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Energy metabolism and body image of chronic dieters

by Gingras, Jacqueline Rochelle

Abstract (Summary)
Chronic Dieting Syndrome can have negative physiological and psychological consequences. The study objective was to describe differences between two groups (15/group) of female chronic dieters (aged 21-49) with either a high resting energy expenditure (H-REE) (21 00% of predicted) or a low REE (L-REE) (185'' of predicted). Body composition, aerobic fitness, physical activity, glucose/insulin response, leptin/thyroid hormone status, dietary intake, dietary restraint, and body image were measured. 60th groups were similar with respect to age, height, weight, and BMI. The H-REE group displayed higher lean body mass, insulin response to test meal, thyroxine, reverse-triiodothyronine, and lower dietary restraint. Differences in insulin response were associated with higher ratios of abdominal:gluteal body fat in H-REE. Chronic dieters were less satisfied with their bodies than reference populations. Groups did not differ with respect to dietary intake, aerobic fitness, and physical activity. It appears that H- REE does not necessarily predict positive metabolic health among chronic dieters. I would first like to recognize the support and encouragement of my supervisor, Linda McCargar, who possessed the unique ability to guide me though the perils of research while allowing me the freedom to make this project my own. I truly appreciate the many rneaningful opportunities you have provided. A generous thank-you goes to the research participants who enthusiastically donated their time. Their cornmitment to women's health was gratefully appreciated. My time at The University of Alberta was especially mernorable thanks to my fellow graduate students. I acknowledge the support, encouragement, perspective, and laughter you gave so freely. Along the way, several unique individuals make your life richer for their acquaintance, generous personality, and sheer joy for living. Judy Hancock is one of those people whose friendship will last a lifetime. Certain people were instrumental in providing their expertise for the timely completion of this project. Thank-you to Vicki Harber, Nigel Gann, Susan Goruk, Catherine Field, Shirley Shostak, and the Dynacare-Kasper Medical Laboratory staff for generously offering your time whenever it was requested. A very special thanks to the exceptional departmental support staff who were always quick to offer their help in times of crises and who often go unrecognized for their valuable contributions. My family has always been a tremendous source of inspiration and support. Thank-you for your love and encouragement during my degree and always. To the complex, intriguing Leanna who gave me a sense of myself beyond my research and continues to provide unparalleled discovery and sustenance. Finally, this thesis would not have been possible if not for the strength, wisdom, integrity, and patience of my closest friend. Mere words can not express my gratitude, my respect, and my love for you. I am constantly amazed by your rare ability to wade through the chaos, to maintain a rational perspective, and to bring out the best in me, al1 while devoting the time required to establish yourself as a remarkable researcher, scholar, and teacher. You are truly extraordinary and forever beside me. Thank-you again and again and again. Table of Content? TABLE
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Source Type:Master's Thesis

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Date of Publication:01/01/1998

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