A5034290133- Sports Performance and Training
- Cardiovascular and exercise physiology
- Hemoglobinopathies and Related Disorders
- Thermoregulation and physiological responses
- Exercise and Physiological Responses
- Iron Metabolism and Disorders
- Blood properties and coagulation
- Sports injuries and prevention
- Cardiovascular Effects of Exercise
- Climate Change and Health Impacts
- Heart Rate Variability and Autonomic Control
- Muscle metabolism and nutrition
- Erythrocyte Function and Pathophysiology
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Obesity, Physical Activity, Diet
- Physical Activity and Health
- Dental Implant Techniques and Outcomes
- High Altitude and Hypoxia
- Temporomandibular Joint Disorders
- Adipose Tissue and Metabolism
- Body Composition Measurement Techniques
- Dental materials and restorations
- Dental Radiography and Imaging
- Sport Psychology and Performance
- Gestational Diabetes Research and Management
Centre National de la Recherche Scientifique
2020-2025
Aix-Marseille Université
2014-2025
Université des Antilles
2015-2024
University of the West Indies System
2010-2020
Hôpital de la Timone
2020
Mère et Enfant en Milieu Tropical
1999-2019
Géosciences Montpellier
2017
Qatar Orthopaedic and Sports Medicine Hospital
2015
Centre National de la Médecine et des Sciences des Sports
2013
University of Puerto Rico at Carolina
2013
Extracellular vesicles (EVs) are biological vectors that can modulate the metabolism of target cells by conveying signalling proteins and genomic material. The level EVs in plasma is significantly increased cardiometabolic diseases associated with obesity, suggesting their possible participation development metabolic dysfunction. With regard to poor definition adipocyte-derived EVs, purpose this study was characterise both qualitatively quantitatively subpopulations secreted fat cells....
Abstract Objective Our objective was to explore the training-related knowledge, beliefs, and practices of athletes influence lockdowns in response coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome 2 (SARS-CoV-2). Methods Athletes ( n = 12,526, comprising 13% world class, 21% international, 36% national, 24% state, 6% recreational) completed an online survey that available from 17 May 5 July 2020 explored their training behaviors (training...
Aim: To determine if there are correlations between the physical fitness of young soccer players assessed by field and laboratory testing. Methods: Thirty four male took part in study (mean (SD) age 17.5 (1.1) years, height 177.8 (6.7) cm, weight 70.5 (6.4) kg). Maximal oxygen uptake (V o 2 max ) during treadmill running vertical jump on a force platform were measured laboratory. Field tests consisted specific endurance test (Bangsbo test) 30 m sprint with 10 lap times. Results: The Bangsbo...
Recent evidence suggests that red blood cell aggregation and the ratio of hematocrit to viscosity (HVR), an index oxygen transport potential blood, might considerably modulate flow dynamics in microcirculation. It thus seems likely these factors could play a role sickle disease.We compared characteristics, HVR at different shear rates between anemia hemoglobin C disease (SCC) patients, trait carriers (AS) control individuals (AA).Blood determined high rate was lower (n=21) than AA (n=52), AS...
Although pulmonary hypertension, leg ulcers, priapism, stroke and glomerulopathy in sickle cell anaemia (SCA) result from the adverse effects of chronic haemolysis on vascular function (haemolytic phenotype), osteonecrosis, acute chest syndrome painful vaso-occlusive crises are caused by abnormal adhesion increased blood viscosity (viscosity-vaso-occlusion phenotype). However, this model with two sub-phenotypes does not take into account haemorheological dimension. We tested relationships...
Recent evidence suggests that autonomic nervous system activity could be involved in the pathophysiology of sickle cell disease, but it is unclear whether differences are detectable during steady state patients with mild and severe disease. The aim present study was to compare activity, blood rheology, inflammation anemia according frequency acute pain crisis.Twenty-four healthy volunteers, 20 milder 15 more disease were recruited. Milder defined as having no crisis within previous year....
Strenuous exercise is associated with an inflammatory response involving the activation of several types blood cells. In order to document specific these cell types, we studied effect three maximal tests conducted
We investigated the effect of time-of-day on both maximal sprint power and repeated-sprint ability (RSA). Nine volunteers (22+/-4 yrs) performed a RSA test in morning (07:00 to 09:00 h) evening (17:00 19:00 different days random order. The cycle consisted five, 6 sec sprints interspersed by 24 passive recovery. Both blood lactate concentration heart rate were higher than (lactate values post exercise: 13+/-3 versus 11+/-3 mmol/L(-1), p<0.05). peak developed during first was (958+/-112 vs....
