Intensive Longitudinal Assessment of Stress and Stress-related Concepts Across a Behavioral Weight Loss Intervention

Weight (kg)

Weight will be measured using a digital scale in kg to the nearest 0.1 kg.

Time frame: 0 Weeks, 6 Weeks, 12 Weeks, and 26 Weeks

Physical Activity

Physical activity will be device-measured using an ActiGraph accelerometer. Participants will wear the accelerometer on their wrist for 14 consecutive days. Accelerometer will only be removed for water-based activities.

Time frame: 0 Weeks, 6 Weeks, 12 Weeks, and 26 Weeks

Sleep

Sleep will be device-measured using an ActiGraph accelerometer. Participants will wear the accelerometer on their wrist for 14 consecutive nights.

Time frame: 0 Weeks, 6 Weeks, 12 Weeks, and 26 Weeks

Stress-related Concepts (EMA)

Stress-related concepts are measured by surveys of daily coping ability, stress, and affect assessed by Ecological Momentary Assessments (EMA). For daily coping, participants will be asked about their ability to cope with stress, on a scale from 0-10 with 10 indicating completely able to cope. For stress participants will be asked about their current stress level, on a scale from 0-10 with 10 indicating the highest stress. Affect will be assessed through 5 questions related to their current feeling of happiness, frustration, stress, anger, sadness, and calm/relaxed.

Time frame: 0 Weeks, 6 Weeks, 12 Weeks, and 26 Weeks