Which Relevant Information do Preschoolers and Schoolers Perceive and Select for Imitating a Series of walking Movement?

International audienceImitation is commonly considered as a hierarchically organized mechanism. It is frequently used to explore various scientific fields but few works have studied how locomotion movements are imitated. The current study aims to investigate and expand the findings regarding which information children of different age groups select and integrate for performing a series of locomotion movements. One hundred and thirty children from 3.5 to 7.5 years of age were instructed to walk in step-alternating mode on and between obstacles in different imitation forms following gestural demonstration, and in a control condition following verbal instructions. The children’s performances were videotaped, coded in binary data, and then put into percentage. Results showed first, that all children performed the modeled walking movements, but did not necessarily do so with the same step-alternating mode or footedness and second, that the model helped the preschoolers to adopt his step-alternating mode and stabilized the schoolers from the age of 5.5-year-olds. These findings reveal that the age of 5.5 is crucial for imitating a walking task while overcoming the constraints of balance and propulsion

Which Relevant Information do Preschoolers and Schoolers Perceive and Select for Imitating a Series of walking Movement?

International audienceImitation is commonly considered as a hierarchically organized mechanism. It is frequently used to explore various scientific fields but few works have studied how locomotion movements are imitated. The current study aims to investigate and expand the findings regarding which information children of different age groups select and integrate for performing a series of locomotion movements. One hundred and thirty children from 3.5 to 7.5 years of age were instructed to walk in step-alternating mode on and between obstacles in different imitation forms following gestural demonstration, and in a control condition following verbal instructions. The children’s performances were videotaped, coded in binary data, and then put into percentage. Results showed first, that all children performed the modeled walking movements, but did not necessarily do so with the same step-alternating mode or footedness and second, that the model helped the preschoolers to adopt his step-alternating mode and stabilized the schoolers from the age of 5.5-year-olds. These findings reveal that the age of 5.5 is crucial for imitating a walking task while overcoming the constraints of balance and propulsion

Imitation d'un enchainement moteur par des enfants de 3.5 à 7.5 (proposition de modélisation)

PARIS5-BU Saints-Pères (751062109) / SudocPARIS5-STAPS (751152102) / SudocSudocFranceF

Imitation d'un enchainement moteur par des enfants de 3.5 à 7.5 (proposition de modélisation)

PARIS5-BU Saints-Pères (751062109) / SudocPARIS5-STAPS (751152102) / SudocSudocFranceF

Barrières et facilitateurs à l'activité physique en oncologique en Seine-Saint-Denis : étude qualitative selon l'approche socio-écologique

Introduction: Despite the undeniable benefits of physical activity (PA) during and beyond cancer treatments, patients do not always undertake and/or maintain it. The aim of the study is to identify, describe and understand the barriers and facilitators of PA practice among adults arriving at the end of treatment for solid cancer, in precarious situations, living in Seine-Saint-Denis. Methods: The study was conducted using a descriptive qualitative phenomenological method involving semi-directed interviews with 23 participants during and beyond cancer. Results: Multiple-level factors (micro, meso, macro) are involved in active behavior of patients. Three main facilitators were identified: perceived benefit, social support, and urban planning. Three barriers are identified: (1) physical and psychological disorders whether or not related to cancer and its treatment, (2) precariousness, organizational constraints, unfavorable social environment, (3) lack of coordination, lack of accurate and appropriate information, lack of realistic referral to PA offers. Discussion: A diversity of representations, combinations of factors, and experiences are described. Getting people with cancer to engage in and maintain long-term PA is a complex task, requiring multidisciplinary action on all socio-ecological factors.Introduction : Malgré les bénéfices incontestables de la pratique d’activité physique (AP) au cours et au décours des traitements en oncologie, celle-ci n’est pas toujours entreprise et/ou maintenue par les patients. Le but de l’étude est d’identifier, de décrire et de comprendre les barrières et les facilitateurs à la pratique d’AP chez les adultes arrivant en fin de traitement d’un cancer solide, en situation de précarité, vivant en Seine-Saint-Denis.Méthodes : L’étude est menée selon une méthode qualitative phénoménologique par entretiens semi-dirigés auprès de 23 personnes pendant et après les traitements.Résultats : Les différents environnements décrits par le modèle socio-écologique (micro, méso, macro) influencent le comportement d’AP des patients. Trois facilitateurs principaux sont mis en lumière : le bénéfice perçu de l’AP sur la santé, le soutien social, l’aménagement territorial. Trois barrières sont identifiables : (1) les troubles physiques et psychologiques en lien ou non avec la maladie et ses traitements, (2) la situation de précarité, les contraintes organisationnelles, l’environnement social peu favorable, (3) le manque de coordination, d’informations précises et d’orientation adaptées et réalistes vers les offres d’AP.Discussion : Diverses représentations, combinaison de facteurs, expériences vécues sont décrites. L’engagement et le maintien d’une AP pérenne des personnes atteintes de cancer est complexe et nécessite d’agir sur l’ensemble des facteurs socio-écologiques, de façon pluridisciplinaire

