Weight Stigma in Women Who Are Obese: Assessing How an Acute Exposure to Stigma Negatively Impacts Cardiovascular Health

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

49 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-11-22

Study Completion Date

2019-01-11

Brief Summary

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The current study examined the influence of an acute weight stigma exposure on cardiovascular reactivity among women with obesity and high blood pressure and women with obesity and normal blood pressure.

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Detailed Description

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The current study examined the influence of two video exposures, one containing scenes of weight stigma (STIGMA) and the other non-stigmatizing neutral (NEUTRAL) scenes, on cardiovascular reactivity as assessed by resting BP and ambulatory blood pressure (ABP) and heart rate (HR), among women with obesity and high BP (HBP) or normal BP (NBP). The investigators hypothesized that as a result of STIGMA compared to NEUTRAL, cardiovascular reactivity would be significantly greater immediately upon watching the video and persist outside of the laboratory over ambulatory conditions in women with obesity and HBP compared to women with obesity and NBP.

Conditions

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Stigma, Social Obesity Cardiovascular Disease Risk Factor Blood Pressure

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Participants were randomized using www.randomization.com to either STIGMA at Visit 2 and NEUTRAL at Visit 3, or NEUTRAL at Visit 2 and STIGMA at Visit 3.

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Participants

Due to the nature of the experimental manipulation in this study and to maintain validity, mild deception was necessary. Participants were told that the study was examining BP, HR, mood, and behavioral responses to various forms of media and were not informed specifically of the purpose until after they completed the study. In order to verify that the participants were unaware that their cardiovascular reactivity to a weight stigma exposure was being measured, a manipulation check was implemented wherein participants were asked to report what they believed the study purpose to be. No participants reported the true purpose of the study during the manipulation check. At the conclusion of the study, participants were debriefed about the true purpose of the study.

Study Groups

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High Blood Pressure

Ambulatory BP measurement was used to confirm the laboratory BP group classification according to the European Society of Hypertension. Participants were placed in the high blood pressure (HBP) group if they met any of the following criteria: 1) 19-hour average systolic BP/diastolic BP (SBP/DBP) \> 130/80 mmHg, 2) daytime (awake) average SBP/DBP \> 135/85 mmHg, or 3) nighttime (sleep) average SBP/DBP \> 120/70 mmHg.

Group Type EXPERIMENTAL

Stigma Video Exposure

Intervention Type BEHAVIORAL

The participants watched a 10 minute video on a computer screen that consisted of brief clips from popular television shows that depicted women with overweight and obesity and evoked negative weight-based stereotypes (e.g., clumsy, loud, and lazy). Both the high blood pressure and normal blood pressure arms participated in this intervention.

Neutral video exposure

Intervention Type BEHAVIORAL

The participants watched a 10 minute video on a computer screen that consisted of a series of clips depicting neutral scenes (e.g., insurance commercials). Both the high blood pressure and normal blood pressure arms participated in this intervention.

Normal Blood Pressure

Participants were placed in the normal BP (NBP) group if they met all of the following criteria: 1) 19-hour average SBP/DBP \< 130/80 mmHg, 2) daytime (awake) average SBP/DBP \< 135/85 mmHg, and 3) night-time (asleep) average SBP/DBP \<120/70 mmHg.

Group Type EXPERIMENTAL

Stigma Video Exposure

Intervention Type BEHAVIORAL

The participants watched a 10 minute video on a computer screen that consisted of brief clips from popular television shows that depicted women with overweight and obesity and evoked negative weight-based stereotypes (e.g., clumsy, loud, and lazy). Both the high blood pressure and normal blood pressure arms participated in this intervention.

Neutral video exposure

Intervention Type BEHAVIORAL

The participants watched a 10 minute video on a computer screen that consisted of a series of clips depicting neutral scenes (e.g., insurance commercials). Both the high blood pressure and normal blood pressure arms participated in this intervention.

Interventions

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Stigma Video Exposure

The participants watched a 10 minute video on a computer screen that consisted of brief clips from popular television shows that depicted women with overweight and obesity and evoked negative weight-based stereotypes (e.g., clumsy, loud, and lazy). Both the high blood pressure and normal blood pressure arms participated in this intervention.

Intervention Type BEHAVIORAL

Neutral video exposure

The participants watched a 10 minute video on a computer screen that consisted of a series of clips depicting neutral scenes (e.g., insurance commercials). Both the high blood pressure and normal blood pressure arms participated in this intervention.

Intervention Type BEHAVIORAL

Other Intervention Names

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STIGMA NEUTRAL

Eligibility Criteria

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Inclusion Criteria

* Premenopausal
* BMI \> 30 kg/m2
* No other known chronic cardiovascular or metabolic diseases besides hypertension

Exclusion Criteria

* Pregnant or planned on becoming pregnant
* Took medications that may have affected the primary outcome of BP (e.g., stimulants for attention deficit hyperactivity disorder or steroids for asthma)
* Currently using tobacco products
* Diagnosed with an eating disorder

Minimum Eligible Age

20 Years

Maximum Eligible Age

50 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes