{"id":{"repo_id":"sherbrooke","oai_identifier":"oai:usherbrooke.scholaris.ca:11143/13331"},"canonical_url":"https://search.dev.ndltd.org/etd/sherbrooke/oai:usherbrooke.scholaris.ca:11143/13331","repository":{"repo_id":"sherbrooke","name":"Université de Sherbrooke","base_url":"https://usherbrooke.scholaris.ca/server/oai/request"},"display":{"title":"Interférence cognitivo-motrice chez les personnes atteintes de sclérose en plaques","abstract":"A thesis presented to the Faculty of Medicine and Health Sciences in partial fulfillment of the requirements of the degree of Master of Science in Health sciences, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada, J1H 5N4 Background: Multiple sclerosis (MS) is a neurodegenerative disease which is associated with cognition and balance disorders. It is established that postural control requires congnitive resources and it’s possible to evaluate this interaction by using the dual-task paradigm (DT). Few studies have examined the effect of DT through the dual task cost (DTC) in people with MS. Specifically, the objectives of this thesis were to 1) determine the DTC of two tasks under different postural conditions in people with MS and in healthy individuals, and 2) explore different parameters of postural control performance and cognition by means of different clinical tests and questionnaires. Methods: One group of MS (n = 22) and healthy controls (n = 22) were matched according to age, gender and level of education for this cross-sectional study. Each participant had to perform a static balance task in three different positions (seated, standing and tandem) and a choice reaction time in single task (ST) and DT. The mean sway velocity, medio-lateral sway, antero-posterior sway and reaction time were calculated for each condition. In addition, both groups underwent the Montreal Cognitive Assessment, Fullerton Advanced Balance Scale, Falls Efficacy Scale-International and Fatigue Scale for Motor and Cognitive Functions. Results: A repeated measures ANOVA showed there were no effect or interaction for the DTC variables between the two groups (p < 0.05). However, the MS group showed a motor task prioritization, while the healthy group demonstrated mutual facilitation in both tasks in a DTC model. The healthy group had faster reaction times than the MS group. A Group*Posture*Vision interaction was detected, but no effect of task was noted. MS subjects had better balance than healthy participants in tandem stance only (F(1,40) = 15.95, p < 0.05). The MS group was also moderately fatigued (p < 0.01) and concerned about the risk of falling (p < 0.01) compared to healthy group. Conclusion: DTC was not significantly different between the two groups. However, it is possible to distinguish different patterns of attentional demands between both groups. Furthermore, the results suggest a difference of performance between both groups.","abstract_html":"A thesis presented to the Faculty of Medicine and Health Sciences in partial fulfillment of the requirements of the degree of Master of Science in Health sciences, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada, J1H 5N4 Background: Multiple sclerosis (MS) is a neurodegenerative disease which is associated with cognition and balance disorders. It is established that postural control requires congnitive resources and it’s possible to evaluate this interaction by using the dual-task paradigm (DT). Few studies have examined the effect of DT through the dual task cost (DTC) in people with MS. Specifically, the objectives of this thesis were to 1) determine the DTC of two tasks under different postural conditions in people with MS and in healthy individuals, and 2) explore different parameters of postural control performance and cognition by means of different clinical tests and questionnaires. Methods: One group of MS (n = 22) and healthy controls (n = 22) were matched according to age, gender and level of education for this cross-sectional study. Each participant had to perform a static balance task in three different positions (seated, standing and tandem) and a choice reaction time in single task (ST) and DT. The mean sway velocity, medio-lateral sway, antero-posterior sway and reaction time were calculated for each condition. In addition, both groups underwent the Montreal Cognitive Assessment, Fullerton Advanced Balance Scale, Falls Efficacy Scale-International and Fatigue Scale for Motor and Cognitive Functions. Results: A repeated measures ANOVA showed there were no effect or interaction for the DTC variables between the two groups (p &lt; 0.05). However, the MS group showed a motor task prioritization, while the healthy group demonstrated mutual facilitation in both tasks in a DTC model. The healthy group had