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A fully automated method for late ventricular diastole frame selection in post-dive echocardiography without ECG gating
02 mars 2021, Markley, Eric; Le, David; Germonpré, Peter; BALESTRA, Costantino; Tillmans, Frauke; Denoble, Petar; Freiberger, Jake; Moon, Richard; Dayton, Paul; Papadopoulou, Virginie,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Venous gas emboli (VGE) are often quantified as a marker of decompression stress on echocardiograms. Bubble-counting has been proposed as an easy to learn method, but remains time-consuming, rendering large dataset analysis impractical. Computer automation of VGE counting following this method has therefore been suggested as a means to eliminate rater bias and save time. A necessary step for this ...
A fully automated method for late ventricular diastole frame selection in post-dive echocardiography without ECG gatingEr
02 mars 2021, Markley, Eric; Germonpré, Peter; BALESTRA, Costantino; Tillmans, Frauke; Denoble, Petar; Freiberger, Jake; Moon, Richard; Dayton, Paul; Papadopoulou, Virginie,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Venous gas emboli (VGE) are often quantified as a marker of decompression stress on echocardiograms. Bubble-counting has been proposed as an easy to learn method, but remains time-consuming, rendering large dataset analysis impractical. Computer automation of VGE counting following this method has therefore been suggested as a means to eliminate rater bias and save time. A necessary step for this ...
A red orange extract modulates the vascular response to a recreational dive: a pilot study on the effect of anthocyanins on the physiological consequences of scuba diving
07 novembre 2015, BALESTRA, Costantino; Cimino, Francesco; THEUNISSEN, Sigrid; SNOECK, Thyl; Provyn, Steven; Canali, Raffaella; Bonina, Andrea; Virgili, Fabio,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Nutritional antioxidants have been proposed as an expedient strategy to counter the potentially deleterious effects of scuba diving on endothelial function, flow-mediated dilation (FMD) and heart function. Sixteen volunteers performing a single standard dive (20 min at 33 m) according to US Navy diving procedures were randomly assigned to two groups: one was administered with two doses of 200 mg of ...
A ternary model of decompression sickness in rats
01 décembre 2014, Buzzacott, Peter; LAMBRECHTS, Kate; Mazur, Aleksandra; Wang, Qiong; Papadopoulou, Virginie; Theron, Michaël; BALESTRA, Costantino; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Background: Decompression sickness (DCS) in rats is commonly modelled as a binary outcome. The present study aimed to develop a ternary model of predicting probability of DCS in rats, (as no-DCS, survivable-DCS or death), based upon the compression/decompression profile and physiological characteristics of each rat.
Methods: A literature search identified dive profiles with outcomes no-DCS, ...
Architectural and Mechanical Changes after Five Weeks of Intermittent Static Stretch Training on the Medial Gastrocnemius Muscle of Active Adults
27 mars 2023, Levenez, Morgan; Moeremans, Mathieu; Boorghs, Cédric; Vigouroux, Florent; Leveque, Clément; HEMELRYCK, Walter; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
We investigated the effects of intermittent long-term stretch training (5 weeks) on the architectural and mechanical properties of the muscle-tendon unit (MTU) in healthy humans. MTU's viscoelastic and architectural properties in the human medial gastrocnemius (MG) muscle and the contribution of muscle and tendon structures to the MTU lengthening were analyzed. Ten healthy volunteers participated ...
Beneficial effect of enriched air nitrox on bubble formation during scuba diving. An open-water study
12 avril 2017, Brebek, Anne-Kathrin; Deussen, Andreas; Schmitz-Peiffer, Henning; Range, Ursula; BALESTRA, Costantino; Cleveland, Sinclair; Schipke, Jochen,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Backround: Nitrogen narcosis impairs cognitive function, a fact relevant during SCUBA-diving. Oxygen-enriched air (nitrox) became popular in recreational diving, while evidence of its advantages over air is limited. AIM: Compare effects of nitrox28 and air on two psychometric tests. METHODS: In this prospective, double-blind, open-water study, 108 advanced divers (38 females) were randomized to an ...
Clustering of recreational divers by their health conditions in a database of a citizen science project
05 mai 2019, Ozyigit, Tamer; Yauz, Cüneyt; Egi, Salih Murat; Pieri, Massimo; BALESTRA, Costantino; Marroni, Alessandro,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Divers Alert Network Europe has created a database with a large amount of dive-related data that has been collected since 1993 within the scope of the Diving Safety Laboratory citizen science project. The main objectives of this study are the grouping divers by their health information and revealing significant differences in diving parameters using data mining techniques. Due to the methodology of ...
Commercial Divers' Subjective Evaluation of Saturation
30 janvier 2019, Imbert, Jean Pierre; BALESTRA, Costantino; Kiboub, Fatima Zohra; Loennechen, Øyvind; Eftedal, Ingrid,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Commercial saturation diving involves divers living and working in an enclosed atmosphere with elevated partial pressure of oxygen (ppO2) for weeks. The divers must acclimatize to these conditions during compression, and for up to 28 days until decompression is completed. During decompression, the ppO2 and ambient pressure are gradually decreased; then the divers must acclimatize again to breathing ...
Comparison of insulation provided by dry or wetsuits among recreational divers during cold water immersion (< 5 degrees C)
05 octobre 2021, Lafère, Pierre; Guerrero, François; GERMONPRÉ, Peter; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
BACKGROUND: Divers thermal status influences susceptibility to decompression sickness hence the need for proper insulation during immersion in cold water. However, there is a lack of data on thermal protection provided by diving suits, hence this study. MATERIALS AND METHODS: Two different groups of divers wearing either a wetsuit (n = 15) or a dry suit (n = 15) volunteered for this study. Anthropometric ...
