La pratique d’activité physique est aujourd’hui encouragée pour améliorer l’état de santé de la population. Le report modal de l’automobile vers les modes actifs constitue à ce titre un enjeu de santé publique, mais les connaissances restent encore limitées quant aux leviers d’action permettant d’atteindre cet objectif. Dans cette thèse, nous adoptons une approche transdisciplinaire s’appuyant sur des connaissances issues de la géographie et des sciences humaines et sociales pour proposer une charpente théorique permettant de comprendre les comportements de mobilité active au niveau individuel. Cette charpente, développée dans un but opérationnel a été testée et opérationnalisée à l’aide de méthodes qualitatives et quantitatives pour être ensuite appliquée à l’analyse des déterminant des comportements de mobilité dans le département du Bas-Rhin (France). Ces analyses nous ont permis de relativiser l’influence des facteurs environnementaux sur la mobilité active. / Physical activity is now encouraged to improve the populations health status. The modal shift from automobile to active modes is therefore a public health issue. But knowledge is still limited concerning the way to achieve this goal. In this thesis, we adopt a transdisciplinary approach based on geography and human and social sciences to build a theoretical framework to understand active mobility behaviors for an operational purpose. This framework was tested and operationalized using qualitative and quantitative methods and then applied to analyze mobility behaviors in the Bas-Rhin department (France). Based on these results, we appraised the influence of environmental factors on active mobility.

The study was designed to initially determine levels of moderate-to-vigorous physical activity (MVPA) occurring during physical education in 11-12 year olds using appropriate objective methods. Subsequently, the potential of a pedagogical method; ‘teaching games for understanding’ to increase PA levels and self determined motivation during PE lessons, and habitual physical activity during leisure time was examined. The most reliable and valid PA measurement tool for the chosen age group was the RT3 ® triaxial accelerometer. PA levels during PE lessons fell short of the recommended 50% (20 minute) criterion, with children accumulating 16.4 ± 2.3 minutes (44.9 ± 5.6%) of mean MVPA during lesson time. Seven day habitual activity monitoring revealed that time spent in MVPA on a PE day was significantly higher (P <0.05) than on a weekend day. This study also highlighted that on non PE days the lack of PE-related activity was not compensated by engagement in other activity. An investigation into the effects of a 12 week TGfU pedagogical strategy on MVPA and elements of Self Determination Theory during PE lessons revealed that boys assigned to the intervention displayed significantly higher (P <0.01) levels of MVPA, and significantly higher levels of autonomy (P < 0.05) post-intervention versus the control group. In addition, a non significant trend for an increase in habitual PA for boys assigned to the intervention lessons was revealed. No significant differences were displayed in the constructs of the TPB pre-post intervention and no significant benefits of TGfU were noted for girls. The reported increases in MVPA and levels of autonomy during PE lessons in boys using a TGfU approach are novel and promising. However it is suggested that future research incorporates such strategies in a health-promoting PE environment in addition to the traditional skills-based activities. This may have potential in enhancing MVPA during PE in girls and boys, and may promote greater transference to habitual physical activity levels. The potential for self determined environments positively impacting upon motivation and intentions to be physically active both during and outside of PE lessons warrants further exploration but over longer time periods.

