Improving the Experience of Exercise Among Individuals With Internalized Weight Bias Using Acceptance-based Strategies
- Conditions
- Overweight and Obesity
- Interventions
- Behavioral: Multi-Health BehaviorBehavioral: Acceptance and Commitment
- Registration Number
- NCT05119504
- Lead Sponsor
- The Miriam Hospital
- Brief Summary
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.
- Detailed 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.
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 56
- 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
- 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
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- FACTORIAL
- Arm && Interventions
Group Intervention Description Multi Health Behavior Multi-Health Behavior This 90-minute one-on-one intervention will provide psychoeducation on physical activity as one of several interconnected health behaviors. Acceptance-based Acceptance and Commitment This 90-minute one-on-one intervention will provide psychoeducation and experiential training on the use of acceptance-based strategies for physical activity.
- Primary Outcome Measures
Name Time Method Change in perceived exertion Every five minutes during 30-minute treadmill session Assessed using the Borg Ratings of Perceived Exertion-Participants are prompted verbally to rate their exertion on a scale ranging from 6 (no exertion at all) to 20 (maximum exertion) every 5 minutes.
Change in affect Every five minutes during 30-minute treadmill session Assessed using the Feeling Scale --This single-item measure assesses how participants feel 'at the present moment' on an 11-point scale ranging from -5 (very bad) to +5 (very good)), administered every 5 minutes during PA
- Secondary Outcome Measures
Name Time Method Physical Activity Adherence Daily for 14 days For two weeks following the intervention condition, physical activity will be objectively measured using the ActiGraph GT9X Link. This device, worn on the non-dominant wrist, has been previously validated to assess movement and associated energy expenditure. Minute-by-minute data will be analyzed to determine the amount of time spent in bout-related moderate intensity PA (≥ 3 METs, ≥10 min), metrics to increase the likelihood of capturing 'purposeful' PA
Exercise self-efficacy, intention, motivation Four times per day for 14 days Using the Lifedata platform which includes the RealLife EXP application that can be downloaded onto participants' smartphones, participants will be prompted via vibration and audible tone to complete EMA surveys on self-efficacy, intention, and motivation for PA. Items are adapted from validated measures used in the physical activity literature. Participants will be prompted to complete a survey semi-randomly near four anchor times throughout the day, with 90 minutes to respond.
Trial Locations
- Locations (1)
Weight Control and Diabetes Research Center
🇺🇸Providence, Rhode Island, United States