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dc.contributor.authorBeiseigel, Jeannemarie Maryen_US
dc.date.accessioned2014-03-14T20:13:52Z
dc.date.available2014-03-14T20:13:52Z
dc.date.issued2003-07-07en_US
dc.identifier.otheretd-07112003-150959en_US
dc.identifier.urihttp://hdl.handle.net/10919/28259
dc.description.abstractThe early adult years are critical as they provide the final window of opportunity to maximize peak bone mass and help prevent osteoporosis later in life. Dietary habits of young women are often molded by social pressures to be thin. Negative implications for cognitive eating restraint (CER) on bone health have been shown, but direct evidence to support such contentions is limited. Therefore, this study was conducted to further investigate the relationships between CER and bone health in young women. Women aged 18 to 25 years with normal body mass index and limited physical activity participated in this study. Body composition and anthropometric variables, dietary intake, endocrine factors, biomarkers of bone turnover, and measurements of bone mineral content (BMC) and bone mineral density (BMD) were examined cross-sectionally in women with high (n = 31) and low (n = 34) CER scores. High CER participants possessed more fat mass (FM) (p < 0.05) and percent body fat (BF%) (p = 0.01) and consumed a greater number of servings of fruits and vegetables (p < 0.05) per day than the CER participants. No differences in biochemical measurements, BMC or BMD were found between groups. Using similar methods, a study was conducted to compare high (n = 27) and low (n = 26) CER groups at baseline and after 6-months. At baseline, the high CER group possessed significantly higher FM (p < 0.05) and BF% (p = 0.01) and lower biochemical markers of bone formation (p < 0.05) than the low CER group; no other group differences were apparent at baseline. Using repeated measures ANOVA, a significant Group x Time interaction was identified for salivary cortisol concentrations (p < 0.05). Mean salivary cortisol concentrations were significantly lower at 6-months versus baseline in the high CER group (p < 0.05) but did not differ between time points in the low CER group. No other significant Group x Time interactions were found. Overall, despite finding a lower serum osteocalcin concentration in the high CER group at baseline, evidence of compromised BMC or BMD between women with high versus low CER scores over 6 months was not found.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartBeiseigelpdf.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectYoung womenen_US
dc.subjectChronic dietingen_US
dc.subjectCortisolen_US
dc.subjectCognitive eating restrainten_US
dc.subjectBone turnoveren_US
dc.subjectBone mineral densityen_US
dc.titleBone Mineral Density and Biomarkers of Bone Turnover in Young-Adult Females with and without Cognitive Eating Restrainten_US
dc.typeDissertationen_US
dc.contributor.departmentHuman Nutrition, Foods, and Exerciseen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineHuman Nutrition, Foods, and Exerciseen_US
dc.contributor.committeechairNickols-Richardson, Sharon M.en_US
dc.contributor.committeememberGwazdauskas, Francis C.en_US
dc.contributor.committeememberPoole, Kathleen P.en_US
dc.contributor.committeememberRamp, Warren K.en_US
dc.contributor.committeememberHerbert, William G.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07112003-150959/en_US
dc.date.sdate2003-07-11en_US
dc.date.rdate2004-07-15
dc.date.adate2003-07-15en_US


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