Olivier Hue

Université des Antilles | Reunion · Faculty of Science and Technology of Sport and Physical Activity

Objectives: Explore training-related knowledge, beliefs and practices of athletes and the influence of COVID-19-related lockdowns. Methods: Athletes [n = 12,526 classified: world-class (13%), international (21%), national (36%), state (24%), and recreational (6%)] completed an online survey (50 d; 17th May to 5th July 2020) exploring their trainin...

Purpose Sickle cell trait is characterized by the presence of both normal and abnormal haemoglobin in red blood cells. The rate of exertional collapse is increased in athletes and military recruits who carry the trait, particularly in stressful environmental conditions. The aim of the present study was to investigate microvascular function and its...

Aims: The antenatal period provides an important opportunity for giving advice on healthy lifestyle choices. However, the prevalence of maternal obesity is increasing, and women report that they do not receive counseling. We investigated the information given to pregnant women on gestational weight gain, physical activity, and nutrition during preg...

La performance aérobie en climat tropical est diminuée en climat tropical, notamment à cause du dysfonctionnement des mécanismes thermorégulateurs dans ces conditions extrêmes. Diverses solutions sont utilisées chez les athlètes pour en diminuer les effets : acclimatation à la chaleur, refroidissement externe et/ou interne, … Nous avons testé l’hyp...

The Olympic distance triathlon includes maximal exercise bouts with transitions between the activities. This study investigated the effect of an Olympic distance triathlon (1.5-km swim, 40-km bike, 10-km run) on pulmonary diffusion capacity (DLCO). In nine male triathletes (age: 24 ± 4.7 years), we measured DLCO and calculated the DLCO to alveolar...

Optimizing motor learning or performance is at the heart of the concerns of physical education teachers and coaches. Few works have focused on the diving swimming dive start, which consists of moving from a land to an aquatic environment generating perceptual (change of landmarks), psychological (affects) and physical (modified balance) constraints...

To determine the relationships between limiting factors and neuromuscular activity during a self-paced 20-km cycling time trial and evaluate the effect of environmental conditions on fatigue indices. Methods: Ten endurance-trained and heat-acclimated athletes performed in three conditions (ambient temperature, relative humidity): HUMID (30 °C, 90...

The present study proposes to measure and quantify the heart rate variability (HRV) changes during effort and to test the capacity of the produced indices to predict cardiorespiratory fitness measures. Therefore, the beat-to-beat cardiac time interval series of 18 adolescent athletes (15.2 +- 2.0 years) measured during maximal graded effort test we...

The current experimental study evaluated how a tropical climate (i.e., wet and hot environment) influences positive and negative affects, sensation of fatigue and environmental perceptions (i.e., comfort and thermal sensations). A convenience sampling of stu- dents (30 females and 30 males, Mage = 21.94 years, age range: 19– 28 years) who lived all...

Practicing physical activity in a hot and humid climate (HHC) is becoming increasingly common due to anthropogenic climate change and the growing number of international sports events held in warm countries. The aim of this study was to understand the physiological and psychological effects of breathing two air temperatures during cycling exercise...

Many important sporting events are organized in hot ambient conditions. In addition, given the global warming around the world, and because heat also concerns millions of people living in hot-dry and/or hot-humid environments, individuals often perform cognitive and/or cognitivo-motor tasks under heat stress conditions. Hot environment can negative...

Funding Acknowledgements Type of funding sources: Public grant(s) – EU funding. Main funding source(s): European Commission, Region Guadeloupe Background. Sickle cell trait (SCT) is an inherited red blood cell condition without medical consequence in most cases. However, its strong association with increased risk of exercise-induced sudden death (i...

The aim of this study was to test the effect of face cooling with cold water (1.2 ± 0.7°C) vs. face cooling with neutral water (28.0 ± 3.0°C) during high-intensity swimming training on both the core temperature (Tco) and thermal perceptions in internationally ranked long-distance swimmers (5 men’s and 3 women’s) during 2 randomized swimming session...

