during a wreck diving expedition and provide an insight in venous gas emboli (VGE) dynamics. Methods: Diving practices of ten technical divers were observed. They performed a series of three consecutive daily dives around 100 m. VGE counts were ...