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Objective vs. Subjective Evaluation of Cognitive Performance During 0.4-MPa Dives Breathing Air or Nitrox
19 avril 2017, GERMONPRÉ, Peter; BALESTRA, Costantino; Hemelryck, Walter; Buzzacott, Peter; Lafère, Pierre,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
BACKGROUND: Divers try to limit risks associated with their sport, for instance by breathing enriched air nitrox (EANx) instead of air. This double blinded, randomized trial was designed to see if the use of EANx could effectively improve cognitive performance while diving. METHODS: Eight volunteers performed two no-decompression dry dives breathing air or EANx for 20 min at 0.4 MPa. Cognitive ...
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 ...
Effects of oxygen-enriched air on cognitive performance during SCUBA-diving - an open-water study
12 avril 2017, Brebeck, Anne-Kathrin; Deussen, Andreas; Schmitz-Pfeiffer, 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 ...
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 ...
Venous gas emboli are involved in post-dive macro, but not microvascular dysfunction
21 janvier 2017, LAMBRECHTS, Kate; BALESTRA, Costantino; Theron, Michaël; Henckes, Anne; Galinat, Hubert; Mignant, Fanny; Belhomme, Marc; Pontier, Jean-Michel; Guerrero, François,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
Purpose: Previous studies have shown vascular dysfunction of main conductance arteries and microvessels after diving. We aim to evaluate the impact of bubble formation on vascular function and haemostasis. To achieve this, we used a vibration preconditioning to influence bubble levels without changing any other parameters linked to the dive.
Methods: Twentty-six divers were randomly assigned to ...
Preconditioning to Reduce Decompression Stress in Scuba Divers
Article scientifique
BACKGROUND: Using ultrasound imaging, vascular gas emboli (VGE) are observed after asymptomatic scuba dives and are considered a key element in the potential development of decompression sickness (DCS). Diving is also accompanied with vascular dysfunction, as measured by flow-mediated dilation (FMD). Previous studies showed significant intersubject variability to VGE for the same diving exposure and ...
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 ...
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 ...
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 ...
Flying after diving: should recommendations be reviewed? In-flight echocardiographic study in bubble-prone and bubble-resistant divers
13 mai 2015, Cialoni, Danilo; Pieri, Massimo; BALESTRA, Costantino; Marroni, Alessandro,
- HE Bruxelles Brabant
,
- Article scientifique
Article scientifique
INTRODUCTION: Inert gas accumulated after multiple recreational dives can generate tissue supersaturation and bubble formation when ambient pressure decreases. We hypothesized that this could happen even if divers respected the currently recommended 24-hour pre-flight surface interval (PFSI). METHODS: We performed transthoracic echocardiography (TTE) on a group of 56 healthy scuba divers (39 male, ...