Parallèlement aux adaptations cardiovasculaires et neuromusculaires, les exercices mono-articulaires ou locomoteurs peuvent induire des changements neuroplastiques de muscles impliqués ou non dans l’exercice. Si l’effet de paramètres de l’exercice, comme l’intensité ou la durée, sur les changements neuroplastiques ont déjà été étudiés, l’effet du mode de contraction musculaire reste, quant à lui, moins connu. L’objectif de cette thèse a été d’évaluer les effets du mode de contraction musculaire sur les changements neuroplastiques consécutifs à un exercice locomoteur ou mono-articulaire. La première étude a montré que l’augmentation de l’excitabilité corticospinale d’un muscle non-impliqué dans l’exercice (muscle de la main), observée suite à un exercice de marche/ course, n’était pas modulée par le mode de contraction des muscles extenseurs du genou. En revanche, une modulation spécifique des réseaux intracorticaux par le mode de contraction impliqué lors d’un exercice a été mise en évidence par l’application d’un protocole de stimulation associative jumelée. Des observations similaires ont été faites dans une seconde étude investiguant les changements corticospinaux observés au niveau des muscles extenseurs du genou impliqués dans des exercices mono-articulaires fatigants, effectués dans un mode de contraction concentrique ou excentrique. Une troisième étude a montré que pour un exercice de marche/ course réalisé à même fréquence cardiaque en montée, à plat ou en descente, la modalité en descente induisait une fatigue musculaire des extenseurs du genou plus importante, avec des altérations contractiles plus marquée. La quatrième étude a montré que seule la modalité en descente induisait une augmentation de l’excitabilité corticospinale, et une réduction de l’inhibition corticale des muscles extenseurs du genou. Les travaux de cette thèse proposent que le mode de contraction musculaire lors d’un exercice n’est, en lui-même, pas un facteur prépondérant des changements neuroplastiques observés pour des muscles impliqués dans l’exercice. Ces changements neuroplastiques seraient au contraire dépendant de la magnitude de la fatigue neuromusculaire induite, elle-même dépendante du mode de contraction musculaire. / Along with cardiovascular and neuromuscular changes, mono-articular and locomotor exercises may induced neuroplastic changes from muscles involved, or non-involved, in the exercise. If the effect of exercise intensity or duration on neuroplastic changes has been previously investigated, the effect of the mode of muscle contraction remains unclear. The aim of this thesis was to investigate the effects of the mode of muscle contraction on neuroplastic changes induced a locomotor or a single-joint exercise. The first study showed that the increase in the corticospinal excitability of a non-exercised hand muscle, observed after a walking/ running exercise, was not modulated by the knee extensors mode of muscle contraction. However, a specific modulation of the intracortical networks by the mode of muscle contraction was evidenced using a paired-associative stimulation protocol. Similar findings were made in a second study that investigated corticospinal changes in the knee extensors following a fatiguing single-joint exercise, performed in either a concentric or an eccentric mode of muscle contraction. A third study showed that for a walking/ running exercise performed at the same heart rate in either a inline, a level or a decline condition, the latter condition induced a greater magnitude of neuromuscular fatigue of the knee extensors, with greater contractile impairments. The fourth study reported that only a decline exercise induced an increase in the corticospinal excitability, and a reduction of the cortical inhibition of the knee extensors. Altogether, findings from this thesis suggest that the mode of muscle contraction during an exercise is not, per se, a main factor responsible for neuroplastic changes observed in exercised muscles. Rather, these changes may depend upon the magnitude of neuromuscular fatigue induced, which could depend upon the mode of muscle contraction involved during exercise.

The acute effects of exercise on appetite, ad libitum energy intake and gut hormone responses have received much attention over the past two decades. The experiments in this thesis have contributed to this research by examining appetite, acylated ghrelin, peptide-YY (PYY), leptin and ad libitum energy intake responses to two consecutive days of moderate-high intensity running. To achieve this 15 individuals aged 21 (2) y, with a BMI of 23.0 (1.9) kg·m-2 were recruited. Additionally, appetite, acylated ghrelin, PYY, glucagon-like peptide-1 (GLP-1), and ad libitum energy intake responses to an acute bout of moderate intensity treadmill exercise were compared in lean and overweight/obese (ow/ob) males and females. Two separate cohorts of individuals were recruited; 22 lean individuals and 25 ow/ob individuals (aged 38 (15) and 45 (12) y, with a BMI of 22 (2) and 29 (3) kg·m 2, for lean and ow/ob individuals, respectively). In Chapter 4, two consecutive days of 60 min treadmill running at 70% VO₂ peak did not produce compensatory changes in appetite or energy intake over two days. There were no main effects of trial for acylated ghrelin or leptin. However a main effect of trial for PYY indicated higher concentrations on the exercise than control trial. A meta-analysis was completed in Chapter 5, suggesting further research in the effects of acute exercise on appetite regulatory hormones in individuals who are ow/ob was necessary. In Chapter 6, 60 min of treadmill exercise at 60% VO₂ peak did not alter appetite sensations or energy intake in the 7 h after exercise in lean and ow/ob males and females. There were no main effects of sex, BMI or trial for acylated ghrelin; however, PYY and GLP-1 concentrations were higher in exercise than control trials. This thesis has demonstrated that over two days, high volume exercise does not stimulate compensatory appetite regulatory changes, in lean healthy males. In the short term, lean and ow/ob males and females respond similarly to acute exercise, showing no alterations in appetite or food intake responses, whilst PYY and GLP-1 concentrations are higher in exercise than control trials.

