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    The impact of a protein-rich breakfast on food cravings and reward in overweight/obese 'breakfast skipping' adolescent girls

    Hoertel, Heather A.
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    Date
    2012
    Format
    Thesis
    Metadata
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    Abstract
    This study examined whether the addition of a higher-protein (HP) vs. normal-protein (NP) breakfast leads to beneficial changes in perceived appetite, food cravings, and plasma homovanillic acid (HVA), which is an index of central dopamine production, in overweight/obese 'breakfast skipping' (BS) teen girls. A randomized crossover design was incorporated in which 20 BS girls (age 19[plus or minus]1y; BMI 28.6[plus or minus]0.7kg/m2) consumed 350 kcal breakfast meals containing NP (13g protein) or HP meals (35g protein) for 7 days. On day 7, a 4h testing day was completed including the consumption of breakfast followed by perceived appetite, satiety, and food craving questionnaires and blood sampling for HVA concentration assessment throughout the morning. Breakfast, regardless of protein content, reduced perceived hunger and cravings for sweet and savory foods vs. BS (all, p<0.05). Breakfast also increased perceived fullness and overall pleasure/well-being vs. BS (all, p<0.05). Between meals, HP led to greater reductions in savory cravings vs. NP (p<0.05) and greater increases in fullness vs. NP (p=0.08). No other differences in perceived sensations were observed. Plasma HVA concentrations were greater following consumption of both breakfast meals vs. BS (both, p<0.05), with only HP exhibiting sustained increases prior to lunch vs. NP (p=0.09). Additionally, HVA concentrations were correlated with perceived fullness, breakfast palatability, and protein content at breakfast. In conclusion, these findings suggest that the daily addition of a protein-rich breakfast, containing 35g of protein, alters signals associated with food motivation and reward, and might be a beneficial strategy to combat the modern food environment in young people.
    URI
    https://doi.org/10.32469/10355/15961
    https://hdl.handle.net/10355/15961
    Degree
    M.S.
    Thesis Department
    Nutrition area program (MU)
    Rights
    OpenAccess.
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
    Collections
    • 2012 MU theses - Freely available online
    • Nutrition and Exercise Physiology electronic theses and dissertations (MU)

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