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Variation of Cognitive Function During a Short Stay at Hypobaric Hypoxia Chamber (Altitude: 3842 M)
26 juin 2019, De Bels, David; Pierrakos, Charalampos; Bruneteau, Adrien; Reul, François; Crèvecoeur, Quentin; Marrone, Nicolas; Vissenaeken, Dirk; Borgers, Guy; Balestra, Costantino; Honoré, Patrick M.; THEUNISSEN, Sigrid,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Objective: To observe the effects of a fast-acute ascent to high altitude on brain cognitive function and transcranial doppler parameters in order to understand the physiological countermeasures of hypoxia.
Methods: 17 high-altitude-naïve male subjects (mean age was 26.3 ± 8.1 years) participated in the study. We measured Critical Flicker Fusion Frequency (CFFF), blood oxygen saturation, Psychology ...
Variability in circulating gas emboli after a same scuba diving exposure
30 avril 2018, Papadopoulou, Virginie; Germonpré, Peter; Cosgrove, David; Eckersley, Robert; Dayton, Paul; Obeid, Georges; BOUTROS, Antoine; Tang, Meng-Txing; THEUNISSEN, Sigrid; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
PURPOSE: A reduction in ambient pressure or decompression from scuba diving can result in ultrasound-detectable venous gas emboli (VGE). These environmental exposures carry a risk of decompression sickness (DCS) which is mitigated by adherence to decompression schedules; however, bubbles are routinely observed for dives well within these limits and significant inter-personal variability in DCS risk ...
ULTRASONOGRAPHIC ASSESSMENT OF NECK MUSCULAR SIZE AND RANGE OF MOTION IN RUGBY PLAYERS
01 février 2018, HEMELRYCK, Walter; Calistri, Josselin; Papadopoulou, Virginie; THEUNISSEN, Sigrid; Dugardeyn, Christian; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Background: World Rugby Union laws are constantly evolving towards stringent injury-prevention, particularly for contested scrums, since front row players are most at risk of cervical spine injuries. Recently, some countries have also introduced tailored training programs and minimum performance requirements for playing in the front row. Nevertheless, these approaches lack an objective assessment ...
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 ...
The effect of a passive stretch training protocol on performance during a drop jump in humans
30 mars 2013, Levenez, Morgan; THEUNISSEN, Sigrid; Bottero, Antoine; SNOECK, Thyl; Tinlot, Arnaud; BALESTRA, Costantino; Provyn, Steven,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Our study's aim is to show how a five-week stretch training protocol, based on passive stretching, can change muscle performance during a drop jump (stretch shortening cycle). METHODS: This study observes in 8 healthy subjects (four males and four females), the effect of a 5-week passive stretch training protocol on the stretch shortening cycle (SSC) during the performance of a drop jump, and identify ...
The effect of a passive stretch training protocol on performance during a drop jump in humans
15 juin 2013, Lévénez, Morgan; THEUNISSEN, Sigrid; Bottero, Antoine; SNOECK, Thyl; Bruyère, A; Tinlot, Arnaud; BALESTRA, Costantino; Provyn, Steven,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Aim: Our study's aim is to show how a five-week stretch training protocol, based on passive stretching, can change muscle performance during a drop jump (stretch shortening cycle).
Methods: This study observes in 8 healthy subjects (four males and four females), the effect of a 5-week passive stretch training protocol on the stretch shortening cycle (SSC) during the performance of a drop jump, ...
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 ...
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 ...
Pre-dive Whole-Body Vibration Better Reduces Decompression-Induced Vascular Gas Emboli than Oxygenation or a Combination of Both
17 février 2015, Cavalade, Maxence; Papadopoulou, Virginie; THEUNISSEN, Sigrid; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: The purpose of this study was (1) to further explore the heart rate dynamics and assess a potential cardiovascular risk in response to 4000 m jumps in experienced skydivers; (2) to assess whether there is an impact of such jumps on skydivers' cortical arousal or not, which may impact their decision making processes.
Method: 18 experienced skydivers performed successive jumps from a plane ...
Physiology of repeated mixed gas 100-m wreck dives using a closed-circuit rebreather: a field bubble study
28 novembre 2021, BALESTRA, Costantino; Guerrero, François; THEUNISSEN, Sigrid; GERMONPRÉ, Peter; Lafère, Pierre,
- HE Bruxelles Brabant
,
- Article scientifique
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 ...