Current methods of energy restriction are not successful for achieving long-term weight loss and maintenance for the majority of individuals. As a result, the prevalence of obesity and obesity related diseases continue to increase. This calls for the development of novel lifestyle interventions to combat the obesity epidemic. Hunger has been highlighted as a major factor influencing the long-term success of weight management methods and therefore how a given dietary intervention affects the appetite regulatory system may dictate the success of the diet by augmenting long-term adherence. In addition, the effect of a given dietary intervention on exercise may determine its suitability for exercising individuals and may influence the energy deficit that can be achieved by the diet. This thesis investigated the acute effects of two novel methods of dietary restriction; breakfast omission and severe energy restriction. The main aims for this thesis were to determine the effect of these methods of energy restriction on ad-libitum energy intake, subjective appetite sensations, and peripheral concentrations of hormones involved in appetite regulation. In addition, this thesis also investigated the effects of these methods of energy restriction on metabolism and glycaemic control at rest, and performance and perceived exertion during exercise. This work found that moderate and severe energy deficits induced by breakfast omission and 24 h of severe energy restriction, respectively, resulted in either no (Chapter VIII) or partial (Chapters IV and VII) energy intake compensation over the subsequent 24-48 h. Subjective appetite was increased during (Chapters IV, V, VII and VIII) and shortly after (Chapter VII) energy restriction, but this effect was transient and was offset after an ad-libitum (Chapters IV and VII) or standardised (Chapters V and VIII) meal. In addition, none of the work presented in this thesis demonstrated an appetite hormone response to energy restriction that was indicative of compensatory eating behaviour. Compared to breakfast omission, breakfast consumption resulted in an increased in resting energy expenditure and carbohydrate oxidation, with a concurrent reduction in fat oxidation during the morning. However, there were no differences after lunch (Chapter V). In response to a standardised breakfast, resting energy expenditure was suppressed (Chapter VII) or not different (Chapter VIII) the following morning, after 24 h severe energy restriction compared to energy balance. Plasma NEFA and fat oxidation was greater, carbohydrate oxidation was reduced, and postprandial insulin sensitivity was impaired in the after 24 h severe energy restriction (Chapter VI, VII and VIII). In Chapter IV, omission of breakfast in the morning was shown to reduce exercise performance in evening, even after provision of an ad-libitum lunch 4 h before. However, there was no difference in perception of effort during steady state exercise, independent of breakfast consumption or omission in the morning (Chapters IV and V). Collectively, breakfast omission and 24 h severe energy restriction reduce energy intake and promote an appetite regulatory response conducive to maintenance of a negative energy balance. Chronic intervention studies are now required to confirm whether these effects persist after long-term practice of these dietary interventions.

Regular physical activity reduces the risk of many chronic diseases. Consequently, the promotion of it and particular types (e.g. walking and cycling for travel), have become a priority for governments seeking to improve health and constrain rising demand on health services. Despite this many uncertainties persist. The aim of this thesis is to address two particular areas of uncertainty: a) the association of walking and cycling for travel with indices of health and well-being; b) and the extent to which increases in physical activity will reduce need for health and social care. The first part of my thesis consists of three studies that describe the health benefits associated with walking and cycling to work among working age adults. The first is a longitudinal study of the associations between maintenance of active commuting with sickness absence and well-being using the Commuting and Health in Cambridge dataset. The second, using the same dataset, describes the longitudinal associations between maintenance of active commuting and self-reported body mass index. Building on this, the third study using a large cohort study (the Fenland Study) with detailed characterisation of diet and physical activity (including objective measurement) describes the baseline associations between active commuting and objective measures of adiposity. The second part of my thesis describes the development of a combined microsimulation multi-state life table model that is used to characterise the effects of a population ‘shift’ in physical activity on the burden of six major diseases at the population-level. Specifically, it seeks to better describe the effect of increases in physical activity on healthcare need considering not just the effect of physical activity on disease incidence but also the effect on healthcare need arising from consequent survival to an older age (at which disease incidence is higher), and contrasts this with a method that does not make allowance for increased survival. The findings of this thesis provide evidence of the importance of walking or cycling to work in maintaining or improving the health and well-being of working age adults. It suggests that increases in physical activity, even after allowance for increased survival, are likely to reduce need for healthcare, although the reductions in need are less than might be assumed when allowance is not made for increased survival. Taken together this work provides a stronger empirical basis to inform public health practice. A stronger ‘health case’ for active travel can be made. The benefits of which should be communicated to individuals choosing how to travel as well as policy makers and others who can influence the determinants of active travel. It also provides a more realistic and nuanced understanding of how increases in physical activity may affect future healthcare need.

