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    • The effect of pre-dive ingestion of dark chocolate on endothelial function after a scuba divePeer reviewedClosed access 

      15 mars 2015, THEUNISSEN, Sigrid; BALESTRA, Costantino; BOUTROS, Antoine; De Bels, David; Guerrero, François; GERMONPRÉ, Peter, HE Bruxelles Brabant
      Article scientifique
      Objective: The aim of the study was to observe the effects of dark chocolate on endothelial function after scuba diving. Methods: Forty-two male scuba divers were divided into two groups: a control (n=21) and a chocolate group (n=21). They performed a 33-metres deep scuba-air dive for 20 minutes in a diving pool (Nemo 33, Brussels). Water temperature was 33⁰C. The chocolate group ingested 30 g ...

    • Oxidative stress in breath-hold divers after repetitive divesPeer reviewedClosed access 

      08 juin 2013, THEUNISSEN, Sigrid; Sponciello, Nicholas; Rozloznik, Miroslav; GERMONPRÉ, Peter; Guerrero, François; Cialoni, Danilo; BALESTRA, Costantino, HE Bruxelles Brabant
      Article scientifique
      Introduction: Hyperoxia causes oxidative stress. Breath-hold diving is associated with transient hyperoxia followed by hypoxia and a build-up of carbon dioxide (CO₂), chest-wall compression and significant haemodynamic changes. This study analyses variations in plasma oxidative stress markers after a series of repetitive breath-hold dives. Methods: Thirteen breath-hold divers were asked to perform ...

    • 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 ...