A Study to See if an Energy Drink With Caffeine and Green Tea Increases Fat Burning When Exercising

Официальное название

Influence of Caffeine and Green Tea Extracts Consumption on Basal, Peri- and Post-exercise Fat Oxidation

Обзор

The goal of this study is to evaluate the influence of consuming a drink containing a combination of caffeine and green tea extracts on fat oxidation responses at rest, during and after a period of endurance type exercise.

Подробное описание

This study investigates whether consuming an energy drink containing caffeine and green tea extract before exercise increases fat burning (oxidation) compared with a placebo drink. Healthy, moderately active adults will attend three visits at clinic over 3-5 weeks. The first visit determines each participant's individual exercise intensity that maximises fat use during cycling. At two subsequent visits, participants will consume either the active drink or a placebo before completing a 30-minute cycling session at their personalised intensity. Fat and carbohydrate use, heart rate, blood pressure, and subjective responses will be measured at rest, during exercise, and after exercise using a double-blind, crossover design.

Вмешательства

• Пищевая добавка Active (Green tea and caffeine)
  Two 355 mL cans of "XS Energy + BURN" drink containing caffeine and green tea extract.
• Другое Placebo
  Two 355 mL cans of placebo drink but without the active ingredients (caffeine and green tea extract).

Первичные конечные точки

• Fat oxidation as measured by indirect calorimetry [Срок оценки: Baseline to 30 mins post exercise]

Вторичные конечные точки (3)

• Carbohydrate oxidation; indirect calorimetry [Срок оценки: Baseline to 30 mins post exercise]
• Respiratory exchange ratio; indirect calorimetry [Срок оценки: Baseline to 30 mins post exercise]
• Exercise efficiency; indirect calorimetry [Срок оценки: Baseline to 30 mins post exercise]

Критерии участия

Критерии включения

• Passing the Exercise and Sport Science Australia adult pre-exercise screening system (APSS) stage 1 \& 2 (see appendix 4).
• Between the ages of 18 and 45,
• Not sedentary, and not completing more than 150 minutes of low and/or moderate and/or or vigorous intensity endurance exercise a week,
• Ability to commit to in principle fulfilment of all 3 trial visits,
• No history of coagulopathy e.g., DVT, stroke,
• No known heart disease,
• No known pancreatic insufficiency,
• No known inflammatory bowel disease, or prior bowel resection or bypass surgery (excluding gastric banding and sleeve),
• BMI of 22.0 to 34.9 kg/m2,
• No known allergies to caffeine or green tea extract,
• No known type I or II diabetes,
• No uncontrolled concurrent illness,
• No known current pregnancy or breastfeeding women
• No current regular consumption of supplements (>2 times a week) or foods and drinks containing caffeine and/or green tea extracts (>2 times per day, weekly).
• Agree not to consume caffeine for 12-hours prior to the clinic visit.

Критерии исключения

• Triggering any of the exclusion screening criteria as outlined below, and in compliment with the Exercise and Sport Science Australia adult pre-exercise screening system (APSS).
• Under the age of 18 or over the age of 45,
• Sedentary, or completing over 150 minutes of low and/or moderate and/or or vigorous intensity endurance exercise a week,
• Inability to commit to in principle fulfilment of all 3 trial visits,
• History of coagulopathy e.g., DVT, stroke,
• Known heart disease,
• Known pancreatic insufficiency,
• Known inflammatory bowel disease, or prior bowel resection or bypass surgery (excluding gastric banding and sleeve),
• BMI < 22.0 or > 34.9 kg/m2,
• Known allergies to caffeine or green tea extract,
• Known type I or II diabetes,
• Uncontrolled concurrent illness,
• Taking GLP-1 agonists, caffeine, or any other medication known to affect metabolism.
• Known current pregnancy or breastfeeding women.
• Currently regularly consuming supplements, foods or drinks containing a caffeine and green tea extract blend, or not willing to abstain for the study

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Распределение

Рандомизированное

Модель

Перекрёстный дизайн

Маскирование

Четверное слепое

Основная цель

Лечение

Центры проведения

Австралия · 1 центр

• Griffith University, Gold Coast Campus — Southport

Идентификаторы

NCT: NCT07434752 · GRIFEX

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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