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CompletedNCT02977260Updated Nov 30, 2016

The Lunch Study: the Combined Effects of Food Texture and Energy Density on Intake

An interventional study of Thin/Low Energy and Thin/High Energy in Satiation, sponsored by Singapore Institute of Food and Biotechnology Innovation. Completed at 1 site in Singapore. Open to participants aged 21 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-11-30.

Sponsored by Singapore Institute of Food and Biotechnology Innovation · Not applicable, Interventional, and Basic science

Phase
Not applicable
Study type
Interventional
Enrollment
63
Allocation
Randomized
Ages
21 Years to 50 Years
Sex
All
01

Study summary

Meal size is strongly influenced by a number of external features of the food environment which can promote over-consumption, such as the availability of palatable energy dense foods. The current research aimed to investigate whether natural food-based differences in texture could be used to slow down eating rate and reduce intake from large portions and higher energy dense foods.

A four-session randomised crossover study assessed the effect of faster vs. slower eating rate, achieved through manipulating food texture, on ad-libitum consumption (weight and calories) at a meal, alone and in combination with variations in meal energy-density (higher vs. lower)

Read the detailed description

The current obesogenic environment is characterized by the abundance of palatable and high energy dense foods. High dietary energy density can promote sustained overcompensation at meal times. On the other hand, eating at a slower rate has been shown to reduce meal size, and food-based texture differences can slow eating rate. It is possible that texture-based differences in eating rate could be used to reduce energy intake in of foods that are higher in energy density.

This study was conducted to quantify the effect of eating rate (fast vs. slow) on ad-libitum consumption of a meal, alone and in combination with variations in meal energy-density (0.57 kcal/g vs 1.01 kcal/g). The meal combinations were as follows:

Meal 1: thin/0.57 kcal; Meal 2: thin/1.01 kcal/g; Meal 3: thick/ 0.57 kcal/g; Meal 4: thick /1.01 kcal/g

Participants consumed the four test meals over four non-consecutive test sessions at the Clinical Nutrition Research Centre, with at least three days washout between each session. Each part followed a completely randomised full crossover design.

The primary objective was to assess ad libitum intake (both kcal and g) of the test meals, depending on the combination of food texture and energy density.

The secondary objectives were to assess the eating rate, oral processing characteristics, changes in rated appetite up to 90 minutes post-consumption and energy intake (kcal) for the rest of the test day (food diary), as a function of the test meal texture and energy density

02

Conditions studied

  • Satiation

Keywords

  • Meal size
03

In context

Lead sponsor

Singapore Institute of Food and Biotechnology Innovation is the lead sponsor of 69 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Aged between 21 and 50 years
  • BMI \< 30 kg/m2

Exclusion criteria

Exclusion criteria:

  • Individuals whose body weight has changed more than 5 kilograms in the last 12 months
  • People who are taking insulin or medications known to affect glucose metabolism, appetite or energy metabolism
  • Individuals who are currently dieting
  • People with intolerances or allergies to study foods or test products, e.g. soya, wheat, gluten, cereal, fruits, biscuits, dairy products, rice, vegetable, meat, seafood, sugar and sweetener, gelatin, natural food colourings or flavourings, etc
  • Pregnant women
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Participant)
Enrollment
63 participants (actual)

Study arms

  • Experimental
    Test Meal 1

    Thin/Low Energy

    Other: Thin/Low Energy

  • Experimental
    Test Meal 2

    Thin/High Energy

    Other: Thin/High Energy

  • Experimental
    Test Meal 3

    Thick/Low Energy

    Other: Thick/Low Energy

  • Experimental
    Test Meal 4

    Thick/High Energy

    Other: Thick/High Energy

Interventions

  • OtherThin/Low Energy

    Thin textured rice meal (ground rice grains) with lower energy density (0.57 kcal/g)

  • OtherThin/High Energy

    Thin textured rice meal (ground rice grains) with higher energy density (1.01 kcal/g)

  • OtherThick/Low Energy

    Thicker textured rice meal (whole rice grains) with lower energy density (0.57 kcal/g)

  • OtherThick/High Energy

    Thicker textured rice meal (whole rice grains) and high energy density (1.01 kcal/g)

06

What researchers measure

Primary outcomes

  1. Ad libitum intake of the test meals - weight (g)

    The weight of the test meal consumed during the test session was measured. There are four test sessions and participants eat one of the four test meals each session. The amount consumed was measured each time.

    Time frame: Measured once for up to 20 minutes

  2. Ad libitum intake of the test meals - calories (kcal)

    The weight of the meal consumed was measured and convert to calories using the meal energy density (which is known). There are four test sessions and participants eat one of the four test meals each session. The amount consumed was measured each time.

    Time frame: Measured once for up to 20 minutes

Secondary outcomes

  1. Eating rate of the test meals

    Video recordings of the participants eating are coded and from this eating rate was calculated as grams consumed per minute (g/min).

    Time frame: Measured once for up to 20 minutes

  2. Changes in rated appetite pre- to post meal consumption and up to 90 minutes post-consumption

    100-point Visual Analogue Scale (VAS) ratings of hunger, fullness, desire to eat, prospective consumption and thirst

    Time frame: pre-meal, immediately post-meal, +15 minutes, +30 minutes, +45 minutes, +60 minutes, +75 minutes, + 90 minutes

  3. Energy intake (kcal) for the rest of the test day recorded in a Food diary

    Food intake recorded in a food diary

    Time frame: Up to 24 hours

07

Study locations

1 site
  • Clinical Nutrition Research Centre
    Singapore, 117599, Singapore
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 30, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02977260
Lead sponsor
Singapore Institute of Food and Biotechnology Innovation
Responsible party
Keri McCrickerd (Dr Keri McCrickerd, Singapore Institute of Food and Biotechnology Innovation) — Principal investigator
First posted
Nov 30, 2016
Start date
Sep 2015
Primary completion
Sep 2016
Completion
Sep 2016
Last update
Nov 30, 2016

Study contacts

Keri McCrickerd, PhD
principal investigator · Clinical Nutrition Research Centre

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Nov 2016. You cannot join it, but the record below documents what was studied.

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