Comparison of insulation provided by dry or wetsuits among recreational divers during cold water immersion (< 5 degrees C)
05 octobre 2021, Lafère, Pierre; Guerrero, François; GERMONPRÉ, Peter; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
BACKGROUND: Divers thermal status influences susceptibility to decompression sickness hence the need for proper insulation during immersion in cold water. However, there is a lack of data on thermal protection provided by diving suits, hence this study. MATERIALS AND METHODS: Two different groups of divers wearing either a wetsuit (n = 15) or a dry suit (n = 15) volunteered for this study. Anthropometric ...
Coping With Extreme Environments: A Physiological/Psychological Approach
25 juin 2019, BALESTRA, Costantino; Kot, Jacek; Efrati, Shai; Guerrero, François; Blatteau, Jean-Eric; Besnard, Stéphane,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Correlation between Patent Foramen Ovale, cerebral “lesions” and neuropsychometric testing in experienced sports divers: does diving damage the brain?
Article scientifique
SCUBA diving exposes divers to decompression sickness (DCS). There has been considerable debate whether divers with a Patent Foramen Ovale of the heart have a higher risk of DCS because of the possible right-to-left shunt of venous decompression bubbles into the arterial circulation. Symptomatic neurological DCS has been shown to cause permanent damage to brain and spinal cord tissue; it has been ...
Critical Flicker Fusion Frequency: A Marker of Cerebral Arousal During Modified Gravitational Conditions Related to Parabolic Flights
02 octobre 2018, BALESTRA, Costantino; Machado, Marie-Laure; Theunissen, Sigrid; BALESTRA, Ambre; Cialoni, Danilo; Clot, Christian; Besnard, Stépane; Kammacher, Laura; Delzenne, Julie; GERMONPRÉ, Peter; Lafère, Pierre,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
In situ evaluation of human brain performance and arousal remains challenging during operational circumstances, hence the need for a rapid, reliable and reproducible tool. Here we hypothesized that the Critical flicker fusion frequency (CFFF) reflecting/requiring visual integration, visuo-motor skills and decision-taking process might be a powerful, fast and simple tool in modified gravity environments. ...
Cutis Marmorata skin decompression sickness is a manifestation of brainstem bubble embolization, not of local skin bubbles
10 avril 2015, Germonpré, Peter; BALESTRA, Costantino; Obeid, Georges; Chers, Dirk,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
"Cutis Marmorata" skin symptoms after diving, most frequently in the form of an itching or painful cutaneous red-bluish discoloration are commonly regarded as a mild form of decompression sickness (DCS), and treated with oxygen inhalation without reverting to hyperbaric recompression treatment. It has been observed that the occurrence of Cutis Marmorata is frequently associated with the presence of ...
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 ...
Decompression induced bubble dynamics on ex vivo fat and muscle tissue surfaces with a new experimental set up
04 avril 2015, Papadopoulou, Virginie; Evgenidis, Sotiris; Eckersley, Robert; Mesimeris, Thodoris; BALESTRA, Costantino; Kostoglou, Margaritis; Tang, Meng-Xing; Karapantsios, Thodoris,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Vascular gas bubbles are routinely observed after scuba dives using ultrasound imaging, however the precise formation mechanism and site of these bubbles are still debated and growth from decompression in vivo has not been extensively studied, due in part to imaging difficulties. An experimental set-up was developed for optical recording of bubble growth and density on tissue surface area during ...
Decreased Incidence of Pulmonary Barotrauma After Discontinuation of Emergency Free Ascent Training
22 août 2018, Lafère, Pierre; GERMONPRÉ, Peter; Guerrero, François; Marroni, Alessandro; BALESTRA, Costantino,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
INTRODUCTION: Because a significant association between training to perform emergency free ascent (EFA) and the occurrence of pulmonary barotrauma (PBT) was demonstrated in 2006, the Belgian Underwater Federation (BUF) decided to discontinue this procedure. An evaluation was needed 10 yr after the implementation of this change. METHODS: All medical records with a diagnosis of PBT that occurred in ...
Dive Risk Factors, Gas Bubble Formation, and Decompression Illness in Recreational SCUBA Diving: Analysis of DAN Europe DSL Data Base
10 mai 2017, Cialoni, Danilo; Pieri, Massimo; BALESTRA, Costantino; Marroni, Alessandro,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Introduction: The popularity of SCUBA diving is steadily increasing together with the number of dives and correlated diseases per year. The rules that govern correct decompression procedures are considered well known even if the majority of Decompression Sickness (DCS) cases are considered unexpected confirming a bias in the "mathematical ability" to predict DCS by the current algorithms. Furthermore, ...
Diving deeper into SCUBA Science
12 février 2017, BALESTRA, Costantino; GERMONPRÉ, Peter,
- HE Bruxelles Brabant
,
- Livre/Ouvrage ou monographie
Livre/Ouvrage ou monographie
The editors of and authors of this book are a cadre of scientists and physicians with broad experience and knowledge of diving physiology and decompression theory. As is often the case, it requires a group effort to succeed in advancing practical knowledge. The colloquialism "the whole is greater than the sum of its parts" is often true and the PHYPODE Reasearch Group epitomizes this concept. By ...
Diving physiopathology: the end of certainties? Food for thought
27 juin 2019, BALESTRA, Costantino; GERMONPRÉ, Peter; Rocco, Monica; Biancofiore, Giovanni; Kot, Jacek,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Our understanding of decompression physiopathology has slowly improved during this last decade and some uncertainties have disappeared. A better understanding of anatomy and functional aspects of Patent Foramen Ovale (PFO) have slowly resulted in a more liberal approach toward the medical fitness to dive for those bearing a PFO. Circulating vascular gas emboli (VGE) are considered the key actors in ...