Obesity Clinical Trial
Official title:
Effect of Glucomannan Supplementation on Body Weight in Overweight and Obese Children: A Randomized Controlled Trial
Glucomannan (GNN), a water-soluble dietary fiber derived from the plant Amorphophallus konjac, is marketed for weight reduction. The exact mechanisms by which GNN might exert its actions are unclear. Nonetheless, it has been shown that GNN slows gastric emptying by forming a viscous gel of large volume, which increases the feeling of satiety. Current evidence on the effectiveness of GNN for weight reduction is sparse, and well-designed trials performed in children are needed to assess the efficacy of this modality. We aim to systematically evaluate the efficacy of GNN consumption for the management of overweight and obesity in children.
Methods and analysis
Children aged 6 to 17 years with overweight and obesity (based on the WHO growth criteria)
will be randomly assigned to receive GNN or placebo (maltodextrin) (both at a dose of 3
g/day) for 3 months and will be followed up for 3 months. Prior to the intervention, all
children will receive dietetic advice, and they will be encouraged to engage in physical
activity. The primary outcome measure will be the BMI-for-age z-score difference between the
groups at the end of the intervention.
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