faster reaction times than the MS group. A Group*Posture*Vision interaction was detected, but no effect of task was noted. MS subjects had better balance than healthy participants in tandem stance only (F(1,40) = 15.95, p &lt; 0.05). The MS group was also moderately fatigued (p &lt; 0.01) and concerned about the risk of falling (p &lt; 0.01) compared to healthy group. Conclusion: DTC was not significantly different between the two groups. However, it is possible to distinguish different patterns of attentional demands between both groups. Furthermore, the results suggest a difference of performance between both groups.","abstract_has_math":false,"creators":["Mallet, Mathieu"],"institution":"Université de Sherbrooke","degree_name":"M. Sc.","degree_level":"Maîtrise","degree_discipline":"Sciences cliniques","degree_department":null,"school":null,"contributors":[],"advisors":["Bélanger, Mathieu","Handrigan, Grant"],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018","date_published":"2018","updated_at":"2026-07-27T21:07:28Z","subjects":["Sclérose en plaques","Multiple sclerosis","Double tâche","Dual-Task","Coût de la double tâche","Dual-task cost","Posture","Cognition"],"languages":["fr"],"rights":[],"rights_urls":["http://creativecommons.org/licenses/by-nc-nd/2.5/ca/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11143/13331","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Bélanger, Mathieu","Handrigan, Grant"]},{"key":"dc:creator","label":"Author","values":["Mallet, Mathieu"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-08-20T19:19:10Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-08-20T19:19:10Z"]},{"key":"dc:date.issued","label":"Date","values":["2018"]},{"key":"dc:publisher","label":"Institution","values":["Université de Sherbrooke"]},{"key":"dc:type","label":"Dc Type","values":["Mémoire de maîtrise"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Sciences cliniques"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Maîtrise"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M. Sc."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Faculté de médecine et des sciences de la santé"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Sclérose en plaques","Multiple sclerosis","Double tâche","Dual-Task","Coût de la double tâche","Dual-task cost","Posture","Cognition"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["fr"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://creativecommons.org/licenses/by-nc-nd/2.5/ca/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11143/13331"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A thesis presented to the Faculty of Medicine and Health Sciences in partial fulfillment of the requirements of the degree of Master of Science in Health sciences, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada, J1H 5N4 Background: Multiple sclerosis (MS) is a neurodegenerative disease which is associated with cognition and balance disorders. It is established that postural control requires congnitive resources and it’s possible to evaluate this interaction by using the dual-task paradigm (DT). Few studies have examined the effect of DT through the dual task cost (DTC) in people with MS. Specifically, the objectives of this thesis were to 1) determine the DTC of two tasks under different postural conditions in people with MS and in healthy individuals, and 2) explore different parameters of postural control performance and cognition by means of different clinical tests and questionnaires. Methods: One group of MS (n = 22) and healthy controls (n = 22) were matched according to age, gender and level of education for this cross-sectional study. Each participant had to perform a static balance task in three different positions (seated, standing and tandem) and a choice reaction time in single task (ST) and DT. The mean sway velocity, medio-lateral sway, antero-posterior sway and reaction time were calculated for each condition. In addition, both groups underwent the Montreal Cognitive Assessment, Fullerton Advanced Balance Scale, Falls Efficacy Scale-International and Fatigue Scale for Motor and Cognitive Functions. Results: A repeated measures ANOVA showed there were no effect or interaction for the DTC variables between the two groups (p < 0.05). However, the MS group showed a motor task prioritization, while the healthy group demonstrated mutual facilitation in both tasks in a DTC model. The healthy group had faster reaction times than the MS group. A Group*Posture*Vision interaction was detected, but no effect of task was noted. MS subjects had better balance than healthy participants in tandem stance only (F(1,40) = 15.95, p < 0.05). The MS group was also moderately fatigued (p < 0.01) and concerned about the risk of