The purpose of this study is to assess how time restricted eating interventions impact eating behaviors, diet quality, and body composition in women ages 20-29 years. Participants will be asked to limit all food and drinks (except water and some non-caloric beverages) to a 10-hour period during the day for four weeks. Participants 1-36 will follow their usual eating and activity patterns for one week before starting, and follow whatever eating pattern they want for 4 weeks after finishing. Participants 37-51 will follow their usual eating and activity patterns for one week before starting, and will not complete a follow up period.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
51
Limit food intake to 10 hours per day as described in the experimental arm section.
University of Delaware
Newark, Delaware, United States
Emotional Eating
Dutch Eating Behavior Questionnaire: Emotional Eating Subscale. This subscale is scored from 1-5, with higher scores indicating higher emotional eating.
Time frame: Participants 1-36: 3 time points: baseline, end of 4-week intervention, end of 4-week follow up Participants 37-51: 2 time points: baseline, end of 4-week intervention
External Eating
Dutch Eating Behavior Questionnaire: External Eating Subscale. This subscale is scored from 1-5, with higher scores indicating higher external eating.
Time frame: Participants 1-36: 3 time points: baseline, end of 4-week intervention, end of 4-week follow up Participants 37-51: 2 time points: baseline, end of 4-week intervention
Eating in the Absence of Hunger
Assessed through surveys sent 5x/day asking about if food was eaten and why.
Time frame: Participants 1-36: Baseline week, weeks 1 and 4 of intervention, weeks 1 and 4 of follow up Participants 37-51: Baseline week, weeks 1 and 4 of intervention
Diet Quality
Healthy Eating Index, calculated from 3-day food records. The Healthy Eating Index is scored from 0-100, with higher scores indicating higher diet quality.
Time frame: Participants 1-36: 3 time points: baseline, end of 4-week intervention, end of 4-week follow up Participants 37-51: 2 time points: baseline, end of 4-week intervention
Body composition (total percent body fat)
Percent body fat measured by DXA
Time frame: Baseline and end of 4-week intervention (participants 1-36 only)
Body composition (visceral fat)
Visceral fat measured by DXA
Time frame: Baseline and end of 4-week intervention (participants 1-36 only)
Body weight
Total body weight
Time frame: Participants 1-36: 3 time points: baseline, end of 4-week intervention, end of 4-week follow up Participants 37-51: 2 time points: baseline, end of 4-week intervention
Continuous Glucose Monitoring
Participants will wear a Dexcom continuous glucose monitor
Time frame: First 10 days of study, last 7 days of intervention period (added for participants 37-51, optional for participants 29-36)
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