Chronic Thermogenic Dietary Supplement Consumption

Chronic Thermogenic Dietary Supplement Consumption: Effects on Body Composition, Anthropometrics, Metabolism, and Subjective Variables

This study is a randomized, double-blind, placebo-controlled trial. Healthy, exercising adult males and females will be recruited for participation. After providing informed consent, each participant will be randomized to one of three groups: 1) OxyShred thermogenic fat burner; 2) Placebo (PL); and 3) Control. All participants will complete a baseline laboratory visit consisting of assessments of body composition, anthropometry, metabolism, hemodynamics, dietary intake, exercise habits, and subjective variables. Participants in the two intervention groups (i.e., OxyShred and PL) will then be given dietary supplements for daily consumption, including OxyShred/PL and protein powder. Participants in all groups will complete the 4-week study and follow their usual training and nutrition habits - besides increased protein intake in the OxyShred and PL groups - along with questionnaires to assess compliance with the study protocol and potential side effects of supplementation. Following this 4-week period, participants will complete a second laboratory visit, where all baseline assessments will be repeated. The effects of group (OxyShred, PL, and control) and time (baseline, 4 weeks) will be statistically examined using linear models, along with appropriate post-hoc tests.

Study Overview

• Status: Completed
• Conditions: Body Weight Changes; Body Composition Changes; Anthropometric Changes; Metabolism Changes; Hemodynamic Changes
• Intervention / Treatment: Dietary supplement: Thermogenic dietary supplement; Dietary supplement: Protein supplement; Dietary supplement: Placebo supplement

Detailed Description

Overview. This study is a randomized, double-blind, placebo-controlled trial. Healthy, exercising adult males and females will be recruited for participation. After providing informed consent, each participant will be randomized to one of three groups: 1) OxyShred thermogenic fat burner; 2) Placebo (PL); and 3) Control. All participants will complete a baseline laboratory visit consisting of assessments of body composition, anthropometry, metabolism, hemodynamics, dietary intake, exercise habits, and subjective variables. Participants in the two intervention groups (i.e., OxyShred and PL) will then be given dietary supplements for daily consumption, including OxyShred/PL and protein powder. Participants in all groups will complete the 4-week study and follow their usual training and nutrition habits - besides increased protein intake in the OxyShred and PL groups - along with questionnaires to assess compliance with the study protocol and potential side effects of supplementation. Following this 4-week period, participants will complete a second laboratory visit, where all baseline assessments will be repeated. The effects of group (OxyShred, PL, and control) and time (baseline, 4 weeks) will be statistically examined using linear models, along with appropriate post-hoc tests.

Participants. Eligible participants who provide consent will be stratified based on exercise training (resistance-trained, endurance-trained, or concurrently-trained), sex (male and female), and body composition (males: 10 to 20% vs. >20%; females: 15 to 25% vs. >25%), then randomly assigned to one of the three experimental groups (OxyShred, PL, or control) in a 2:2:1 ratio. Based on preliminary power analysis and comparison with previous studies, the target sample size is 50 participants (20 Oxyshred, 20 PL, and 10 control), with approximately equal representation of males and females.

Laboratory Visits. Participants will report to the laboratory at baseline and after 4 weeks of the assigned intervention. At both laboratory visits, participants will be interviewed to confirm adherence with pre-testing guidelines, such as fasting overnight and abstaining from food and fluid ingestion. Participants will then undergo body composition testing using the methods listed below. Anthropometric variables, such as waist circumference and wasit:hip ratio, will be collected via 3-dimensional optical scanning. Resting energy expenditure and substrate oxidation (respiratory quotient) will be assessed using indirect calorimetry, and resting heart rate and blood pressure will be quantified using an automated blood pressure monitor. Questionnaires will be used to assess physical activity levels, sleep, mood, and hunger related variables. The specific body composition assessment methods to be used are ADP (air displacement plethysmography), DXA (dual-energy x-ray absorptiometry), several bioelectrical impedance techniques, several 3-dimensional scanning techniques, ultrasound, and standard assessments of height and weight. All equipment will be calibrated as recommended by the device manufacturers each day prior to use. Metabolism will be assessed using indirect calorimetry. For the on-site surveys, the following questionnaires/surveys will be used: Demographics, Exercise Habits, and Caffeine Questionnaire; the International Physical Activity Questionnaire (IPAQ); the Pittsburgh Sleep Quality Index; the Mood and Feelings Questionnaire; the Three-Factor Eating Questionnaire (R18); ASA24; and menstrual cycle questionnaire for female participants. For the daily online compliance surveys, one of two forms will be used, depending on the group assignment of the participant.

Intervention. Participants randomized to the control group will be asked to continue their normal exercise and nutrition habits without making any modification for the duration of the study. However, as an incentive and to promote equity between conditions, control group participants will receive the protein supplement provided to the other groups after completion of the study. Participants in the OxyShred and PL group will be provided their assigned supplement (OxyShred or PL powder) along with supplemental protein, all provided by EHP labs. Oxyshred is a commercially available product, and the placebo will include the same flavoring agents and ingredients but without the active ingredients. The protein product is also commercially available. Participants will be asked to consume one dose of the OxyShred/PL supplement for the first week, either upon waking or 15 minutes prior to exercise, as indicated on product directions. After the first week, participants will be asked to consume two doses per day, one upon waking and one 15 minutes prior to exercise, which is also according to product directions. On days exercise is not performed, participants will be asked to consume one dose upon waking and a second dose in the early afternoon. Protein supplements will be provided to support body composition improvements. Participants with a baseline body mass between 50 and 59.9 kg will be asked to consume one serving (providing ~25 g protein) per day; participants with a baseline body mass between 60 and 89.9 kg will be asked to consume two servings per day (providing ~50 g protein); and participants with a baseline body mass between 90 and 110 kg will be asked to consume three servings per day (providing ~75 g protein). Besides the OxyShred/PL and protein supplementation, participants in the OxyShred and PL groups will be asked to generally continue their normal nutritional practices, including the types of foods they eat and eating frequency. However, all participants will be asked to refrain from consuming additional sports supplements and weight loss supplements throughout the trial. Consumption of general health support supplements, such as multivitamins, will be allowed if they were regularly consumed prior to study commencement (typically for ≥1 month). Daily caffeine intake, beyond that provided by the supplements, will be limited to ~100 mg per day, and participants will be provided with information about quantities of common foods or beverages providing this amount (e.g., one cup of coffee, two diet sodas, etc.). Throughout the intervention, compliance and potential side effects will be monitored via questionnaire. All participants will be asked to continue their typical exercise regimen and complete questionnaires documenting their frequency, duration, and type of exercise sessions.

• Study Type: Interventional
• Enrollment (Actual): 52
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Grant M Tinsley, PhD; Phone Number: 8068345895; Email: grant.tinsley@ttu.edu

Study Locations

• United States
  • Texas
    • Lubbock, Texas, United States, 79409
      • Department of Kinesiology & Sport Management

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 40 years (Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

1. Between the ages of 18 and 40
2. Non-smoker
3. Generally healthy based on self-report, defined as no known presence of uncontrolled disease or disorder, such as cardiovascular disease, metabolic disease, cancer, or musculoskeletal disorders; no major surgeries within the past 6 months; and no history of hypertension, coronary heart disease, angina, heart attack, stroke, or diabetes.
4. For those taking prescription medication, no changes in medication in the last month, nor any known limitations on consumption of caffeine or other supplements/substances contained in the dietary supplement alongside current medications.
5. Weight stable, defined as no changes in body weight greater than 4.5 kg in the past three months.
6. Exercise-trained, defined as performing exercise at least 2 times per week, on average, for the previous 6 months. Resistance-trained, endurance-trained, and concurrently-trained individuals will be eligible.
7. Moderate caffeine consumers, defined as an average daily intake of ~40 to 200 mg/d.
8. Body mass between 50 and 110 kg.
9. Body fat percentage ≥10% in males and ≥15% in females.
10. Willingness to comply with the experimental protocol, including consumption of dietary supplements and adherence to other study procedures.
11. Willingness to abstain from consumption from other sports supplements and weight loss supplements for the duration of the study.