Background and Objective Questionnaires are essential tools in many scientific fields, including health and medicine. However, the analysis of paper-and-pencil questionnaires is time consuming, source of errors and expensive, limiting its use in large cohort studies. Computer-based questionnaires might be a valuable alternative but they may introdu...

Inflammation and oxidative stress play a key role in the pathophysiology of sickle cell disease (SCD). However, the potential influence of different sickle genotypes, or hydroxyurea (HU) treatment on these factors remains poorly documented. The present study compared several plasma markers of inflammation and oxidative stress, as well as microvascu...

This mini review examines the impact of tropical climate (TC) on motivational factors during aerobic performance and proposes the tracks of an integrative theoretical model to better understand the direct and indirect motivational mechanisms that can operate on athletic performances. TC is detrimental for aerobic performance and, although it clearl...

Physical activity during pregnancy has many health benefits. However, the physical activity level is insufficient throughout pregnancy and women report perceived barriers to physical activity. This study assessed the impact of a counseling intervention offered in addition to routine pregnancy care on physical activity patterns, perceived barriers,...

PDF BACKGROUND: Increase or decrease in lung volumes has been reported following short bouts of high-intensity exercise, and prolonged, moderate intensity exercise, and attributable to the decrease on respiratory muscle strength and endurance. This study investigated whether a change in initial lung volume influences the decrease in respiratory mus...

Objective: Dynamical analysis can be used to study the changes of self-regulated biological processes driven by external stimuli. Recently, heart rate during effort tests has been successfully adjusted with a simple first order differential equation with constant coefficients driven by the body power expenditure. Although producing proper estimatio...

Background: Pregnant women declare perceived barriers to physical activity. Although physical activity is not often dispensed, effective counseling by health professionals is recommended. Health professionals training has been proposed as a target to improve physical activity effective counseling. The objective was to evaluate the physical activity...

High-intensity exercise, marathons, and long distances triathlons have been shown to induce the fatigue of respiratory muscles (RMs). Never-theless, fatigue and the recovery period have not been studied in re-sponse of an Olympic distance triathlon (1.5-km swim, 40-km bike, 10-km run: short-distance triathlon). The aim of this study was to evaluate...

Performance is usually assessed by simple indices stemming from cardiac and respiratory data measured during graded exercise test. The goal of this study is to characterize the indices produced by a dynamical analysis of HR and VO2 for different effort test protocols, and to estimate the construct validity of these new dynamical indices by testing...

The use of cooling techniques in a tropical climate can limit the increase in core body temperature and therefore improve physical exercise performance. However, little is known about the impact of cooling on psychological functioning. The aim of this study was to determine whether cold water intake influences environmental perceptions, affects, an...

Performance is usually assessed by simple indices stemming from cardiac and respiratory data measured during graded exercise test. The goal of this study is to test the interest of using a dynamical analysis of these data. Therefore, two groups of 32 and 14 athletes from two different cohorts performed two different graded exercise testing before a...

Heart rate during effort test has been previously successfully adjusted with a simple first order differential equation with constant coefficients driven by the body power expenditure. Although producing proper estimation and yielding pertinent indices to analyze such measurement, this approach suffers from its inability to model the saturation of...

The aim of this study was to examine performance in hopping tests in male athletes after anterior cruciate ligament reconstruction (ACLR) in the 4-to-6 months post-surgery period. A total of 36 athletes (24 ACLR and 12 controls) participated in this study. The ACLR group consisted of athletes who had undergone an ACLR on their dominant side (ACL DG...

Aerobic performance is negatively impacted by tropical climate due to impairment of thermoregulatory mechanisms. We tested the hypothesis that a torso application of a 4% menthol solution would have the same effect on a best performance 10-km run as an external use of cold water. Thirteen trained male athletes completed four outdoor 10-km runs (T=2...

