Effects of Dietary Protein Intake From Beef/Pork and Soy/Legumes on Appetite, Mood, and Weight Loss

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

37 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-01-31

Study Completion Date

2011-09-30

Brief Summary

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The primary aims of this study are to assess the effects of habitual dietary protein intakes across the acceptable macronutrient distribution range with lean beef/pork or soy/legumes as the predominate sources of protein on indices of daily appetite and mood, and on postprandial appetite, mood, energy expenditure, and glycemic responses during energy-restricted weight loss in overweight adults.

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Detailed Description

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Conditions

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Appetite Mood Weight Loss

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Arm 1: Beef/Pork

Participants consuming diet with beef/pork as predominate sources of protein

Group Type EXPERIMENTAL

Beef/Pork

Intervention Type OTHER

Participants consuming diet containing 10, 20 or 30% dietary protein with beef/pork as the predominate sources of protein

Arm 2: Soy/Legumes

Participants consuming diet with soy/legumes as predominate sources of protein

Group Type EXPERIMENTAL

Soy/Legumes

Intervention Type OTHER

Participants consuming diet containing 10, 20, or 30% dietary protein with soy/legumes as the predominate sources of protein.

Interventions

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Beef/Pork

Participants consuming diet containing 10, 20 or 30% dietary protein with beef/pork as the predominate sources of protein

Intervention Type OTHER

Soy/Legumes

Participants consuming diet containing 10, 20, or 30% dietary protein with soy/legumes as the predominate sources of protein.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age range: 21 years and older
* Body mass index between 27.0-36.9 kg/m2
* Non-smoking (within the last 6 months)
* Weight stable (\< 3 kg (\~7 lbs) weight gain or loss within last 3 months)
* Energy need for weight maintenance 1950-2750 kcal/day
* Not dietary restrained
* Menstruating women not pregnant or lactating
* Constant habitual activity patterns (within last 3 months)
* No Acute Illness (or have chronic diseases known to influence protein or energy metabolism)
* Non-diabetic
* Clinically normal blood profiles (within 10% of clinical normalcy)
* Non-hypertensive
* Not taking medications known to influence appetite or metabolism
* Willingness to eat study foods
* Able to travel to testing facility

Exclusion Criteria

* Age: \<21 years
* Body mass index: outside of the 27.0-36.9 kg/m2 range
* Smoker (currently or within the last 6 months)
* Gained or lost \> 3.0 kg (7 lbs) within the last 3 months
* Energy need for weight maintenance \< 1950 or \> 2750 kcal/day
* Dietary restrained (≥ 14 on Three Factor Eating Questionnaire)
* Pregnant, lactating, or non-menstruating women
* Clinically diagnosed as a diabetic, or with liver or kidney disease/dysfunction, or osteoporosis
* Clinically abnormal blood profiles as identified by our study physician, Arthur Rosen, MD
* Hypertensive
* Taking medications (currently or within the last 3 months) known to influence appetite or metabolism
* Allergies to eggs
* Lactose intolerance
* Unwillingness to eat study foods
* Inability to travel to testing facility

Minimum Eligible Age

21 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes