Randomized Controlled Experiment of Dieting in Pairs

Status Completed

Clinical Trial Summary

This study examined how dieting with a partner affects weight loss, diet adherence, psychological well-being, and cortisol.

Clinical Trial Description

The goal of this study was to understand how different types of diet "buddy systems" affect diet success and outcomes related to dieting. Pairs of non-romantic cohabiting female dyads (i.e. roommates) were randomly assigned to one of the following three-week manipulations: (a) neither roommate dieted, (b) one roommate was assigned to a 1200-calorie/day diet and the other ate normally, (c) both roommates were assigned to a 1200-calorie/day diet. Both pre- and post diet, participants were weighted and measured, filled out psychological questionnaires, and provided two days of diurnal salivary cortisol samples. During the three-week manipulation period, participants who were assigned to diet recorded all calories consumed on each day. This study tested whether dieting in a pair would lead to improved diet outcomes in terms of adherence and weight loss, changes in psychological well-being, and changes in cortisol. ;

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Basic Science

Related Conditions & MeSH terms

Dietary Modification

Clinical Trial Details

NCT number	NCT02898844
Study type	Interventional
Source	University of California, Los Angeles
Contact
Status	Completed
Phase	N/A
Start date	October 2013
Completion date	December 2014

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