Aerobic performance is negatively impacted by tropical climate due to impairment of thermoregulatory mechanisms. We tested the hypothesis that a torso application of a 4% menthol solution would have the same effect on a best performance 10-km run as an external use of cold water. Thirteen trained male athletes completed four outdoor 10-km runs (T=2...

Background and objective Warm exposure places high demands on thermoregulation mechanisms, which depend on the effectiveness of the microvascular function. The associations between the microcirculation and metabolism in warm environments have received little attention. The purpose of this study was to explore skin blood flow (SkBF) in response to f...

Inactivity is known to have harmful effects on the physical and mental health of older adults. This study used a randomized, parallel trial design to evaluate whether daily text prompts to practice mindfulness would have a positive impact on the time that adults aged 50 years or older spend in aerobic physical activity. The participants were recrui...

Endurance and prolonged exercise are altered by hot climate. In hot and dry climate, thermoregulation processes, including evapotranspiration, normally maintain a relatively constant body core temperature. In hot and wet climate (usually called “tropical”), the decrease in evapotranspiration efficacy increases the sweating rate, which can rapidly i...

Introduction L'apprentissage moteur est un changement résultant de la pratique, pouvant être facilité par l'utilisation de feedback (Schmidt & Lee, 1999), de pratiques mentales comme l'observation de modèles (Ste-Marie et al., 2012) ou l’imagerie motrice (Eaves, Riach, Holmes, & Wright, 2016). Le but de cette expérience était d'étudier l'effet d'un...

This study assessed the validity of a photoplethysmographic heart rate (HR) monitor, the Polar OH1 in various sports performed in ecological conditions: running, cycling, soccer, kayaking, walking, tennis and fitness. Seventy trained athletes (56 males, 14 females) wore the Polar OH1 armband and the H7 chest belt during training. A total of 390 h a...

Objective: Hot environments are associated with impaired glucose metabolism at rest in healthy humans. The purpose of this study was to explore the contribution of key glucoregulatory hormones and biomarkers to this altered glucose tolerance. Methods: The effects of ambient temperature on glucose tolerance and its determinants were assessed with a...

The thermal discomfort caused by a hot or tropical (i.e., hot and humid) climate can have negative effects on human performance. The 2020 Summer Olympic and Paralympic Games will take place in Tokyo’s hot and humid summer period, possibly exposing athletes to very high environmental stressors. In addition to technical, tactical, physical and nutrit...

Physical performance in a tropical environment, combining high heat and humidity, is a difficult physiological challenge that requires specific preparation. The elevated humidity of a tropical climate impairs the thermoregulatory mechanisms by limiting the rate of sweat evaporation. Hence, a proper management of whole-body temperature is required t...

Physical performance in tropical environments, which combine heat and high humidity, is a challenge that requires specific preparation. The high humidity of a tropical climate alters thermoregulatory capacity by limiting the rate of sweat evaporation. Proper management of whole-body temperature is thus essential to complete an endurance event like...

Physical performance in a tropical environment, combining high heat and humidity, is a difficult physiological challenge that requires specific preparation. The elevated humidity of a tropical climate impairs the thermoregulatory mechanisms by limiting the rate of sweat evaporation. Hence, a proper management of whole-body temperature is required t...

Objective 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 to evaluate their contribution in adipokine secretion. Methods Plasma collected fr...

Heat has an impact on several aspects of human cognition but the effects of the tropical climate (i.e., hot and wet) have rarely been explored. The purpose of this study was to determine whether selective attention and affect are negatively impacted by the tropical climate. The study followed a within-participants design: participants responded to...

This study examined whether claimed self-handicapping influences cohesion and perceived collective efficacy of teammates during a basketball game. Sport sciences students were asked to imagine they were part of a basketball team viewed on an edited video clip of a real game. At the beginning of the first two quarters, virtual teammates declared eit...

