Research team contacts

Principal Researcher:

Professor Remco Polman, School of Exercise & Nutrition Sciences, QUT

Associate Researcher:

Associate Professor Jolieke van der Pols, School of Exercise & Nutrition Sciences, QUT

Dr Erika Borkoles, School of Exercise & Nutrition Sciences, QUT

Research Student:

Digby Krastins, School of Exercise Nutrition Sciences, QUT

Industry partner:

Healthy Grain

What is the purpose of this research?

The rise of lifestyle-related chronic diseases highlights the need for practical diet and lifestyle answers to lift the burden of disease.

There is evidence that replacing refined grains with eating more whole grains, like barley, is associated with a lower risk of certain cancers, heart disease, diabetes and stroke. Increasing fibre consumption has also been shown to be a promising intervention for achieving positive improvements in body composition.

Therefore, this study aims to examine how increasing fibre consumption long term affects changes body weight and body fat percentage.

Are you looking for people like me?

Participants need to:

  • be aged between 18-50 years of age
  • live in the Brisbane region
  • have a body mass index (BMI) between 24.9-34.9 Kg.m-2.

What will you ask me to do?

This research will be conducted at QUT. You will be randomly assigned to one of three groups in which your dietary fibre intake will be increased:

  • Group 1: Receive two daily servings totalling 32 grams of fibre flakes for 12 weeks.
  • Group 2: Receive two daily servings totalling 16 grams of fibre flakes for 12 weeks.
  • Group 3: Will be provided with 16 grams of placebo products for 2 meals per day.

The product in groups 1 and 2, is a 100% natural and GMO-free wholegrain that contains twice the dietary fibre of regular grain. The product in group 3 is also a wholegrain, however, it is lower in dietary fibre than the other groups.

As part of the study, you will be asked to make two visits to QUT. Prior to the first visit you will be asked to complete a quality of life survey and food diary on three separate days.

At the first visit you will have:

  • your blood pressure taken
  • a blood sample drawn
  • provide an optional stool sample (to assess your gut microbiota)
  • waist circumference measured
  • undergo a DEXA body scan.

At the end of each week, you will be asked to provide a weekly audio/video/written update on your experiences with the interventions.

After the 12 weeks of supplementation, the measurements will be repeated. In addition, we will ask you to participate in a short interview on your experience with the study.

Your participation in this research project is entirely voluntary. If you do agree to participate you can withdraw from the research project without comment or penalty.

You can withdraw anytime during the interview. Your decision to participate or not participate will in no way impact upon your current or future relationship with QUT.

Are there any risks for me in taking part?

There are minimal risks associated with your participation in this research project associated with increasing fibre intake.

Potential risks include mild symptoms including gastrointestinal discomfort issues such as increased flatulence, stool change, abdominal discomfort (e.g., bloating, cramping, feeling too full), or changed bowel habits (e.g., urgency of bowel movements, problems with defecation).

There is a very small chance of more moderate symptoms such as dehydration or nausea. We expect that the potential risk of these symptoms are short term in nature and will quickly subside after the cessation of the consumption of the supplement. We do not expect any participant to experience any long term negative health outcomes as a result of this trial.

There is a risk of pain during the blood collection procedure and bruising (with associated pain afterwards).

This research study involves exposure to a small dose of radiation from the 2x DEXA scans. Please note that this radiation exposure is not necessary for your medical care and is for research purposes only. The dose that you will receive from participation in this research study is less than the amount you receive from these natural sources in one year.

Are there any benefits for me in taking part?

You may experience benefits from taking part in this study including:

  • improvement of bowel health
  • cholesterol levels
  • the stabilisation of blood sugar levels
  • some loss of body fat, and
  • improved overall well-being.

However, there is also a possibility there will be no health benefit in participating in this study.

It must be noted that the outcomes of the research, may contribute to the overall knowledge of the effects of fibre intake on health and well-being in humans.

This research aims to better understand how the use of increased fibre in our daily diet could be used as a safe, effective and low burden option to ultimately reduce the prevalence of a number of lifestyle-related diseases, which would be of significant benefit to society.

If you drive, we are able to reimburse the cost of parking at QUT for study visits. If you rely on public transport, we are able to reimburse the cost of public transport fares for study visits.

Will I be compensated for my time?

If you drive, we are able to reimburse the cost of parking at QUT for study visits. If you rely on public transport, we are able to reimburse the cost of public transport fares for study visits.

I am interested - what should I do next?

If you are interested in participating in this study, for details of the next step, please fill in your personal information on the survey:

Survey and information for prospective participants

If you have any questions please contact:

maxtrial@qut.edu.au or phone/text: 0416 811 400

You will then be given more information about the study to ensure that your decision and consent to participate is fully informed.

QUT Ethics Number: 2000000331