Mind the gap: brain-behaviour barriers to successful weight loss maintenance

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dc.contributor.advisorLambert, Vickien_ZA
dc.contributor.authorHume, David Johnen_ZA
dc.date.accessioned2016-07-08T10:39:30Z
dc.date.available2016-07-08T10:39:30Z
dc.date.issued2015en_ZA
dc.description.abstractThe primary objectives of this dissertation were to investigate the behavioural and neurophysiological factors related to overweight and obesity, as well as to weight loss maintenance versus weight relapse in a purposively sampled group of healthy South African women. The battery of investigations was designed to explore two central hypotheses: First, weight loss induces several behavioural compensations related to habitual eating behaviour and daily physical activity (PA) practices which facilitate the generation of a chronic positive energy balance, thereby increasing the risk of weight regain in reduced-overweight and reduced-obese women. Second, overweight and obese women as well as those at risk of undergoing relapse exhibit heightened indices of visual food cue-reactivity in various regions of the brain associated with obesogenic eating and reward-seeking tendencies. The novelty of this thesis lies in that we ascertained dietary, PA and psychobehavioural variables through both subjective accounts and objective measurement. Moreover, we employed electroencephalography to objectively evaluate high resolution temporal changes in visual food cue processing to test our second hypothesis. Overweight and obesity treatments focus, for the most part, on dietary- and/or exercise-centred interventions to facilitate weight loss. Our data suggest that certain interaction effects exist between the perception of environmental food cues and variables such as dietary restraint, habitual fat intake, body shape dissatisfaction and total body adiposity [Note: this thesis is embargoed until 30 November 2016]en_ZA
dc.identifier.apacitationHume, D. J. (2015). <i>Mind the gap: brain-behaviour barriers to successful weight loss maintenance</i>. (Thesis). University of Cape Town ,Faculty of Health Sciences ,MRC/UCT RU for Exercise and Sport Medicine. Retrieved from http://hdl.handle.net/11427/20254en_ZA
dc.identifier.chicagocitationHume, David John. <i>"Mind the gap: brain-behaviour barriers to successful weight loss maintenance."</i> Thesis., University of Cape Town ,Faculty of Health Sciences ,MRC/UCT RU for Exercise and Sport Medicine, 2015. http://hdl.handle.net/11427/20254en_ZA
dc.identifier.citationHume, D. 2015. Mind the gap: brain-behaviour barriers to successful weight loss maintenance. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Hume, David John AB - The primary objectives of this dissertation were to investigate the behavioural and neurophysiological factors related to overweight and obesity, as well as to weight loss maintenance versus weight relapse in a purposively sampled group of healthy South African women. The battery of investigations was designed to explore two central hypotheses: First, weight loss induces several behavioural compensations related to habitual eating behaviour and daily physical activity (PA) practices which facilitate the generation of a chronic positive energy balance, thereby increasing the risk of weight regain in reduced-overweight and reduced-obese women. Second, overweight and obese women as well as those at risk of undergoing relapse exhibit heightened indices of visual food cue-reactivity in various regions of the brain associated with obesogenic eating and reward-seeking tendencies. The novelty of this thesis lies in that we ascertained dietary, PA and psychobehavioural variables through both subjective accounts and objective measurement. Moreover, we employed electroencephalography to objectively evaluate high resolution temporal changes in visual food cue processing to test our second hypothesis. Overweight and obesity treatments focus, for the most part, on dietary- and/or exercise-centred interventions to facilitate weight loss. Our data suggest that certain interaction effects exist between the perception of environmental food cues and variables such as dietary restraint, habitual fat intake, body shape dissatisfaction and total body adiposity [Note: this thesis is embargoed until 30 November 2016] DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - Mind the gap: brain-behaviour barriers to successful weight loss maintenance TI - Mind the gap: brain-behaviour barriers to successful weight loss maintenance UR - http://hdl.handle.net/11427/20254 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/20254
dc.identifier.vancouvercitationHume DJ. Mind the gap: brain-behaviour barriers to successful weight loss maintenance. [Thesis]. University of Cape Town ,Faculty of Health Sciences ,MRC/UCT RU for Exercise and Sport Medicine, 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/20254en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentMRC/UCT RU for Exercise and Sport Medicineen_ZA
dc.publisher.facultyFaculty of Health Sciencesen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherExercise Scienceen_ZA
dc.titleMind the gap: brain-behaviour barriers to successful weight loss maintenanceen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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