L’optimisation de la performance oblige l’athlète à répéter des séances d’entraînement à haute intensité de travail avec peu de récupération, ce qui génère une fatigue neuromusculaire qui peut être préjudiciable. Ainsi, dans le but de limiter ce phénomène et d’améliorer l’efficacité des séances d’entraînement, le choix d’une récupération adéquate s’impose.La récupération active est la méthode la plus connue et la plus efficace relatée dans la littérature. En effet, de nombreuses études démontrent son effet bénéfique sur la fatigue provoquée lors d’exercices globaux (types course ou pédalage). Cette modalité de récupération correspond à un exercice musculaire léger permettant une augmentation du flux sanguin périphérique et une élimination plus rapide des métabolites. A l’heure actuelle, peu d’études se sont intéressées à la récupération active appliquée de manière locale pour des exercices de renforcement de groupes musculaires spécifiques.L’objectif de ce travail était donc d’étudier la méthode la plus efficace, en termes de modalité et de moment d’application, pour récupérer la force maximale de l’athlète lors d’un exercice de renforcement musculaire. De plus, afin d’assurer une application de cette récupération active, spécifiquement sur les groupes musculaires souhaités, nous avons utilisé l’électromyostimulation (EMS).Nos différents résultats suggèrent qu’il n’est pas nécessaire d’appliquer une modalité particulière pour la récupération des exercices de renforcement musculaire réalisés à intensité maximale. En effet, la récupération active par EMS appliquée au cours d’une séance (entre les séries) ou après une séance ne montre pas de différence avec une récupération passive. De plus, l’application proximale ou distale de l’EMS n’a pas d’influence sur la cinétique de récupération. L’approche neuromusculaire de la fatigue, montre cependant, qu’il s’avère nécessaire d’analyser l’origine des perturbations engendrées par l’exercice, afin de choisir la modalité de récupération la mieux adaptée / The high frequency of resistance training sessions induces heavy strain and fatigue phenomenon, which could be prejudicial for subsequent performance. In this context, it appears necessary to apply proper recovery strategies in order to improve the athlete’s ability to regain an adequate working state for subsequent training.Active recovery is widely described in the literature as the most efficient method for this purpose. It consists in low-intensity exercises, which could improve metabolites washout by increasing peripheral blood flow. To our knowledge, active recovery is usually applied globally, with exercises involving the whole body (light pedalling or running) but little is known regarding a local application after analytical exercises such as strengthening exercise. The aim of our research was therefore to determine the most effective method to recover from resistance training session in terms of maximal strength performance. Among the active recovery modes, electromyostimulation (EMS) is of particular interest since it can be applied on specific muscles groups. Our results showed that active recovery using EMS applied during a session (between the sets) or after a session, did not demonstrate any difference as compared with passive recovery. Also, we demonstrated that EMS was not more efficient when applied distally. However, we highlighted that the investigation of neuromuscular parameters is necessary to better understand the origin of the fatigue induced by a specific exercise in order to apply the most appropriated recovery mode

Research has shown that people who participate in regular physical activity (PA) can experience improved wellbeing and quality of life, including better physical health, cognitive function, positive affect, and self-esteem (Fox, 1999). Such benefits support the application of PA as a strategy to improve the general population's mental health and those recovering from mental illness. However, the contemporary understanding of PA and the recovery from mental illness is almost exclusively underpinned by the principles of clinical recovery (e.g. symptom remission), which can overlook the patient's values. Conversely, personal recovery may reconnect people with their inner resources, personal strengths, and offer opportunities for people to reconstruct hope, meaning, responsibility and a positive identity as part of recovery (Slade, 2009). These values also mark a shift in the UK Government's (2011a) mental health strategy, toward integrating personal recovery as part of people's mental health care. Yet, few studies have examined the role of PA within the context of personal recovery, including the impact of PA on the wider elements of personal recovery. Accordingly, this thesis sets out to examine the role of PA during the personal recovery from mental illness, as a case study at a voluntary sector mental health organisation. The research methodology was guided by social constructivism, and data was collected between