Improving the Experience of Exercise Among Individuals With Internalized Weight Bias Using Acceptance-based Strategies

Lifespan

Status: Unknown

Conditions: Overweight and Obesity

Treatments: Behavioral: Acceptance and Commitment; Behavioral: Multi-Health Behavior

Study type: Interventional

Funder types: Other

Identifiers

NCT05119504

1689962

Details and patient eligibility

About

The goal of this study is to test whether an acceptance based intervention can modify the relationship between heart rate and perceived exertion/negative during physical activity among individuals who have a high degree of internalized weight bias.

Full description

In this two-phase pilot, we will first test in a controlled setting whether an acceptance-based intervention can modify the relationship between Heart Rate and perceived exertion/negative affect during moderate intensity physical activity among individuals high in internalized weight bias (Phase 1) and then evaluate these mechanisms in real-time during uptake of a two-week physical activity prescription (Phase 2). Using a 2x2 factorial design, we will randomize individuals with Body Mass Index (BMI) ≥25, high and low internalized weight bias, and insufficient activity (<60 min of moderate physical activity/week) to receive a 90-minute acceptance-based intervention workshop versus a multi-health behavior education condition prior to completing a 30-minute session of supervised, moderate intensity treadmill walking. Heart rate, self-reported perceived exertion and affect will be assessed throughout physical activity.

For Phase 2, all participants from Phase 1 will receive a two-week physical activity prescription consistent with National Guidelines (150 minutes moderate intensity aerobic physical activity, recommended in 30-minute bouts) to determine the effect of treatment condition on subsequent adherence to physical activity. Physical activity adherence will be monitored with Actigraphy and Ecological Momentary Assessment (repeated daily surveys via smartphone) will be used to evaluate participant self-efficacy, intention, motivation for physical activity in near real-time.

Enrollment: 56 estimated patients

Sex: All

Ages: 18 to 60 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• 18-60 years old,
• BMI 25-40 kg/m2
• insufficiently active (<60 minutes of moderate intensity activity per week).
• High/low internalized weight bias
• Access to personal smartphone device and willing to download free smartphone app for data collection

Exclusion criteria

• Comorbid issues that might interfere with ability to engage in physical activity
• Factors that would influence ability to complete study protocol (e.g., cognitive, psychological)
• medication that would affect heart rate (e.g., beta blocker),
• women who are nursing or pregnant

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: Single Blind

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56 participants in 2 patient groups

Acceptance-based

Experimental group

Description:

This 90-minute one-on-one intervention will provide psychoeducation and experiential training on the use of acceptance-based strategies for physical activity.

Treatment:

Behavioral: Acceptance and Commitment

Multi Health Behavior

Sham Comparator group

Description:

This 90-minute one-on-one intervention will provide psychoeducation on physical activity as one of several interconnected health behaviors.

Treatment:

Behavioral: Multi-Health Behavior