Investigating the Effects of a High GI Versus a Low GI Diet on Hepatic Metabolism and Satiety Levels in Healthy Subjects
1 other identifier
interventional
8
1 country
1
Brief Summary
The aim of this study is to investigate the effect of a one week high versus low glycaemic index dietary intervention on hepatic glycogen and lipid levels and blood hormone levels in a two way cross overs study and to see if there is any correlation between this and satiety or appetite.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable healthy
Started Feb 2013
Typical duration for not_applicable healthy
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
February 1, 2013
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 1, 2013
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2014
CompletedFirst Submitted
Initial submission to the registry
January 30, 2015
CompletedFirst Posted
Study publicly available on registry
June 26, 2015
CompletedJune 26, 2015
June 1, 2015
5 months
January 30, 2015
June 23, 2015
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Liver glycogen
Liver glycogen content was determined by Magnetic Resonance Spectroscopy using the distinct 13C signals from the glycogen polymer. The glycogen signal resonates at 101.4 ppm, and was calibrated using an external reference peak situated in the centre of the coil (175ppm) and quantified with reference to an ex vivo glycogen acquisition.
7 days
Secondary Outcomes (1)
Liver lipids
7 days
Other Outcomes (3)
Blood glucose
7 days
Satiety ratings
7 days
Blood hormones
7 days
Study Arms (2)
High GI diet
EXPERIMENTAL8 Healthy subjects will be assessed at the start and end of a 7 day high glycaemic in diet following the appropriate High/Low Glycaemic index test breakfast.
Low GI diet
EXPERIMENTAL8 Healthy subjects will be assessed at the start and end of a 7 day low glycaemic in diet following the appropriate High/Low Glycaemic index test breakfast.
Interventions
High/Low Glycaemic index test breakfast on test days for a High/Low Glycaemic index 7-day diet
Eligibility Criteria
You may qualify if:
- Male
- Caucasian
- Self-reported non-athletic but healthy: not carrying out strenuous exercise (no high sweat, out of breath, high heart rate activities and less than 2 hours moderate exercise a week), moderate drinkers (less than 3 units a day), no smokers
- Routinely eating 3 meals a day
- Stable weight
- Age ≥ 18 and ≤ 35
- Body mass index (BMI - weight / squared height ) ≥ 20.0 and ≤ 27.0 kg/m2
- Suitable for MRI scanning (e.g., absence of metal implants, infusion pumps and pacemakers) as assessed by the attached MRI safety questionnaire.
- Suitable for blood samples and cannula insertion (e.g., no aversion to needles)
- Willing to follow both prescribed diet plans
- Not taking any concurrent medication
You may not qualify if:
- No diabetics or other metabolic disorders (e.g. insulin resistance, thyroid dysfunction)
- No volunteers with liver disease
- No clotting disorders
- No Participation in another nutritional or biomedical trial 3 months before the pre-study examination or during the study.
- No use of any medically or self-prescribed diet from the moment of pre-study examination till the end of the study
- Taking prescription medication or any other drugs that may influence liver function or glucose and energy metabolism.
- Any allergy or food intolerance
- Unsuitable for MR scanning (i.e. have pacemakers and/or medical implants)
- The subject is an employee of Unilever or the site conducting the study.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Sir Peter Mansfield Magnetic Resonance Centre, University of Nottingham
Nottingham, Nottinghamshire, NG7 2QX, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Penny Gowland, PhD
School of Physics & Astronomy, University of Nottingham
- PRINCIPAL INVESTIGATOR
Robin Spiller, MD
School of Medicine, University of Nottingham
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- BASIC SCIENCE
- Intervention Model
- CROSSOVER
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 30, 2015
First Posted
June 26, 2015
Study Start
February 1, 2013
Primary Completion
July 1, 2013
Study Completion
December 1, 2014
Last Updated
June 26, 2015
Record last verified: 2015-06