Exclusion Criteria:

1. Failure to meet the aforementioned inclusion criteria
2. They self-report sensitivity to caffeine or other stimulants, including feelings of nervousness, jitteriness, and shakiness following consumption of doses of caffeine used in this study (i.e., 150 to 300 mg).
3. They are pregnant, currently trying to become pregnant, or breastfeeding.
4. They report allergy to any ingredient or component of any of the dietary supplements.
5. They self-report any other medical condition or consideration that the researchers believe could reasonably make participation unsafe, including the presence of a pacemaker or other electrical implant, claustrophobia, or other relevant conditions.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Thermogenic Dietary Supplement; Arm in which the thermogenic dietary supplement is consumed.	Dietary supplement: Thermogenic dietary supplement; Daily ingestion of OxyShred thermogenic dietary supplement.; Dietary supplement: Protein supplement; Daily ingestion of protein supplement.
Placebo Comparator: Placebo Dietary Supplement; Arm in which the placebo supplement is consumed.	Dietary supplement: Protein supplement; Daily ingestion of protein supplement.; Dietary supplement: Placebo supplement; Daily ingestion of a placebo dietary supplement.
No Intervention: Control; Control arm with no intervention.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Total body fat percentage	Total body fat percentage from dual-energy x-ray absorptiometry	4 weeks
Segmental body fat percentage	Segmental body fat percentage from dual-energy x-ray absorptiometry	4 weeks
Total fat mass	Total fat mass from dual-energy x-ray absorptiometry	4 weeks
Segmental fat mass	Segmental fat mass from dual-energy x-ray absorptiometry	4 weeks
Waist circumference	Waist circumference from 3-dimensional optical imaging	4 weeks
Waist-to-hip ratio	Waist-to-hip ratio from 3-dimensional optical imaging	4 weeks
Body mass	Body mass from scale	4 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Resting energy expenditure	Resting energy expenditure from indirect calorimetry	4 weeks
Respiratory quotient	Respiratory quotient from indirect calorimetry	4 weeks
Resting heart rate	Resting heart rate from automated sphygmomanometer	4 weeks
Resting blood pressure	Resting blood pressure from automated sphygmomanometer	4 weeks
Sleep quality	Sleep quality as assessed by the Pittsburgh Sleep Quality Index	4 weeks
Mood ratings	Mood ratings as assessed by the Mood and Feelings Questionnaire	4 weeks
Eating behaviors	Eating behaviors as assessed by the Three-Factor Eating Questionnaire	4 weeks
Dietary intake	Dietary intake as assessed by the ASA24 recall method	4 weeks
Total lean soft tissue	Total lean soft tissue from dual-energy x-ray absorptiometry	4 weeks
Segmental lean soft tissue	Segmental lean soft tissue from dual-energy x-ray absorptiometry	4 weeks
Limb circumferences	Limb circumferences from 3-dimensional optical imaging	4 weeks
Side effects	Self-reported side effects	4 weeks

Collaborators and Investigators

• Sponsor: Texas Tech University
• Collaborators: EHP Labs

Study record dates

Study Major Dates

• Study Start (Actual): January 17, 2023
• Primary Completion (Actual): May 15, 2023
• Study Completion (Actual): May 15, 2023

Study Registration Dates

• First Submitted: November 9, 2022
• First Submitted That Met QC Criteria: November 9, 2022
• First Posted (Actual): November 17, 2022

Study Record Updates

• Last Update Posted (Estimated): October 10, 2023
• Last Update Submitted That Met QC Criteria: October 9, 2023
• Last Verified: October 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Body Weight; Body Weight Changes
• Other Study ID Numbers: IRB2022-933

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No