{"id":{"repo_id":"brock","oai_identifier":"oai:brocku.scholaris.ca:10464/10420"},"canonical_url":"https://search.dev.ndltd.org/etd/brock/oai:brocku.scholaris.ca:10464/10420","repository":{"repo_id":"brock","name":"Brock University","base_url":"https://brocku.scholaris.ca/server/oai/request"},"display":{"title":"Neuromuscular responses to an isometric force and position task during passive hyperthermia","abstract":"Mechanisms of central nervous system (CNS) impairment during hyperthermia are largely task-dependent. This thesis sought to compare neuromuscular responses of an isometric force and position task during passive hyperthermia, and the relative contributions of rectal (Tre) and skin (T ̅sk) temperature afferents. Surface electromyography (sEMG) was used to assess the electrical activity of the flexor carpi radialis (FCR) muscle during a force and position task. Twenty participants were passively heated from 37.1°C to 39.0°C Tre or thermal tolerance and then cooled back to 37.8°C using a liquid conditioning garment. Passive hyperthermia induced progressive increases in root-mean-square (RMS) amplitude, mean power frequency (MPF) and median power frequency (MDF) for the force task. No change was observed in the sEMG signal for the positon task with passive heating, yet RMS amplitude increased upon skin cooling. Discrepancies in the sEMG signal exist between isometric and dynamic tasks, and these changes are due to core and skin afferents, respectively.","abstract_html":"Mechanisms of central nervous system (CNS) impairment during hyperthermia are largely task-dependent. This thesis sought to compare neuromuscular responses of an isometric force and position task during passive hyperthermia, and the relative contributions of rectal (Tre) and skin (T ̅sk) temperature afferents. Surface electromyography (sEMG) was used to assess the electrical activity of the flexor carpi radialis (FCR) muscle during a force and position task. Twenty participants were passively heated from 37.1°C to 39.0°C Tre or thermal tolerance and then cooled back to 37.8°C using a liquid conditioning garment. Passive hyperthermia induced progressive increases in root-mean-square (RMS) amplitude, mean power frequency (MPF) and median power frequency (MDF) for the force task. No change was observed in the sEMG signal for the positon task with passive heating, yet RMS amplitude increased upon skin cooling. Discrepancies in the sEMG signal exist between isometric and dynamic tasks, and these changes are due to core and skin afferents, respectively.","abstract_has_math":false,"creators":["Coletta, Nico"],"institution":"Brock University","degree_name":"M.Sc. Applied Health Sciences","degree_level":"Masters","degree_discipline":"Faculty of Applied Health Sciences","degree_department":"Applied Health Sciences Program","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-09-21T19:33:27Z","date_published":"2016-09-21T19:33:27Z","updated_at":"2026-07-24T01:23:05Z","subjects":["neuromuscular","hyperthermia","force task","position task"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10464/10420","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Applied Health Sciences Program"]},{"key":"dc:creator","label":"Author","values":["Coletta, Nico"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2016-09-21T19:33:27Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2016-09-21T19:33:27Z"]},{"key":"dc:date.issued","label":"Date","values":["2016-09-21T19:33:27Z"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Faculty of Applied Health Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.Sc. 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This thesis sought to compare neuromuscular responses of an isometric force and position task during passive hyperthermia, and the relative contributions of rectal (Tre) and skin (T ̅sk) temperature afferents. Surface electromyography (sEMG) was used to assess the electrical activity of the flexor carpi radialis (FCR) muscle during a force and position task. Twenty participants were passively heated from 37.1°C to 39.0°C Tre or thermal tolerance and then cooled back to 37.8°C using a liquid conditioning garment. Passive hyperthermia induced progressive increases in root-mean-square (RMS) amplitude, mean power frequency (MPF) and median power frequency (MDF) for the force task. No change was observed in the sEMG signal for the positon task with passive heating, yet RMS amplitude increased upon skin cooling. Discrepancies in the sEMG signal exist between isometric and dynamic tasks, and these changes are due to core and skin afferents, respectively."]},{"key":"dc:title","label":"Title","values":["Neuromuscular responses to an isometric force and position task during passive hyperthermia"]}]}],"canonical_facts":{"dc:contributor.department":["Applied Health Sciences Program"],"dc:creator":["Coletta, Nico"],"dc:date.accessioned":["2016-09-21T19:33:27Z"],"dc:date.available":["2016-09-21T19:33:27Z"],"dc:date.issued":["2016-09-21T19:33:27Z"],"dc:description.abstract":["Mechanisms of central nervous system (CNS) impairment during hyperthermia are largely task-dependent. This thesis sought to compare neuromuscular responses of an isometric force and position task during passive hyperthermia, and the relative contributions of rectal (Tre) and skin (T ̅sk) temperature afferents. Surface electromyography (sEMG) was used to assess the electrical activity of the flexor carpi radialis (FCR) muscle during a force and position task. Twenty participants were passively heated from 37.1°C to 39.0°C Tre or thermal tolerance and then cooled back to 37.8°C using a liquid conditioning garment. Passive hyperthermia induced progressive increases in root-mean-square (RMS) amplitude, mean power frequency (MPF) and median power frequency (MDF) for the force task. No change was observed in the sEMG signal for the positon task with passive heating, yet RMS amplitude increased upon skin cooling. Discrepancies in the sEMG signal exist between isometric and dynamic tasks, and these changes are due to core and skin afferents, respectively."],"dc:identifier.uri":["http://hdl.handle.net/10464/10420"],"dc:language.iso":["eng"],"dc:subject":["neuromuscular","hyperthermia","force task","position task"],"dc:title":["Neuromuscular responses to an isometric force and position task during passive hyperthermia"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["Faculty of Applied Health Sciences"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.Sc. Applied Health Sciences"],"thesis:institution_name":["Brock University"]},"updated_at":"2026-07-24T01:23:05Z"}