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Improvements in insulin resistance caused by weight loss interventions

The effects of very-low calorie diet vs gastric bypass surgery on the metabolic profile of obese patients.

Status
Suspended
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12605000395639
Enrollment
40
Registered
2005-09-14
Start date
2006-03-09
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Forty volunteers will be randomised to receive either very-low calorie diet (VLCD)/Optifast or normal feeding regime prior to gastric bypass surgery. Twenty of these volunteers will be randomised to receive VLCD/Optifast by nasogastric tube for six days after surgery. Changes in insulin resistance will be measured by an insulin tolerance test before and after each intervention.

Sponsors

The Wakefield clinic
Lead SponsorHospital

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
0 to No maximum
Healthy volunteers
No

Inclusion criteria

Patients presenting for gastric bypass and,BMI >35

Exclusion criteria

Significant known heart disease; significant renal disease; known liver disease; Type 1 diabetes; and,Type 2 diabetes for more than 5 years.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026