Later energy intake relative to mathematically modeled circadian time is associated with higher percentage body fat
Authors' conclusion
Use of mathematically modeled circadian timing resulted in similar relationships between the timing of energy intake and body composition as that observed using in-laboratory collected metrics. These findings may facilitate use of circadian timing in time-based interventions.
Study context
- Population
- Participants wearing a light- and activity-measuring device (actigraph) for 30 days, recording energy intake for 7 consecutive days via a time-stamped-picture phone app
- Participants
- 87 participants
- Exposure
- Overweight/obesity vs lean body fat percentage
- Outcome
- Timing of energy intake (50% of daily calories) relative to mathematically modeled circadian time (model-predicted melatonin onset)
Methodological details30-day ambulatory study, actigraphy, mathematical circadian model
- 30-day ambulatory study
- Actigraphy
- Mathematical circadian model
Main finding
As reported in the abstract
Timing of 50% of daily calories relative to model-predicted melatonin onset
Difference
0.61 hours
log-rank p < 0.05
closer to melatonin onset with Overweight/obesity; model from light and activity data
Difference
0.86 hours
log-rank p < 0.05
closer to melatonin onset with Overweight/obesity; model from activity data alone
Observational data: associations, not effects.
Original publication
Later energy intake relative to mathematically modeled circadian time is associated with higher percentage body fat. Obesity (Silver Spring). Published 29 June 2022. doi:10.
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