Bone Mineral Density and Biomarkers of Bone Turnover in Young-Adult Females with and without Cognitive Eating Restraint

Simple item page
dc.contributor.authorBeiseigel, Jeannemarie Maryen
dc.contributor.committeechairNickols-Richardson, Sharon M.en
dc.contributor.committeememberGwazdauskas, Francis C.en
dc.contributor.committeememberPoole, Kathleen P.en
dc.contributor.committeememberRamp, Warren K.en
dc.contributor.committeememberHerbert, William G.en
dc.contributor.departmentHuman Nutrition, Foods, and Exerciseen
dc.date.accessioned2014-03-14T20:13:52Zen
dc.date.adate2003-07-15en
dc.date.available2014-03-14T20:13:52Zen
dc.date.issued2003-07-07en
dc.date.rdate2004-07-15en
dc.date.sdate2003-07-11en
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
dc.description.degreePh. D.en
dc.identifier.otheretd-07112003-150959en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07112003-150959/en
dc.identifier.urihttp://hdl.handle.net/10919/28259en
dc.publisherVirginia Techen
dc.relation.haspartBeiseigelpdf.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectYoung womenen
dc.subjectChronic dietingen
dc.subjectCortisolen
dc.subjectCognitive eating restrainten
dc.subjectBone turnoveren
dc.subjectBone mineral densityen
dc.titleBone Mineral Density and Biomarkers of Bone Turnover in Young-Adult Females with and without Cognitive Eating Restrainten
dc.typeDissertationen
thesis.degree.disciplineHuman Nutrition, Foods, and Exerciseen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Beiseigelpdf.pdf
Size:
4.37 MB
Format:
Adobe Portable Document Format
Download

Collections

Doctoral Dissertations