The Effects of Different Isocaloric Oral Nutrient Solutions on Psychophysical, Metabolic, Cognitive, and Olfactory Function in Young Male Subjects

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Bachlechner S, Denzer-Lippmann MY, Wielopolski J, Fischer M, Büttner AK, Dörfler A, Schöfl C, Muench G, Kornhuber J, Thürauf N
Zeitschrift: Frontiers in psychology
Verlag: FRONTIERS MEDIA SA
Jahr der Veröffentlichung: 2017
Band: 8
ISSN: 1664-1078


Abstract

Food intake influences human cognition, olfaction, hunger, and food craving. However, little research has been done in this field to elucidate the effects of different nutrients. Thus, the goal of our study was to investigate the effects of oral ingestion of different nutrient solutions on olfactory, cognitive, metabolic and psychophysical function. Twenty healthy men participated in our study employing a double-blind, cross-over, repeated measurement design. Participants were tested on four different study days. Each day participants received, in randomized order, one of three isocaloric (protein, carbohydrate or fat 600 kcal, 1,500mL) solutions or a placebo. Olfactory and cognitive tests (monitoring only) were conducted three times, i.e., 60min before the beginning of nutrient intake, following oral ingestion of the solution and 60, and 240min after. Psychophysical and metabolic function tests (active grehlin, desacyl ghrelin, insulin, glucagon, glucose, triglyceride, urea) were performed 7 times on each examination day (observation period: -60min, 0 = solution intake, +60, +120, +180, +240, and +300min). Ratings of hunger and food craving significantly differed over the observation period with lowest ratings following application of the protein solution. Highest ratings of craving were found following placebo intake. We further observed a significant positive correlation of active grehlin with hunger and fat, protein and sweets craving for each nutrient solution. Active grehlin significantly correlated with carbohydrate craving for carbohydrate and fat solution and with vegetable craving for fat solution only. Hunger hormone levels, hunger and food craving ratings demonstrated that the hierarchical order that appears in satiating efficiencies of isovolumetric-isocaloric ingested macronutrients is protein > fat > carbohydrate. Our study reveals that the type of nutrient exerts a significant influence on metabolic parameters, hunger and food craving.


FAU-Autoren / FAU-Herausgeber

Büttner, Andrea Prof. Dr.
Lehrstuhl für Aroma- und Geruchsforschung
Dörfler, Arnd Prof. Dr.
Neuroradiologische Abteilung im Radiologischen Institut
Kornhuber, Johannes Prof. Dr. med.
Lehrstuhl für Psychiatrie und Psychotherapie
Schöfl, Christof Prof. Dr.
Professur für Endokrinologie
Thürauf, Norbert Prof. Dr.
Medizinische Fakultät
Wielopolski, Jan
Medizinische Fakultät


Autor(en) der externen Einrichtung(en)
University of Western Sydney


Zitierweisen

APA:
Bachlechner, S., Denzer-Lippmann, M.Y., Wielopolski, J., Fischer, M., Büttner, A.K., Dörfler, A.,... Thürauf, N. (2017). The Effects of Different Isocaloric Oral Nutrient Solutions on Psychophysical, Metabolic, Cognitive, and Olfactory Function in Young Male Subjects. Frontiers in psychology, 8. https://dx.doi.org/10.3389/fpsyg.2017.01988

MLA:
Bachlechner, Stephan, et al. "The Effects of Different Isocaloric Oral Nutrient Solutions on Psychophysical, Metabolic, Cognitive, and Olfactory Function in Young Male Subjects." Frontiers in psychology 8 (2017).

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Zuletzt aktualisiert 2018-24-08 um 13:08