Cited by 76Regulation of Appetite and ObesityNutrition, Health and Food BehaviorNutrition and Health in Aging

Liquid and Solid Meal Replacement Products Differentially Affect Postprandial Appetite and Food Intake in Older Adults

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Stull, April J., Apolzan, John W., Thalacker-Mercer, Anna E., Iglay, Heidi B., Campbell, Wayne W.·2008·Journal of the American Dietetic Association

Abstract

Liquid and solid foods are documented to elicit differential appetitive and food intake responses. This study was designed to assess the influences of liquid vs solid meal replacement products on postprandial appetite ratings and subsequent food intake in healthy older adults. This study used a randomized and crossover design with two 1-day trials (1 week between trials), and 24 adults (12 men and 12 women) aged 50 to 80 years with body mass index (calculated as kg/m2) between 22 and 30 participated. After an overnight fast, the subjects consumed meal replacement products as either a beverage (liquid) or a bar (solid). The meal replacement products provided 25% of each subject's daily estimated energy needs with comparable macronutrient compositions. Subjects rated their appetite on a 100 mm quasilogarithmic visual analog scale before and 15, 30, 45, 60, 90, 120, and 150 minutes after consuming the meal replacement product. At minute 120, each subject consumed cooked oatmeal ad libitum to a "comfortable level of fullness." Postprandial composite (area under the curve from minute 15 to minute 120) hunger was higher (P=0.04) for the liquid vs solid meal replacement products and desire to eat (P=0.15), preoccupation with thoughts of food (P=0.07), and fullness (P=0.25) did not differ for the liquid vs solid meal replacement products. On average, the subjects consumed 13.4% more oatmeal after the liquid vs solid (P=0.006) meal replacement product. These results indicate that meal replacement products in liquid and solid form do not elicit comparable appetitive and ingestive behavior responses and that meal replacement products in liquid form blunt the postprandial decline in hunger and increase subsequent food intake in older adults.

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Crossref · 10.1016/j.jada.2008.04.014

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  • Controlled short-term trials indicate that drinks satisfy hunger less than solid foods, raising total energy intake.

    “Short-term controlled trials suggest that liquids are less satiating than solid foods, increasing the total amount of energy consumed.38”
  • Limited short-term trials suggest that compared with solid foods, calories in liquid form may be less satiating and thereby increase the total amount of daily calories consumed.

    “Limited short-term trials suggest that compared with solid foods, calories in liquid form may be less satiating and thereby increase the total amount of daily calories consumed.92,93”

    From Components of a Cardioprotective Diet: New Insights (2011) · cites this paper as [92]

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Authors
Stull, A. J., Apolzan, J. W., Thalacker-Mercer, A. E., Iglay, H. B., & Campbell, W. W.
Affiliations
Pennington Biomedical Research Center (US)
Corresponding author
Campbell, Wayne W.
Venue
Journal of the American Dietetic Association
Publisher
Elsevier BV
Published
2008-07
Volume
108
Issue
7
Pages
1226-1230
ISSN
0002-8223 (ISSN-L)
OpenAlex
W2048061947
Cited by
76
References
19
Citations by year
2026: 2 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 1 · 2021: 3 · 2020: 7 · 2019: 4 · 2018: 3 · 2017: 3 · 2016: 2 · 2015: 4 · 2014: 5 · 2013: 5 · 2012: 8
FWCI
3.09
Type
journal article
Language
en
Open access
Locations
  • Journal of the American Dietetic Association (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Purdue University
  • National Institutes of Health (R01‐grant)
  • National Institute on Aging (R01AG021911)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Nursing › Nutrition and Dietetics › Nutrition, Health and Food Behavior
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
Keywords
postprandial appetite, hunger, dietary intake, older adults, appetite regulation, satiety, desire to eat, macronutrient composition
MeSH terms
Aged, Aged, 80 and over, Aging, Appetite, Energy Intake, Female, Food, Formulated, Humans, Hunger, Male, Middle Aged, Satiety Response, Body Mass Index, Cross-Over Studies, Postprandial Period, Area Under Curve

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