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Pre-dive Whole-Body Vibration Better Reduces Decompression-Induced Vascular Gas Emboli than Oxygenation or a Combination of Both
30 novembre 2016, BALESTRA, Costantino; THEUNISSEN, Sigrid; Papadopoulou, Virginie; Le Mener, Cédric; GERMONPRÉ, Peter; Guerrero, François; Lafère, Pierre,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: Since non-provocative dive profiles are no guarantor of protection against decompression sickness, novel means including pre-dive "preconditioning" interventions, are proposed for its prevention. This study investigated and compared the effect of pre-dive oxygenation, pre-dive whole body vibration or a combination of both on post-dive bubble formation. Methods: Six healthy volunteers performed ...
The effect of pre-dive ingestion of dark chocolate on endothelial function after a scuba dive
15 mars 2015, THEUNISSEN, Sigrid; BALESTRA, Costantino; BOUTROS, Antoine; De Bels, David; Guerrero, François; GERMONPRÉ, Peter,
- HE Bruxelles Brabant
,
- Article scientifique
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 ...
Dark chocolate reduces endothelial dysfunction after successive breath-hold dives in cool water
16 septembre 2013, THEUNISSEN, Sigrid; Schumacker, Julie; Guerrero, François; Tillmans, Frauke; BOUTROS, Antoine; Lambrechts, Kate; Mazur, Alexandra; Pieri, Massimo; GERMONPRÉ, Peter; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Objective: The aim of this study is to observe the effects of dark chocolate on endothelial function after a series of successive apnea dives in non-thermoneutral water.
Methods: Twenty breath-hold divers were divided into two groups: a control group (8 males and 2 females) and a chocolate group (9 males and 1 female). The control group was asked to perform a series of dives to 20 m adding up to ...
Oxidative stress in breath-hold divers after repetitive dives
08 juin 2013, THEUNISSEN, Sigrid; Sponciello, Nicholas; Rozloznik, Miroslav; GERMONPRÉ, Peter; Guerrero, François; Cialoni, Danilo; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
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 ...
Nitric oxide-related endothelial changes in breath-hold and scuba divers
01 mars 2013, THEUNISSEN, Sigrid; Guerrero, François; Sponciello, Nicholas; Cialoni, Danilo; Pieri, Massimo; GERMONPRÉ, Peter; Obeid, Georges; Tillmans, Frauke; Papadopoulou, Virginie; HEMELRYCK, Walter; Marroni, Alessandro; De Bels, David; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Objective: Scuba and breath-hold divers are compared to investigate whether endothelial response changes are similar despite different exposure(s) to hyperoxia.
Design: 14 divers (nine scuba and five breath-holding) performed either one scuba dive (25m/25 minutes) or successive breath-hold dives at a depth of 20 meters, adding up to 25 minutes of immersion time in a diving pool. Flow-mediated ...
The 'normobaric oxygen paradox': does it increase haemoglobin?
14 juin 2012, De Bels, David; THEUNISSEN, Sigrid; Devriendt, Jacques; GERMONPRÉ, Peter; Lafère, Pierre; Valsamis, Joseph; SNOECK, Thyl; Meeus, Philippe; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Background: A novel approach to increasing erythropoietin (EPO) using oxygen (O2) (the 'normobaric oxygen paradox') has been reported in healthy volunteers. We investigated whether the EPO increase is sufficient to induce erythropoiesis by comparing two protocols of O2 administration.
Methods: We compared the effect of daily versus alternate days 100% O2, breathed for 30 minutes, on haemoglobin ...
Ultrasound lung "comets" increase after breath-hold diving
23 octobre 2010, LAMBRECHTS, Kate; GERMONPRÉ, Peter; Charbel, Brian; Cialoni, Danilo; Musimu, Patrick; Sponsiello, Nicola; Marroni, Alessandro; Pastouret, Fredéric; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
The purpose of the study was to analyze the ultrasound lung comets (ULCs) variation, which are a sign of extra-vascular lung water. Forty-two healthy individuals performed breath-hold diving in different conditions: dynamic surface apnea; deep variable-weight apnea and shallow, face immersed without effort (static maximal and non-maximal). The number of ULCs was evaluated by means of an ultrasound ...