Lack of Satiety
Conditions
Keywords
obesity, satiety, soy protein, soy fiber, control appetite, reduce food intake
Brief summary
The purpose of this study is to determine whether ingestion of a bar containing either added soy protein or soy fiber or both, increases subjective and objective measures of satiety compared to a control bar.
Detailed description
The study will use a randomized, double blind crossover design in which subjects act as their own control. Satiation will be assessed using a Motivation to Eat Questionnaire. Height and weight will be measured at the screening visit and weight alone at each subsequent visit. Prior to consumption of the test meal (breakfast) and at 15, 30, 60, 90, 120 and 150 min thereafter, subjects will complete a VAS Motivation to Eat Questionnaire. After subjects complete the first VAS motivation questionnaire, they will be given the test meal and instructed to eat this over a 15 minute period and fill out a palatability questionnaire. Two hours after the start of the test meal they will be taken to a private feeding room, where an ad libitum pizza lunch will be served with mineral water. Participants will be instructed to eat and drink as much as they desire until they are comfortably full. Subjects will be asked to fill out a final VAS Motivation to eat questionnaire 30 min after the start of the pizza meal.
Interventions
OTHERSatiety
Single consumption of snack bars to determine satiety and food intake at next meal.
Sponsors
Glycemic Index Laboratories, Inc
Solae, LLC
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
20 Years to 60 Years
Healthy volunteers
Yes
Inclusion criteria
* BMI between 20 and 30 kg/m2 * Age between 20-60y * Unrestrained eater (score\<15) * Regularly consume 3 meals per day * Moderate exercise (eg running , aerobics classes, other sports activities) of no more than 7 hours per week
Exclusion criteria
* use of drugs that influence carbohydrate or lipid metabolism (eg betablockers,hypoglycemic agents, antibiotics taken less than 6 weeks before study entry, glucocorticoids, anti-diarrheal medication, weight loss medication etc), and anti-diabetic medication * presence of any significant disease (eg gastrointestinal diseases, diabetes, a CVD event less than 12 weeks from study entry, current hepatic disease etc) * use of special dietary treatments or supplement within 4 weeks of study * restrained eater (score\>15) * weight change (±10% of body weight) within the previous 6 weeks * alcohol intake \>2 drinks/day * food allergies of any kind * swallowing difficulties, * exercising more than 7 hours per week
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Satiety | at each visit (4 visits total) | visual analog scales for satiety |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Ad Libitum Energy Intake | at each visit (4 visits total) | Pizza lunch amount consumed will be measured |
Countries
Canada
Outcome results
None listed