October 2010 and June 2014 using participant-observations, semi-structured interviews, focus groups and photo elicitation methods. Seven members of staff and twenty-two attendee's volunteered to participate in the research study, and their accounts were analysed thematically (Braun & Clarke, 2006) using NVivo to manage and aid the data analysis. Additionally, effort was made to satisfy the authenticity criteria throughout the research to maintain constructivist rigour (Lincoln & Guba, 2013). The research findings identified six high-ordered themes that indicate a process of personal recovery through PA. These were (a) 'Battles against the mind', (b) 'the centre as a place of refuge and support', (c) 'exercise is one part of the whole package', (d) 'the connection between body and mind', (e) 'my gateway onto other things', and (f) 'from small acorns to big oak trees'. These findings were congruent with the existing literature, and added that PA participation can support people's meaningful engagement in their personal medicines and other life events (e.g. employment, being with family, and relationship with pets). The findings are discussed in relation to the delivery of PA in mental health services, the relationship of PA with meaningful activities during recovery, and the impact of PA on elements of hope, meaning, positive identity, and personal responsibility. The thesis concludes with a guiding standpoint on the application of PA for personal recovery as a personal medicine or as an adjunct activity. This standpoint can be used to inform the general population, mental health and exercise professionals, multiagency mental health service staff and attendees, commissioning bodies and policymakers.

Les espèces réactives de l’oxygène (ERO) contrôlent plusieurs aspects de la carcinogenèse, étant donné leur capacité àpromouvoir la prolifération mais aussi à induire la sénescence et l’apoptose. Dans les stades avancés de cancer, les EROpeuvent également participer au développement de l’atrophie musculaire, engendrant une détérioration de la qualité de viedes patients. L’activité physique (AP), connue pour augmenter les défenses antioxydants de l’organisme et lasupplémentation en antioxydants sont considérées comme deux stratégies susceptibles de moduler la croissance tumorale, d’améliorer la performance physique et de réduire les effets secondaires liés à la maladie et aux traitements anticancéreux. Néanmoins, plusieurs questions restent aujourd’hui sans réponse. En effet, bien que l’AP puisse réduire la progression du cancer du sein, du colon et de la prostate, son impact sur les cancers se développant au sein du muscle (ex : le liposarcome), donc soumis aux contractions musculaires répétées, reste méconnu. En utilisant des approches in vivo et in vitro, nous avons démontré que maintenir une AP régulière accélère la croissance du liposarcome intramusculaire, probablement, via la réduction des taux circulants d’insuline et l’inhibition de la voie « P38 MAPK-P21 ». Pour les patients ne pouvant pas pratiquer d’AP, la consommation d’antioxydants pourrait être un moyen de réduire les ERO tumorales et musculaires et ainsi être prometteuse. Toutefois, les études actuelles restent très controversées. Nos travaux ont montré dans un modèle murin de cachexie cancéreuse que des doses nutritionnelles d’un produit antioxydant commercialisé en France, étaient suffisantes pour accélérer la croissance de la tumeur colique, favoriser la perte de masse corporelle totale et musculaire et engendrer la mort prématurée des souris. L’ensemble de nos résultats suggère que la pratique d’AP et la consommation en antioxydants peuvent induire des effets différents selon le type de tumeur et leur implantation, nécessitant une prise en charge individualisée des patients. En effet, (1) les patients atteints d’un LS intramusculaire devraient éviter de pratiquer une AP durant la période préopératoire mais ces résultats doivent être confirmés par une étude clinique, (2) les patients avec un stade avancé de cancer devraient être vigilants quant à l’utilisation de suppléments antioxydants ; une telle pratique pouvant avoir des répercussions dangereuses sur leur santé. / Reactive oxygen species (ROS) control several aspects of carcinogenesis as they can either promote tumor growth andprogression or senescence and apoptosis. In advanced stages of cancer, ROS can also drive the development of other cancerrelated complications like, muscle wasting. Physical activity (PA) and antioxidant supplementation have been proposed as two adjuvant strategies to better control tumor growth, ameliorate performance and alleviate secondary symptoms related to cancer itself or to the heavy anticancer therapies. However, several issues remain to be elucidated. First of all, although PA could reduce colon, breast and prostate cancer growth and progression, its impact remains unknown on orthotopic intramuscular tumors like liposarcoma, which directly affect the musculoskeletal apparatus and reduce physical