Barrières et facilitateurs à l'activité physique en oncologie en Seine-Saint-Denis : étude qualitative selon l'approche socio-écologique

International audienceIntroduction: Despite the undeniable benefits of physical activity (PA) during and beyond cancer treatments, patients do not always undertake and/or maintain it. The aim of the study is to identify, describe and understand the barriers and facilitators of PA practice among adults arriving at the end of treatment for solid cancer, in precarious situations, living in Seine-Saint-Denis. Methods: The study was conducted using a descriptive qualitative phenomenological method involving semi-directed interviews with 23 participants during and beyond cancer. Results: Multiple-level factors (micro, meso, macro) are involved in active behavior of patients. Three main facilitators were identified: perceived benefit, social support, and urban planning. Three barriers are identified: (1) physical and psychological disorders whether or not related to cancer and its treatment, (2) precariousness, organizational constraints, unfavorable social environment, (3) lack of coordination, lack of accurate and appropriate information, lack of realistic referral to PA offers. Discussion: A diversity of representations, combinations of factors, and experiences are described. Getting people with cancer to engage in and maintain long-term PA is a complex task, requiring multidisciplinary action on all socio-ecological factors.Introduction : Malgré les bénéfices incontestables de la pratique d’activité physique (AP) au cours et au décours des traitements en oncologie, celle-ci n’est pas toujours entreprise et/ou maintenue par les patients. Le but de l’étude est d’identifier, de décrire et de comprendre les barrières et les facilitateurs à la pratique d’AP chez les adultes arrivant en fin de traitement d’un cancer solide, en situation de précarité, vivant en Seine-Saint-Denis.Méthodes : L’étude est menée selon une méthode qualitative phénoménologique par entretiens semi-dirigés auprès de 23 personnes pendant et après les traitements.Résultats : Les différents environnements décrits par le modèle socio-écologique (micro, méso, macro) influencent le comportement d’AP des patients. Trois facilitateurs principaux sont mis en lumière : le bénéfice perçu de l’AP sur la santé, le soutien social, l’aménagement territorial. Trois barrières sont identifiables : (1) les troubles physiques et psychologiques en lien ou non avec la maladie et ses traitements, (2) la situation de précarité, les contraintes organisationnelles, l’environnement social peu favorable, (3) le manque de coordination, d’informations précises et d’orientation adaptées et réalistes vers les offres d’AP.Discussion : Diverses représentations, combinaison de facteurs, expériences vécues sont décrites. L’engagement et le maintien d’une AP pérenne des personnes atteintes de cancer est complexe et nécessite d’agir sur l’ensemble des facteurs socio-écologiques, de façon pluridisciplinaire

Evaluation of the Autistic Children Motor Skills: A Research Project Proposal

International audienceImitation is considered as a platform for interdisciplinary studies where social sciences, cognitive psychology, neurobiology and neurocybernetics interact, as well as clinical psychology. It is often used to explore various and several scientific fields but few works have investigated a series of linked successive motor actions. The current work aimed to study and expand the findings regarding which information subjects of different populations selected and included for reproducing demonstrated model actions. 120 children of 6 age groups divided between 3 years and 8 years, associated to autistic and deficient children were tested in this present study. This developmental scale completed, should provide a baseline for understanding in what type of constraints the autistic child would be specifically deficient in the management of his imitation. The comparison with mentally deficient children also seemed indispensable. The children's imitative responses were videotaped, coded in dichotomy data, and then put into percentage. Our expected goal is to characterize the traits of autistic motor skills in reference to normal and mentally deficient development

