Metabolic and weight loss effects of long-term dietary intervention in obese patients: four-year results

Auteur(s) :
Sadler GR., Ditschuneit HH., Flechtner-mors M., Johnson TD., Suchard MA.
Date :
Août, 2000
Source(s) :
OBESITY RESEARCH. #8:5 p399-402
Adresse :
"DITSCHUNEIT HH,UNIV ULM,DEPT INTERNAL MED;ROBERT KOCH STR 8;D-89081 ULM, GERMANY.herwig.ditschuneit@medizin.uni-ulm.de "

Sommaire de l'article

Objective:
To investigate the contribution of meal and snack replacements for long-term weight maintenance and risk factor reduction in obese patients.

Research Methods and Procedures:
Prospective, randomized, two-arm, parallel intervention for 12 weeks followed by a prospective single-arm 4-year trial in a University Hospital clinic. One hundred patients, >18 years old and with a body mass index > 25 and less than or equal to 40 kg/m², were prescribed a 1200 to 1500 kcal/d control diet (Group A) or an isoenergetic diet, including two meal and snack replacements (vitamin- and mineral-fortified shakes, soups, and bars) and one meal high in fruits and vegetables (Group B). Following a 3 months of weight loss, all patients were prescribed the same energy-restricted diet (1200 to 1500 kcal) with one meal and one snack replacement for an additional 4 years.

Results:
All 100 patients were evaluated at 12 weeks. Mean percentage weight loss was 1.5 +/- 0.4% and 7.8 +/- 0.5% (mean +/- SEM) for Groups A and B, respectively. At 12 weeks systolic blood pressure, plasma triacylglycerol, glucose, and insulin concentrations were significantly reduced in Group B, whereas no changes occurred in Group A. After 4 years, 75% of the patients were evaluated. Total mean weight loss was 3.2 +/- 0.8% for Group A and 8.4 +/- 0.8% (mean +/- SEM) for Group B. Both groups showed significant improvement in blood glucose and insulin (p < 0.001), but only Group B showed significant improvement in triacylglycerol and systolic blood pressure compared to baseline values (p < 0.001)

Discussion:
Providing a structured meal plan via vitamin-and mineral-fortified liquid meal replacements is a safe and effective dietary strategy for obese patients. Long-term maintenance of weight loss with meal replacements can improve certain biomarkers of disease risk.

Source : Pubmed
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