The goal of this project is to investigate how to enhance the effects of an online-only (mHealth) couples weight loss program. This study will use an innovative methodological framework, the Multiphase Optimization Strategy (MOST), to test four different strategies for weight loss and partner support in addition to a core intervention (i.e., dyadic action planning, joint feedback on goal progress, autonomy support training, and home environment modifications).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
762
Behavioral weight loss core (lessons, self weighing, self-monitoring, individual action planning, feedback and progress check ins)
Participants will develop dyadic action plans together.
Participants will see data on their partner's progress, in addition to their own weight and behavioral data.
UConn's Weight Management Research Group
Hartford, Connecticut, United States
Body Weight (kg)
Weight change from baseline to 6 months. Weight will be objectively measured on a digital scale in the participant's home and weight change will be calculated.
Time frame: Baseline to 6 months
Goal Coordination (Wingrove Goal Coordination Scale)
Goal coordination (the extent to which partners integrate and align their weight management goals) will be measured with the Wingrove Goal Coordination Scale at baseline, 3, and 6 months.
Time frame: Baseline, 3 months, 6 months
Transactive Density
Interdependence of partners will be measured with the Inclusion of Others in the Self Scale at baseline, 3, and 6 months.
Time frame: Baseline, 3 months, 6 months
Shared Goal Representation
The Important Others Questionnaire will be used to capture shared goal representation at baseline, 3, and 6 months.
Time frame: Baseline, 3 months, 6 months
Home Food Environment (Household Food Inventory)
The home food environment will be measured with the Household Food Inventory, administered at baseline, 3, and 6 months.
Time frame: Baseline, 3 months, 6 months
Home Exercise Environment (Exercise Environment Questionnaire)
The home exercise environment will be measured with the Exercise Environment Questionnaire, administered at baseline, 3, and 6 months.
Time frame: Baseline, 3 months, 6 months
Dietary Intake
Dietary intake will be assessed at baseline and 3 months as a hypothesized behavioral mediator and at 6 months as a secondary outcome measure.
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Participants will receive training in how to create an autonomy supportive environment within their marriage/partnership.
Participants will be trained in how to structure their home environment to support health behavior.
Time frame: Baseline, 3 months, 6 months
Physical Activity (Paffenbarger Physical Activity Questionnaire)
Physical activity will be assessed using the Paffenbarger Physical Activity Questionnaire at baseline and 3 months as a hypothesized behavioral mediator and at 6 months as a secondary outcome measure.
Time frame: Baseline, 3 months, 6 months