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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT00562393
Registration number
NCT00562393
Ethics application status
Date submitted
20/11/2007
Date registered
22/11/2007
Date last updated
14/07/2015
Titles & IDs
Public title
Effects of Excess Energy Intake on Metabolic Risk
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Scientific title
Effects of Excess Energy Intake on Metabolic Risk
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Secondary ID [1]
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427639
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Secondary ID [2]
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EXCESS
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Universal Trial Number (UTN)
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Trial acronym
EXCESS
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Insulin Resistance
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Condition category
Condition code
Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Other interventions - Nutritional
Experimental: Overfeeding - 4 weeks of 1250 kcal added daily
Other interventions: Nutritional
Overfeeding high fat diet for 28 days
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Intervention code [1]
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Other interventions
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Insulin sensitiviy by hyperinsulinemic clamp
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Assessment method [1]
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Timepoint [1]
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28-days
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Secondary outcome [1]
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Fat oxidation (whole body RQ and C-14 palmitate), mitochondrial function
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Assessment method [1]
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Timepoint [1]
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28-days
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Eligibility
Key inclusion criteria
* Sedentary (<60 min formal exercise per week)
* Aged 20-65 years
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Minimum age
20
Years
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Maximum age
65
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
* Personal history of diabetes, cardiovascular disease or hypertension
* Recent weight change (larger than 4kg in the past 3 months)
* Smoking
* Regular use of medications, except oral contraceptives
* Individuals with alcoholism or other substance abuse
* Pregnancy or lactation, women who are planning to become pregnant or who are not using adequate measures of birth control.
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Study design
Purpose of the study
Other
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Allocation to intervention
NA
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people assessing the outcomes
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Intervention assignment
Single group
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/04/2007
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/12/2009
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Sample size
Target
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Accrual to date
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Final
41
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Garvan Institute of Medical Research - Darlinghurst
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Recruitment postcode(s) [1]
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2010 - Darlinghurst
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Funding & Sponsors
Primary sponsor type
Other
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Name
Garvan Institute of Medical Research
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The prevalence of obesity has reached epidemic proportions and is associated with the development of insulin resistance and type 2 diabetes (T2DM). A unifying theme has emerged over the past few years suggesting that lipid oversupply to metabolic organs responsible for glucose regulation leads to insulin resistance. Fitting with this, we and others have shown that increased lipid accumulation within skeletal muscle and/or liver is associated with impaired glucose uptake. However, the underlying mechanisms that mediate changes in muscle lipid metabolism are not yet known. The overall aim of this project is to examine metabolic effects of experimental weight gain in lean and overweight individuals with and without a genetic predisposition to type 2 diabetes. We hypothesise that lean subjects will increase fatty acid oxidation and upregulate mitochondrial oxidative capacity in muscle following overfeeding to protect against body weight gain and insulin resistance, but overweight subjects with a genetic predisposition to T2DM will have a defect in this ability.
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Trial website
https://clinicaltrials.gov/study/NCT00562393
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Trial related presentations / publications
Tam CS, Viardot A, Clement K, Tordjman J, Tonks K, Greenfield JR, Campbell LV, Samocha-Bonet D, Heilbronn LK. Short-term overfeeding may induce peripheral insulin resistance without altering subcutaneous adipose tissue macrophages in humans. Diabetes. 2010 Sep;59(9):2164-70. doi: 10.2337/db10-0162. Epub 2010 Jun 14. Samocha-Bonet D, Campbell LV, Viardot A, Freund J, Tam CS, Greenfield JR, Heilbronn LK. A family history of type 2 diabetes increases risk factors associated with overfeeding. Diabetologia. 2010 Aug;53(8):1700-8. doi: 10.1007/s00125-010-1768-y. Epub 2010 May 12. Sato K, Samocha-Bonet D, Handelsman DJ, Fujita S, Wittert GA, Heilbronn LK. Serum sex steroids and steroidogenesis-related enzyme expression in skeletal muscle during experimental weight gain in men. Diabetes Metab. 2014 Dec;40(6):439-44. doi: 10.1016/j.diabet.2014.03.006. Epub 2014 Apr 30. Samocha-Bonet D, Tam CS, Campbell LV, Heilbronn LK. Raised circulating fetuin-a after 28-day overfeeding in healthy humans. Diabetes Care. 2014;37(1):e15-6. doi: 10.2337/dc13-1728. No abstract available. Heilbronn LK, Coster AC, Campbell LV, Greenfield JR, Lange K, Christopher MJ, Meikle PJ, Samocha-Bonet D. The effect of short-term overfeeding on serum lipids in healthy humans. Obesity (Silver Spring). 2013 Dec;21(12):E649-59. doi: 10.1002/oby.20508. Epub 2013 Jul 29. Heilbronn LK, Campbell LV, Xu A, Samocha-Bonet D. Metabolically protective cytokines adiponectin and fibroblast growth factor-21 are increased by acute overfeeding in healthy humans. PLoS One. 2013 Oct 18;8(10):e78864. doi: 10.1371/journal.pone.0078864. eCollection 2013. Samocha-Bonet D, Campbell LV, Mori TA, Croft KD, Greenfield JR, Turner N, Heilbronn LK. Overfeeding reduces insulin sensitivity and increases oxidative stress, without altering markers of mitochondrial content and function in humans. PLoS One. 2012;7(5):e36320. doi: 10.1371/journal.pone.0036320. Epub 2012 May 7. Elshorbagy AK, Samocha-Bonet D, Jerneren F, Turner C, Refsum H, Heilbronn LK. Food Overconsumption in Healthy Adults Triggers Early and Sustained Increases in Serum Branched-Chain Amino Acids and Changes in Cysteine Linked to Fat Gain. J Nutr. 2018 Jul 1;148(7):1073-1080. doi: 10.1093/jn/nxy062.
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Public notes
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Contacts
Principal investigator
Name
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Leonie K Heilbronn, PhD
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Address
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Garvan Institute
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Country
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Phone
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Fax
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Email
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Contact person for public queries
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Type
Citations or Other Details
Journal
Tam CS, Viardot A, Clement K, Tordjman J, Tonks K,...
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Journal
Samocha-Bonet D, Campbell LV, Viardot A, Freund J,...
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Sato K, Samocha-Bonet D, Handelsman DJ, Fujita S, ...
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Samocha-Bonet D, Tam CS, Campbell LV, Heilbronn LK...
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Heilbronn LK, Coster AC, Campbell LV, Greenfield J...
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Heilbronn LK, Campbell LV, Xu A, Samocha-Bonet D. ...
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Samocha-Bonet D, Campbell LV, Mori TA, Croft KD, G...
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Results not provided in
https://clinicaltrials.gov/study/NCT00562393
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