The results of the current study didn’t reveal any deleterious effect of TC on the simple and choice reaction time, and stroop tasks performances. These results are consistent with those of Gaoua (2012) who showed that simple and choice reaction time performances were not affected by heat stress. The absence of significant difference between climat...

Introduction The tropical climate (TC), where temperatures can exceed 31°C and relative humidity (rH) exceeds 70%, can be considered an environmental stressor (see Hue, 2001; Robin, Coudevylle, Hue, & Sinnapah, 2017). Accordingly, Kosonen and Tan (2004) suggested that the thermal environment (including heat and humidity) is one of the most importan...

Endurance exercise performance is impaired in a hot and humid environment. This study compared the effects of cold water immersion, with (CMWI) and without (CWI) menthol, on the recovery of cycling performance. Eight heat-acclimatized cyclists (24.1 ± 4.4 years; 65.3 ± 5.2 kg) performed two randomized sessions, each consisting of a 20-min cycling t...

The objective is to present the case of a 21-yr-old athlete observed with non-physiological immediate postprandial insulin response (1162 pmol/l; normal glucose excursion: 6.6 mmol/l), in a warm environment. No suspicion or evidence of any underlying pathology was found in this well-trained Afro-Caribbean male runner. He never reported any hypoglyc...

Method: Participants were assigned to an Imagery 1, Imagery 2 or Placebo group. For 4 weeks, each group was exposed to two conditions (morning text message vs. no morning text message). In the morning message condition, the Imagery groups received a text message with the instruction to mentally imagine performing an APA and the Placebo group recei...

This study investigated the effects of a Tropical Climate (TC) on actual and imagined walking times. Participants had to execute and imagine walking 3 distances with or without a 10-kg weight in either a TC or an Air Conditioning (AC) condition. The motor imagery quality was evaluated by computing the isochrony index. The results revealed that move...

We evaluated anthropometric characteristics and physical fitness in 556 Melanesian adolescents from rural and urban New Caledonia to build health education programs focused on physical activity. In 2013, body weight, height, skinfold thickness, lean body mass (LBM), percentage fat body mass (%FBM), physical fitness (power, agility, speed, maximal a...

Extracellular vesicles (EVs) are biological vectors that can modulate the metabolism of target cells by conveying signalling proteins and genomic material. The level of EVs in plasma is significantly increased in cardiometabolic diseases associated with obesity, suggesting their possible participation in the development of metabolic dysfunction. Wi...

Extracellular vesicles (EVs) are biological vectors that can modulate the metabolism of target cells by conveying signalling proteins and genomic material. The level of EVs in plasma is significantly increased in cardiometabolic diseases associated with obesity, suggesting their possible partici- pation in the development of metabolic dysfunction....

The present study investigated cerebral and muscle hemoglobin oxygen saturation (tissue oxygen index, TOI) in children with sickle cell anemia (SS), sickle cell hemoglobin C disease (SC) and healthy children (AA). TOI was measured by near-infrared spectroscopy (NIRS) and spectral analysis of the TOI variability was used to assess flowmotion and vas...

Proteomic profiling of extracellular vesicles derived from adipocytes reveals the presence of key metabolic proteins involved in the development of cardiovascular diseases associated with obesity

The present study investigated cerebral and muscle hemoglobin oxygen saturation (tissue oxygen index, TOI) in children with sickle cell anemia (SS), sickle cell hemoglobin C disease (SC) and healthy children (AA). TOI was measured by near-infrared spectroscopy (NIRS) and spectral analysis of the TOI variability was used to assess flowmotion and vas...

Oxidative stress and haemolysis-associated nitric oxide (NO) depletion plays a crucial role in the development of vasculopathy in sickle cell anaemia (SS). However it remains unknown whether oxidative stress and haemolysis levels influence vascular function in patients with sickle haemoglobin C disease (SC). In this context microvascular response t...