Role of anode material on the electrochemical oxidation of methyl orange

The anodic oxidation of methyl orange (MO, 5-(4-nitrophenylazo)salicylic acid) has been studied by cyclic voltammetry and bulk electrolysis, using a range of electrode materials such as Ti\u2013Ru\u2013Sn ternary oxide, lead dioxide and boron-doped diamond (BDD), glassy carbon (GC) and gold anodes. The results of voltammetries show that with all the electrode materials, in the potential region before oxygen evolution, the oxidation of MO involves simple electrode transfer that produces a polymeric film that deactivates the electrode surface, as confirmed by Fourier Transform Infrared Reflection-Absorption Spectroscopy (FTIRRAS) analysis. A very different behaviour was observed among the electrodes in the region of water decomposition. While BDD and PbO2 regained their initial activity by simple polarisation at 2.3 V vs. saturated calomel electrode (SCE) due to the production of high amount of hydroxyl radicals that destroy the polymeric film, TiRuSnO2, GC and gold cannot be completely reactivated, because they have a low overpotential for oxygen evolution, and this secondary reaction is favoured over polymer mineralization. The results of bulk electrolysis showed that after 3 h of polarisation at 10 mA cm 122, complete colour and chemical oxygen demand (COD) removal were obtained only with BDD anode. Using PbO2 MO was oxidised but a residual COD remains in the solution, while TiRuSnO2 permitted only a partial oxidation of MO

Direct and indirect electrochemical oxidation of Indigo Carmine using PbO2and TiRuSnO2

In this paper, the electrocatalytic properties of PbO2and TiRuSnO2anodes for direct and indirect electrochemical oxidation of a synthetic solution containing Indigo Carmine (IC) were compared. The electrolysis was performed using an electrolytic flow cell with parallel-plate electrodes and the progresses of oxidation were monitored by UV-vis and COD measurements. The effects of several operating parameters such as electrode material, current intensity, initial dye concentration, and pH on the degradation rate and current efficiency were determined. Some economic considerations were also taken into account. With both electrodes, IC removal was satisfactory described by a pseudo-first-order kinetic and the rate constant increased with applied current, chloride concentration and decreased with initial IC concentration. During direct electrolysis, PbO2provided a faster oxidation rate, higher current efficiency, and lower energy consumption than TiRuSnO2anode. On the contrary, in the presence of 825\uc2\ua0ppm of NaCl, the TiRuSnO2anode that has higher electrocatalytic activity for chlorine evolution was more efficient than PbO2

Complete removal of AHPS synthetic dye from water using new electro-fenton oxidation catalyzed by natural pyrite as heterogeneous catalyst

The mineralization of a new azo dye - the (4-amino-3-hydroxy-2-p-tolylazo-naphthalene-1-sulfonic acid) (AHPS) - has been studied by a novel electrochemical advanced oxidation process (EAOP), consisting in electro-Fenton (EF) oxidation, catalyzed by pyrite as the heterogeneous catalyst - the so-called 'pyrite-EF'. This solid pyrite used as heterogeneous catalyst instead of a soluble iron salt, is the catalyst the system needs for production of hydroxyl radicals. Experiments were performed in an undivided cell equipped with a BDD anode and a commercial carbon felt cathode to electrogenerate in situ H2O2 and regenerate ferrous ions as catalyst. The effects on operating parameters, such as applied current, pyrite concentration and initial dye content, were investigated. AHPS decay and mineralization efficiencies were monitored by HPLC analyses and TOC measurements, respectively. Experimental results showed that AHPS was quickly oxidized by hydroxyl radicals (OH) produced simultaneously both on BDD surface by water discharge and in solution bulk from electrochemically assisted Fenton's reaction with a pseudo-first-order reaction. AHPS solutions with 175mgL-1 (100mgL-1 initial TOC) content were then almost completely mineralized in 8h. Moreover, the results demonstrated that, under the same conditions, AHPS degradation by pyrite electro-Fenton process was more powerful than the conventional electro-Fenton process