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Portion size affects hedonic ratings of food in overweight individuals
Author(s) -
Burger Kyle Stanley,
Cornier MarcAndre,
Johnson Susan L.
Publication year - 2009
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.23.1_supplement.101.6
Subject(s) - overweight , appeal , portion size , obesity , body mass index , psychology , food choice , affect (linguistics) , serving size , demography , medicine , social psychology , food science , environmental health , endocrinology , chemistry , communication , political science , pathology , sociology , law
Increases in portion size result in increased energy intake and likely contribute to the rise in obesity. The underlying mechanism for this 'portion size effect' has not been determined. In our study, participants (n=99; F=57, M=42) of varying body mass index (25.9±7.3) were asked to consume a nutritional supplement, complete visual analog scales for fullness and then rate food images for hedonic value (food appeal & desire to eat) using the computer program ImageRate (scales of 0‐100; 0=lowest & 100=highest). Participants rated 165 food images. Twenty‐three pairs of foods were presented in two portion sizes (large & small). Participants then completed eating behavior questionnaires and height and weight were measured. Food appeal and desire to eat were analyzed for the effects of weight, sex, fullness and interaction terms using analysis of variance. Overweight (OW) participants rated images higher for appeal than lean participants (p<0.05). This result was driven by OW women (p<0.05). Fullness was inversely correlated to appeal and desire to eat (p<0.05). There was a trend for OW participants to rate images of large portions higher than images of small portions for desire to eat (p=0.05). This was significant for OW men (p<0.05). Increased food appeal and desire to eat larger portions suggest possible mechanisms by which larger portion sizes increase energy intake and contribute to excess weight gain. Grant Funding Source NIDDK DK62874