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

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 w...

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Main Author: Hume, David John
Other Authors: Lambert, Vicki
Format: Thesis
Language:English
Published: MRC/UCT RU for Exercise and Sport Medicine 2016
Subjects:
Exercise Science
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access_status_str Open Access
author Hume, David John
author2 Lambert, Vicki
author_browse Hume, David John
Lambert, Vicki
author_facet Lambert, Vicki
Hume, David John
author_sort Hume, David John
collection Thesis
description 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]
format Thesis
id oai:open.uct.ac.za:11427/20254
institution University of Cape Town (South Africa)
language eng
last_indexed 2026-06-10T12:32:31.718Z
license_str Not specified — see source repository
provenance_str_mv Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository
publishDate 2016
publishDateRange 2016
publishDateSort 2016
publisher MRC/UCT RU for Exercise and Sport Medicine
publisherStr MRC/UCT RU for Exercise and Sport Medicine
record_format dspace
source_str UCTD — University of Cape Town Open Access Repository
spelling oai:open.uct.ac.za:11427/20254 Mind the gap: brain-behaviour barriers to successful weight loss maintenance Hume, David John Lambert, Vicki Exercise Science 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] 2016-07-08T10:39:30Z 2016-07-08T10:39:30Z 2015 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/20254 eng application/pdf MRC/UCT RU for Exercise and Sport Medicine Faculty of Health Sciences University of Cape Town
spellingShingle Exercise Science
Hume, David John
Mind the gap: brain-behaviour barriers to successful weight loss maintenance
thesis_degree_str Doctoral
title Mind the gap: brain-behaviour barriers to successful weight loss maintenance
title_full Mind the gap: brain-behaviour barriers to successful weight loss maintenance
title_fullStr Mind the gap: brain-behaviour barriers to successful weight loss maintenance
title_full_unstemmed Mind the gap: brain-behaviour barriers to successful weight loss maintenance
title_short Mind the gap: brain-behaviour barriers to successful weight loss maintenance
title_sort mind the gap brain behaviour barriers to successful weight loss maintenance
topic Exercise Science
url http://hdl.handle.net/11427/20254
work_keys_str_mv AT humedavidjohn mindthegapbrainbehaviourbarrierstosuccessfulweightlossmaintenance

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