Delayed Dinner Intervention
Conditions
Keywords
Eating behaviour, Physical activity, Metabolic health
Brief summary
The aim of this project is to investigate the impact of dinner timing on eating behaviors, physical activity and metabolic healthy in healthy adults
Detailed description
In the early dinner trial, participants will be required to eat dinner between 17:30 and 19:00 for a week. In the delayed dinner trial, participants will be required to eat dinner between 20:30 and 22:00 for a week. During the intervention, energy intake (3 days of weekday and 1 day of weekend), physical activity (7 days), glucose concentrations (7 days) and sleep (7 days) will be monitored continuously for both early and delayed dinner. After intervention, body composition, cognition, food preference, metabolic health and resting metabolic rate will be measured.
Interventions
BEHAVIORALEarly dinner
Consume dinner between 17:30 and 19:00 for a week
BEHAVIORALDelayed dinner
Consume dinner between 20:30 and 22:00 for a week
Sponsors
National Taiwan Normal University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* No regular exerciser in the last 3 months. * BMI between 18.5-27 kg/m². * Regular habit of eating three meals per day, with dinner consumed between 17:00 and 20:00. * No intentional weight change (\>3%) in the past 3 months. * No special dietary practices (e.g., intermittent fasting). * Regular sleep (22:00-01:00), at least 6.5 hours per night. * Non-smoker and non-alcoholic. * Willing to maintain stable lifestyle and comply with protocol.
Exclusion criteria
* Pregnancy, preparing for pregnancy or menopause. * Personal history of/existing diabetes, cardiovascular disease or metabolic diseases. * Diagnosed sleep disorders. * Taking medications influencing glucose metabolism.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Glucose responses | During 7 days of early dinner and 7 days of delayed dinner intervention | Changes in blood glucose responses between early and delayed dinner intervention |
| Eating behaviour | During early dinner and delayed dinner intervention (3 days of weekday and 1 day of weekend) | Meal choice (i.e., energy intake in kcal) between early and delayed dinner intervention |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Sleep duration | During 7 days of early dinner and 7 days of delayed dinner intervention | Changes in sleep duration between early and delayed dinner intervention using MotionWatch |
| Sleep quality | During 7 days of early dinner and 7 days of delayed dinner intervention | Changes in sleep quality (efficiency, %) between early and delayed dinner intervention using MotionWatch |
| Physical activity level | During 7 days of early dinner and 7 days of delayed dinner intervention | Changes in physical activity level (minutes) between early and delayed dinner intervention |
| Physical activity intensity | During 7 days of early dinner and 7 days of delayed dinner intervention | Changes in physical activity intensity (%) between early and delayed dinner intervention using wearable product |
| Cognitive performance | Before and after early and delayed dinner intervention | Changes in computerized cognitive performance (accuracy in %) after early and delayed dinner intervention |
| Food preference tests | Before and after early and delayed dinner intervention | Changes in food preference after early and delayed dinner intervention |
| Resting resting metabolic rate | Before and after early and delayed dinner intervention | Changes in resting metabolic rate (kcal) after early and delayed dinner intervention |
| Body composition | Before and after early and delayed dinner intervention | Changes in body composition (fat mass in kg and percentage) after early and delayed dinner intervention using InBody |
| Blood pressure | Before and after early and delayed dinner intervention | Changes in blood pressure (diastolic and systolic blood pressure in mmHg) after early and delayed dinner intervention |
| Pulse wave velocity | Before and after early and delayed dinner intervention | Changes in pulse wave velocity (meter per second) after early and delayed dinner intervention |
Countries
Taiwan
Contacts
CONTACTYung-Chih Chen
CONTACTChen
PRINCIPAL_INVESTIGATORChen
National Taiwan Normal University
Outcome results
None listed