Viewing Study NCT00328744



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Study NCT ID: NCT00328744
Status: COMPLETED
Last Update Posted: 2012-04-20
First Post: 2006-05-19

Brief Title: Reducing Snack Variety in Weight Loss Treatment
Sponsor: The Miriam Hospital
Organization: The Miriam Hospital

Study Overview

Official Title: Reducing Snack Food Variety During Obesity Treatment
Status: COMPLETED
Status Verified Date: 2008-10
Last Known Status: None
Delayed Posting: No
If Stopped, Why?: Not Stopped
Has Expanded Access: False
If Expanded Access, NCT#: N/A
Has Expanded Access, NCT# Status: N/A
Acronym: None
Brief Summary: The rising prevalence of obesity in the United States is believed to be due to increased exposure to adverse environmental factors such as food portion sizes and increased dietary variety Although decreasing portion sizes is a strategy used in weight loss programs research has not studied the effects of decreasing dietary variety Cross-sectional studies show a positive association between variety and body weight and in our own studies the investigators have shown that greater reductions in the number of different snack foods ie cookies chips consumed predicted greater decreases in overall caloric and fat intake and greater weight loss Limiting variety may reduce intake through long-term sensory-specific satiety andor monotony Reducing dietary variety is a novel dietary approach with the potential to improve long-term weight loss which has not been studied as a clinical strategy in obesity research The objective of this application is to conduct a randomized controlled trial of a behavioral weight loss intervention limiting the number of different snack foods consumed Two hundred overweight and obese participants will be randomized to a standard behavioral intervention Standard or to a standard behavioral intervention that also limits the number of different snack foods consumed Limited Variety Both conditions will receive an 18-month standard behavioral intervention using behavioral techniques ie self-monitoring to change eating behaviors Participants in the Limited Variety condition will also limit variety in snack foods to only two chosen snack foods throughout the intervention Measures of weight snack food consumption and hedonics and diet satisfaction will be taken at 0 6 12 and 18 months This investigation will determine

1 if the Limited Variety condition produces greater weight loss than the Standard condition at 18 months
2 if the Limited Variety condition consumes fewer servings and calories from snack foods than the Standard condition
3 if limiting snack food variety produces long-term sensory-specific satiety andor monotony

Relevance Experimental studies show that limiting dietary variety profoundly reduces intake To date there is no dietary prescription that has been tested that capitalizes on the effect of variety on intake that can be maintained This will be the first investigation to examine methods of manipulating dietary variety that can be adhered to over time and that influence intake weight loss and weight loss maintenance
Detailed Description: None

Study Oversight

Has Oversight DMC: None
Is a FDA Regulated Drug?: None
Is a FDA Regulated Device?: None
Is an Unapproved Device?: None
Is a PPSD?: None
Is a US Export?: None
Is an FDA AA801 Violation?: None