function. Secondly, given the limitedness of PA application in some advanced stages of cancer, patients may increase their dependency on nutritional and antioxidant complements as an alternative strategy, but such practice has spark a lot of polemic and inconsistent results. In this thesis, we have addressed the effectiveness of PA and antioxidants in two distinct animal models of cancer. Using in vivo and in vitro approaches, we found that voluntary PA accelerated the growth of intramuscular liposarcoma tumors and exacerbated skeletal muscle dysfunction, mainly, by decreasing circulating insulin levels and the subsequent activation of the tumor suppressor pathway “P38 MAPK-P21”. We also demonstrated that nutritional doses of commercial antioxidants enhanced colon tumor growth, total body/skeletal muscle weight loss and caused premature death of mice. Such mechanism was due to selective changes in oxidative damage profiles, which decreased in tumor but increased in skeletal muscle, in a way driving tumor growth and skeletal muscle wasting/dysfunction. Clinically, it seems that (1) patients with intramuscular liposarcoma may, at least, not increase their levels of PA or undergo hospital-supervised exercise program, during the preoperative period; until the confirmation of our findings with clinical data and (2) patients with advanced stages of cancer must be very careful against the use of antioxidants as it could lifethreatening. Accordingly, health agencies in France, Europe and USA prohibit the use of synthetic antioxidant supplements without dietary counseling by a cancer patient’s physician and/or nutritionist.

En France, l’Educations Physique et Sportive, scolarise les activités physiques sportives et artistiques, par un processus de « didactisation » et les utilise pour proposer des situations d’enseignement/apprentissage, qui donnent un statut aux corps de l’élève et de l’enseignant. Cette visée éducative de l’expérience d’un rapport vécu à la motricité interroge les usages des TIC, singulièrement dans un espace et un temps scolaire. La manipulation de ces artefacts technologiques est perçue comme une activité intellectuelle, relevant de la motricité fine, ne nécessitant pas un engagement corporel et une dépense énergétique comparable aux pratiques physiques de référence; pourtant les usages des TICE viennent redéfinir le rapport entre corps vivant et corps virtuel dans une EPS 2.0. Nous tentons de démontrer que les enseignants d’EPS définissent des usages disciplinaires des TICE et qu’ils accompagnent les évolutions technologiques, dans les domaines de l’audiovisuel et de la micro-informatique. Grâce à deux enquêtes menées auprès des enseignants d’EPS de l’Académie de Nancy-Metz et à une étude des dispositifs utilisés et des documents publiés, nous décrivons ces usagers et l’évolution de leurs usages des TICE. L’évolution des dispositifs et des interfaces disponibles autorisent, de plus en plus, leur intégration justifiée au sein même du cours. Néanmoins, ces pratiques relèvent d’une démarche volontariste des enseignants, encore considérée comme innovante et expérimentale. La formation initiale et continue des enseignants et la capitalisation des acquis de leur expérience devraient donc, aujourd’hui, constituer une priorité pour l’institution scolaire et ses acteurs. / In France, Physical Education sets up in school organized sports and physical, artistic activities, using a didactic process to provide teaching situations and educational activities which give a status to the body of the students and of the teacher too. This educational purpose aims to test/experiment a total body experience and PE teachers have to wonder about/be asked about the uses of ICT especially in a space/time school context. The manipulation/handling of these technological artefacts is viewed/considered as fine motor skills without physical exertion and energy expenditure comparable to sport and physical activity however uses of ICT with technological changes come in and redefine the relationship between living body and virtual body that we are proposing to name “PE 2.0”. This research work aims to demonstrate that PE teachers have been defining uses of ICT for their school subject for many years and respond to technological developments especially in the broadcasting and computing technologies. Based on the results of two surveys led with the PE teachers of the regional education authority (Nancy-Metz Academy) and a review of existing writing and used devices, we describe these users and the evolution of their uses/practices. The evolution of devices and available interfaces allows to include them more than in the past during lessons. But the PE teachers who use them take a proactive approach and their practices are still considered as innovative and experimental. Thus, the initial formation and continuous training of the teachers and the compilation/collection of their experience thus should must be, today, a priority for the school institutional stakeholders.