The Effect of Short-term Supplementation of OliPhenolia® on Fat Oxidation

Overview

There is current research interest in the use of fruit and plant-based food products containing high levels of natural antioxidants and their impact on exercise, which may be particularly beneficial for recreationally or low-active populations. One such product is an olive extract drink (called OliPhenolia®) produced by Fattoria La Vialla (an organic farm based in Northern Italy) and commercially available for the general public. Whilst previous research from the investigators (at Anglia Ruskin University) using this product has demonstrated potential antioxidant benefits and reduced oxygen cost during aerobic exercise, there are to date no studies investigating whether the short-term consumption of OliPhenolia® can benefit fat oxidation during exercise or whether such effects can be further enhanced employing a pre workout caffeinated beverage. Therefore the aim of this study is two-fold: i) to assess the impact of short-term supplementation (8 days) of OliPhenolia® relative to body mass on fat oxidation during aerobic cycling exercise in comparison to placebo in healthy recreationally active volunteers; and ii) whether potential benefits of OliPhenolia® on fat oxidation are enhanced with a pre-workout caffeinated beverage in comparison to placebo in healthy recreationally active volunteers.

This exploratory study will involve initial recruitment of approximately 30-40 healthy volunteers to undertake an initial study briefing pre-screening health questionnaire, informed written consent and familiarisation to exercise equipment, before returning to the human physiology laboratory at Anglia Ruskin University on a separate occasion (Visit 1) to undertake a standard exercise test for maximal fitness capacity. Following this, Visit 2 will see participants undertake a standard fat oxidation exercise test (aerobic exercise on a cycle ergometer) to ascertain maximal fat oxidation (Fatmax) with increasing exercise intensity, as well as a steady state exercise bout (30mins at FATmax). After this participants will begin a short-term (8 days) supplementation period of either OliPhenolia or Placebo before returning for a follow up fat oxidation assessment (Visit 3) as above. Fat oxidation will be assessed by standard respiratory measures (breath to breath for oxygen and carbon dioxide). On the follow up test (Visit 3), a pre-exercise workout drink will be provided containing either caffeine flavoured water or placebo. This is to assess whether fat oxidation can be enhanced from short-term polyphenol supplementation (OliPhenolia) with or without additional caffeine prior to exercise. Participants will therefore be randomised into 1 of 4 groups for this study (Placebo product for 8 days + placebo beverage at follow up; Oliphenolia for 8 days + placebo beverage at follow up; and OliPhenolia for 8 days plus caffeinated beverage at follow up; and placebo product for 8 days plus caffeinated beverage at follow up).