KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Dissertations and Theses
    • Theses
    • View Item
    •   KU ScholarWorks
    • Dissertations and Theses
    • Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    The acute effects of dietary protein at breakfast on reward driven neural activity prior to lunch

    Thumbnail
    View/Open
    Harris_ku_0099M_11033_DATA_1.pdf (1.035Mb)
    Issue Date
    2010-07-09
    Author
    Harris, Corey T.
    Publisher
    University of Kansas
    Format
    65 pages
    Type
    Thesis
    Degree Level
    M.S.
    Discipline
    Dietetics & Nutrition
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
    Metadata
    Show full item record
    Abstract
    Although numerous studies have targeted the physiological, homeostatic signals altered with various dietary interventions, data are limited concerning whether the non-homeostatic, reward-driven mechanisms underlying ingestive behavior are modulated. The study purpose was to determine whether breakfast consumption would modulate the neural activity in brain regions associated with reward-driven eating in overweight `breakfast skipping' (BS) adolescent girls and to identify whether increased protein at breakfast leads to additional alterations. Ten girls (Age: 15±1y; BMI percentile 93±1%; BS 5±1x/week) completed 3 testing days. Following the BS day, the participants were provided with, in randomized order, normal protein (NP; 18±1g protein) or higher protein (HP; 50±1g protein) breakfast meals to consume at home for six days. On day 7 of each pattern, the participants came to the laboratory to consume their respective breakfast followed by pre-lunch (i.e., 3-h post-breakfast) appetite questionnaires and a functional magnetic resonance imaging (fMRI) brain scan to identify brain activation responses to viewing food vs. non-food images. Breakfast consumption led to reduced hippocampus and parahippocampus activation and increased medial frontal gyrus activation vs. BS. Between breakfast meals, HP resulted in reduced insula activation vs. NP. Parahippocampal and insula activations were correlated with appetite; insula activation was inversely correlated with satiety. Collectively, the incorporation of breakfast led to alterations in brain activation involved with reward-driven eating behavior with additional alterations following the protein-rich meal. These data suggest that increased dietary protein at breakfast might be a beneficial, modest strategy to reduce the impact of the modern food environment in overweight `breakfast skipping' adolescent girls.
    URI
    http://hdl.handle.net/1808/6779
    Collections
    • Education Dissertations and Theses [1065]
    • Theses [3772]

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    Login

    Statistics

    View Usage Statistics

    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps