Clinical trial NCT05684263: The Effects of Weight Science and Nutrition Education on Weight Control Beliefs and Disordered Eating.
Official title: An Experimental Study of the Effects of Weight Science and Nutrition Education on Weight Control Beliefs and Disordered Eating in a Non-clinical Female Sample.
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Body Image
Eating, Healthy
Keywords: Body Image
Weight control beliefs
Diet, Weight Loss
Eating, Healthy
Lead sponsor: St. Joseph's Healthcare Hamilton
Sponsor class: OTHER
First posted: 2023-01-13
Enrollment: 150
Sex: FEMALE
Minimum age (years): 17
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: There are three conditions in the study, which correspond to what education the participant will receive. The participant will be randomly assigned to one of the three conditions.
Primary purpose: OTHER

Brief summary: People have different beliefs about controlling their weight. Individuals who believe they should control their weight are more likely to have poor body image, low self-esteem and disordered eating. Individuals who believe they should aim for a healthy lifestyle and accept their natural weight have better body image, better self-esteem and less disordered eating. This study investigates the impact of three types of education on participants' beliefs about controlling weight: 1) education about the body's natural regulation of weight; or 2) education about healthy nutrition; or 3) education about both the body's regulation of weight and healthy nutrition. The study will also investigate whether changing participants' beliefs about controlling weight impacts participants' body satisfaction, feelings about themselves and intention to diet. It is predicted that teaching both about the body's regulation of weight and healthy eating will decrease participants' belief in personal control over weight, and increase participants' belief in striving for a healthy lifestyle and accepting their natural weight. In turn, these changes in weight control beliefs are expect to predict improved body satisfaction, feelings about themselves and a lower intention to diet.

Detailed description: Participants will be randomly assigned to one of three conditions: 1) weight science + control (sleep education); 2) control (sleep education) + healthy nutrition education; or 3) weight science + healthy nutrition education. Participants will be randomly assigned to one of the three conditions by an algorithm in REDCap. The same procedure will be used for each condition, with the exception of what education is provided.

After the online consent form is completed, participants will be automatically redirected to the study questionnaires in REDCap. Participants will complete a package of questionnaires pre- and post- intervention measuring demographic information, physical activity, knowledge of weight science, weight control beliefs, self-esteem, restrained eating, body appreciation, self-compassion for weight and shape and fear of self-compassion for weight and shape. Participants will complete the package of questionnaires prior to watching two educational videos embedded into the REDCap project, and then complete the same package of questionnaires again.

After watching the educational videos and completing the study questionnaires, participants will receive a copy of the debriefing form, which provides further information about the study purpose, independent and dependent variables, local mental health resources, and contact information for the LPI. The debriefing form will be emailed to participants via McMaster Outlook using the email encryption function. If participants do not complete the study questionnaires, the debriefing form will be sent to participants after their study time slot has closed.

The data will be collected and stored through the secure online data collection platform REDCap, which is managed by St. Joseph's Healthcare Hamilton. REDCap is a secure, encrypted data collection platform that requires two-factor authentication for access to study data. REDCap is located within the secure internal SJHH network, and is protected by firewall software (Checkpoint software).

Eligibility criteria: Inclusion Criteria:

* 17 years of age or older
* Female
* Normal hearing with or without listening device

Exclusion Criteria:

* Currently diagnosed with an eating disorder
* Has received treatment for an eating disorder at any point in time

Primary outcomes:
measure: Change in measure of the Belief in Controlling Weight scale from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
measure: Change in measure of the Belief in Controlling Lifestyle scale from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
Secondary outcomes:
measure: Change in measure of Self-Esteem from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
measure: Change in measure of Intentions to engage in dietary restraint from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
measure: Change in measure of Body Appreciation from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
measure: Change in measure of Fear of Self-Compassion for Weight and Shape from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
measure: Change in measure of Self-Compassion for Weight & Shape from baseline to post-intervention
timeFrame: Baseline (questionnaires administered prior to watching videos) and Post-Intervention (questionnaires administered after watching the videos) approximately 1 hour after completing baseline questionnaires.
Other outcomes:
Locations:
Study officials:
affiliation: St. Joseph's Healthcare Hamilton
name: Michele Laliberte, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Tylka TL, Wood-Barcalow NL. The Body Appreciation Scale-2: item refinement and psychometric evaluation. Body Image. 2015 Jan;12:53-67. doi: 10.1016/j.bodyim.2014.09.006. Epub 2014 Oct 21.
citation: Fairburn CG, Beglin SJ. Assessment of eating disorders: interview or self-report questionnaire? Int J Eat Disord. 1994 Dec;16(4):363-70.
citation: Craig C, Marshall A, Sjostrom M, Bauman A, Lee P, Macfarlane D, Lam T, & Stewart S. International physical activity questionnaire-short form. Journal of American College Health. 2017; 65(7): 492-501.
citation: Laliberte MM, Newton M, McCabe R, & Mills JS. Controlling Your Weight Versus Controlling Your Lifestyle: How Beliefs about Weight Control Affect Risk for Disordered Eating, 10534_2006_9060_Fig3_HTML.gif Dissatisfaction and Self-esteem. Cognitive Therapy and Research. 2007; 31(6): 853-869.
citation: Rosenberg M. Society and the Adolescent Self-Image (Revised edition). Wesleyan University Press. 1989.