Evaluation of Metabolism-Boosting Beverages

Medifast, Inc.30 enrolled

Overview

The purpose of this study is to assess the effect of Metabolism-boosting Beverages (MBB) containing green tea extract with a standardized amount of epigallocatechin gallate (EGCG) and caffeine.

The study will assess the effect of MBB's on 24 hour energy expenditure by performing indirect calorimetry, and on appetite using visual analogue scales (VAS). The planned sample size is 54 healthy male and female adults, both lean and overweight. We plan to test 6 metabolism-boosting beverages in the following order: 1) Raspberry Tea 2) Banana Shake 3) Chai Latte 4) Strawberry Shake 5) Cappuccino 6) Hot Cocoa. In the order that they are screened, each subject will be assigned to receive 1 of 6 Metabolism-boosting beverages. Each MBB will contain 90 mg EGCG and 100 mg caffeine.

Study Type

INTERVENTIONAL

Allocation

Purpose

BASIC_SCIENCE

Masking

NONE

Enrollment

Conditions

Energy Expenditure Appetite

Interventions

Medifast Metabolism-boosting BeveragesOTHER

Medifast metabolism-boosting beverages containing 90 mg EGCG and 100 mg caffeine.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Adult males and females (age between 18 and 65) * BMI ≥18.5 - ≤ 40.0 kg/m2 * Non-smokers * No known food allergies to wheat, gluten, soy or nuts * ≤ 14 alcoholic beverages per week * No sensitivity to caffeine or green tea * No alcohol or caffeine on days when metabolism is tested * Willing and able to give informed consent * Not currently using appetite-affecting medications (e.g SSRIs, steroids, Ritalin) * Not pregnant or lactating Exclusion Criteria: * Actively dieting * Chronic uncontrolled health problems (not including obesity or controlled: type-2 diabetes, hyperlipidemia, hypertension) * History of arrhythmia, or taking anti-arrhythmic medications (e.g. propafenone) * Schizophrenia, history of bipolar disorder, current Major Depressive Disorder * Dependence on alcohol or sedative-hypnotic drugs (e.g. benzodiazepines) * Cognitive impairment severe enough to preclude informed consent * Taking weight loss or appetite-suppressant medications * Taking appetite affecting medications (e.g. SSRIs, steroids, Ritalin) * Food allergies to wheat, gluten, soy, or nuts * Sensitivity to caffeine or green tea

Locations (1)

Medifast Inc.

Owings Mills, Maryland, United States

Outcomes

Primary Outcomes

To assess the effect of MBBs on REE by performing indirect calorimetry

Time frame: 30, 60, 90, and 120 minutes

Secondary Outcomes

To assess the effect of MBBs on appetite via visual analogue scales

Time frame: 30, 60, 90, and 120 minutes

Data from ClinicalTrials.gov

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