falling (p < 0.01) compared to healthy group. Conclusion: DTC was not significantly different between the two groups. However, it is possible to distinguish different patterns of attentional demands between both groups. Furthermore, the results suggest a difference of performance between both groups.","Problématique: La sclérose en plaques (SEP) est une maladie neurodégénérative qui apporte des problèmes au niveau de la cognition et de l’équilibre. D’ailleurs, il est établi que le contrôle postural nécessite des ressources cognitives. Une manière d’évaluer cette interaction est d’utiliser le paradigme de la double tâche (DT). De ce fait, peu d’études ont examiné l’effet d’une DT par l’entremise du coût de la double tâche (DTC) chez les personnes atteintes de SEP. Les objectifs de cette étude sont donc de 1) Déterminer les DTC de deux tâches dans différentes conditions posturales chez des participants atteints de SEP et des personnes asymptomatiques, et 2) examiner différents paramètres de la performance du contrôle posturale et la cognition par l’intermédiaire de différents tests et questionnaires cliniques. Méthodes: Un groupe de participants atteints de la SEP (n=22) et un groupe témoin composé de personnes asymptomatiques (n=22) appariées par l’âge, le genre et le niveau de scolarité ont été utilisés comme participants pour cette étude transversale. Chaque participant devait performer une tâche d’équilibre statique dans trois conditions posturales différentes (assis, debout et tandem) et une tâche cognitive de temps de réaction de choix en simple tâche (ST) et en DT. La moyenne de vitesse, de l’étendue médio-latérale, de l’étendue antéro-postérieure, le temps de réaction et le DTC ont été calculés. Les participants ont également effectué le Montreal Cognitive Assessment, Fullerton Advanced Balance Scale, Falls Efficacy Scale-International et le Fatigue Scale for Motor and Cognitive Functions. Résultats: Il n’y avait aucun effet ou interaction entre les variables du DTC pour les deux groupes (p > 0,05) selon un ANOVA à mesure répétés. Cependant, il était possible de voir une priorisation de la tâche motrice pour les participants du groupe SEP et une facilitation mutuelle dans les deux tâches pour le groupe Sain lors de la DT selon un modèle qui évalue le DTC. Pour la variable temps de réaction, le groupe Sain était plus rapide que le groupe SEP. Pour les trois variables de l’équilibre, il était possible de distinguer une interaction Groupe*Posture*Vision, mais aucun effet de tâche. Les participants du groupe SEP avaient un meilleur équilibre que le groupe Sain dans la condition tandem seulement (F(1,40) = 15.95, p < 0.05). Le groupe SEP était aussi atteint d’une fatigue modérée (p < 0,01) et d’une préoccupation par rapport au risque de chute (p < 0,01) comparé au groupe Sain où ce n’était pas le cas. Conclusion: Le DTC n’est pas différent de manière significative entre les deux groupes. Cependant, il est possible de distinguer différents cheminements de la demande attentionnelle entre les deux groupes. De plus, les résultats démontrent une différence de performance entre les deux groupes."]},{"key":"dc:title","label":"Title","values":["Interférence cognitivo-motrice chez les personnes atteintes de sclérose en plaques"]}]}],"canonical_facts":{"dc:contributor.advisor":["Bélanger, Mathieu","Handrigan, Grant"],"dc:creator":["Mallet, Mathieu"],"dc:date.accessioned":["2018-08-20T19:19:10Z"],"dc:date.available":["2018-08-20T19:19:10Z"],"dc:date.issued":["2018"],"dc:description.abstract":["A thesis presented to the Faculty of Medicine and Health Sciences in partial fulfillment of the requirements of the degree of Master of Science in Health sciences, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada, J1H 5N4 Background: Multiple sclerosis (MS) is a neurodegenerative disease which is associated with cognition and balance disorders. It is established that postural control requires congnitive resources and it’s possible to evaluate this interaction by using the dual-task paradigm (DT). Few studies have examined the effect of DT through the dual task cost (DTC) in people with MS. Specifically, the objectives of this thesis were to 1) determine the DTC of two tasks under different postural conditions in people with MS and in healthy individuals, and 2) explore different parameters of postural control performance and cognition by means of different clinical tests and questionnaires. Methods: One group of MS (n = 22) and healthy controls (n = 22) were matched according to age, gender and level of education for this cross-sectional study. Each participant had to perform a static balance task in three different positions (seated, standing and tandem) and a choice reaction time in single task (ST) and DT. The mean sway velocity, medio-lateral sway, antero-posterior sway and reaction time were calculated for each condition. In addition, both groups underwent the Montreal Cognitive Assessment, Fullerton Advanced Balance Scale, Falls Efficacy Scale-International and Fatigue Scale for Motor and Cognitive Functions. Results: A repeated measures ANOVA showed there were no effect or interaction for the DTC variables between the two groups (p < 0.05). However, the MS group showed a motor task prioritization, while the healthy group demonstrated mutual facilitation in both tasks in a DTC model. The healthy group had faster reaction times than the MS group. A Group*Posture*Vision interaction was detected, but no effect of task was noted. MS subjects had better balance than healthy participants in tandem stance only (F(1,40) = 15.95, p < 0.05). The MS group was also moderately fatigued (p < 0.01) and concerned about the risk of falling (p < 0.01) compared to healthy group. Conclusion: DTC was not significantly different between the two groups. However, it is possible to distinguish different patterns of attentional demands between both groups. Furthermore, the results suggest a difference of performance between both groups.","Problématique: La sclérose en plaques (SEP) est une maladie neurodégénérative qui apporte des problèmes au niveau de la cognition et de l’équilibre. D’ailleurs, il est établi que le contrôle postural nécessite des ressources cognitives. Une manière d’évaluer cette interaction est d’utiliser le paradigme de la double tâche (DT). De ce fait, peu d’études ont examiné l’effet d’une DT par l’entremise du coût de la double tâche (DTC) chez les personnes atteintes de SEP. Les objectifs de cette étude sont donc de 1) Déterminer les DTC de deux tâches dans différentes conditions posturales chez des participants atteints de SEP et des personnes asymptomatiques, et 2) examiner différents paramètres de la performance du contrôle posturale et la cognition par l’intermédiaire de différents tests et questionnaires cliniques. Méthodes: Un groupe de participants atteints de la SEP (n=22) et un groupe témoin composé de personnes asymptomatiques (n=22) appariées par l’âge, le genre et le niveau de scolarité ont été utilisés comme participants pour cette étude transversale. Chaque participant devait performer une tâche d’équilibre statique dans trois conditions posturales différentes (assis, debout et tandem) et une tâche cognitive de temps de réaction de choix en simple tâche (ST) et en DT. La moyenne de vitesse, de l’étendue médio-latérale, de l’étendue antéro-postérieure, le temps de réaction et le DTC ont été calculés. Les participants ont également effectué le Montreal Cognitive Assessment, Fullerton Advanced Balance Scale, Falls Efficacy Scale-International et le Fatigue Scale for Motor and Cognitive Functions. Résultats: Il n’y avait aucun effet ou interaction entre les variables du DTC pour les deux groupes (p > 0,05) selon un ANOVA à mesure répétés. Cependant, il était possible de voir une priorisation de la tâche motrice pour les participants du groupe SEP et une facilitation mutuelle dans les deux tâches pour le groupe Sain lors de la DT selon un modèle qui évalue le DTC. Pour la variable temps de réaction, le groupe Sain était plus rapide que le groupe SEP. Pour les trois variables de l’équilibre, il était possible de distinguer une interaction Groupe*Posture*Vision, mais aucun effet de tâche. Les participants du groupe SEP avaient un meilleur équilibre que le groupe Sain dans la condition tandem seulement (F(1,40) = 15.95, p < 0.05). Le groupe SEP était aussi atteint d’une fatigue modérée (p < 0,01) et d’une préoccupation par rapport au risque de chute (p < 0,01) comparé au groupe Sain où ce n’était pas le cas. Conclusion: Le DTC n’est pas différent de manière significative entre les deux groupes. Cependant, il est possible de distinguer différents cheminements de la demande attentionnelle entre les deux groupes. De plus, les résultats démontrent une différence de performance entre les deux groupes."],"dc:identifier.uri":["http://hdl.handle.net/11143/13331"],"dc:language.iso":["fr"],"dc:publisher":["Université de Sherbrooke"],"dc:rights.uri":["http://creativecommons.org/licenses/by-nc-nd/2.5/ca/"],"dc:subject":["Sclérose en plaques","Multiple sclerosis","Double tâche","Dual-Task","Coût de la double tâche","Dual-task cost","Posture","Cognition"],"dc:title":["Interférence cognitivo-motrice chez les personnes atteintes de sclérose en plaques"],"dc:type":["Mémoire de maîtrise"],"thesis:degree_discipline":["Sciences cliniques"],"thesis:degree_level":["Maîtrise"],"thesis:degree_name":["M. Sc."],"thesis:institution_name":["Faculté de médecine et des sciences de la santé"]},"updated_at":"2026-07-27T21:07:28Z"}