Purpose: To investigate the effects of environmental temperature and diurnal increase in body on muscle contractile processes, 11 male subjects performed maximal submaximal isometric contractions knee extensors with recording electromyographic activity four different conditions (morning/neutral, morning/moderately warm humid, afternoon/neutral, afternoon/moderately humid). Methods: The morning experiments were conducted between 0700 1900 h, afternoon 0500 h. mean laboratory temperatures...
Purpose This study compares the effects of neutral temperature, cold and ice-slush beverages, with without 0.5% menthol on cycling performance, core temperature (Tco) stress responses in a tropical climate (hot humid conditions). Methods Twelve trained male cyclists/triathletes completed six 20-km exercise trials against clock 30.7°C±0.8°C 78%±0.03% relative humidity. Before after warm-up, before every 5 km during exercise, athletes drank 190 mL either aromatized (i.e., 0.5 (5 gr/L)) or...
A recent laboratory study demonstrated that the ingestion of a cold/menthol beverage improved exercise performance in hot and humid environment during 20 km all-out cycling. Therefore, aim this was to determine whether cold water/ice-slurry with menthol would improve outdoor conditions.Ten trained males completed three trials five blocks consisting 4-km cycling 1.5-km running. During warm-up, every block recovery, athletes drank 190 ml aromatized (i.e., 0.05 mL menthol) at temperatures:...
Obesity-associated metabolic dysfunctions are linked to dysregulated production of adipokines. Accumulating evidence suggests a role for fat-derived extracellular vesicles (EVs) in obesity-metabolic disturbances. Since EVs convey numerous proteins we aimed evaluate their contribution adipokine secretion. Plasma collected from syndrome patients were used isolate EV subtypes, namely microvesicles (MVs) and exosomes (EXOs). Numerous soluble factor concentrations measured successively on total,...
Abstract This study assessed the validity of a photoplethysmographic heart rate (HR) monitor, Polar OH1 in various sports performed ecological conditions: running, cycling, soccer, kayaking, walking, tennis and fitness. Seventy trained athletes (56 males, 14 females) wore armband H7 chest belt during training. A total 390 h 38 min recording were compared using 20-bpm window to assess data quality, Bland-Altman agreements ICC analyses used test accuracy. Linear regression evaluated HR...
The present study proposes to measure and quantify the heart rate variability (HRV) changes during effort as a function of test capacity produced indices predict cardiorespiratory fitness measures. Therefore, beat-to-beat cardiac time interval series 18 adolescent athletes (15.2 ± 2.0 years) measured maximal graded were detrended using dynamical first-order differential equation model. HRV was then calculated standard deviation RR intervals (SDRR) within successive windows one minute....
This study compared the hemorheological responses of a group sickle cell trait (SCT) carriers with those control (Cont) in response to 40 min submaximal exercise (exercise intensity, 55% aerobic peak power) performed two conditions: one water offered ad libitum, i.e., hydration (Hyd) condition, and without water, dehydration (Dehyd) condition. Blood plasma viscosities, as well red blood rigidity, were determined at rest, end exercise, 2 h recovery cone plate viscometer high shear rate 37...
The hematocrit-to-viscosity ratio (HVR) has been widely used an estimate of red blood cell (RBC) oxygen transport effectiveness into the microvasculature or as delivery index. However, no study investigated possibility HVR to truly reflect RBC be We measured viscosity at high shear rate (225 s(-1)), hematocrit, HVR, well microvascular oxyhemoglobin saturation (TOI; tissue index) by spatial resolved near-infrared spectroscopy (NIRS) cerebral and muscle levels in three population known have...
This study assessed the anthropometric and physiological characteristics of elite Melanesian futsal players in order to determine best performance predictors. Physiological parameters were measured 14 (MEL-G, 24.4±4.4 yrs) 8 Caucasian (NMEL-G, 22.9±4.9) players, using tests jump-and-reach (CMJ), agility (T-Test), repeated sprint ability (RSA), RSA with change-of-direction (RSA-COD), sprints 5 m, 10 15 30 m lap times, aerobic fitness 30-15 intermittent test (30-15 IFT). The data revealed...
To investigate differences in athletes' knowledge, beliefs, and training practices during COVID-19 lockdowns with reference to sport classification sex. This work extends an initial descriptive evaluation focusing on athlete classification.Athletes (12,526; 66% male; 142 countries) completed online survey (May-July 2020) assessing toward training. Sports were classified as team sports (45%), endurance (20%), power/technical (10%), combat (9%), aquatic (6%), recreational (4%), racquet (3%),...