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Biological Clocks &
Circadian Rhythms

Time-Restrictive Feeding (TRF) and Biological Clocks

2024Fall - 2025Fall

Research Hypothesis

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Analysis Rationale

  • We broke these 12 people into two experimental groups:

    • Group 1: Feeding was allowed only from 8 am - 6 pm

    • Group 2: Feeding was allowed only from 10 am - 8 pm

  • Before beginning the experiment all participants filled out the Pittsburgh Sleep Quality Index (PSQI)

In a population of college students time-restricted feeding parameters will improve sleep quality and increase duration. When students cease eating at either 6 pm or 8 pm, their bodies will not be actively metabolizing during their sleep, allowing sleep rhythms to normalize.

  • Late night snacking forces your body to metabolize during hours when it would normally not do so

    • This can cause weight gain, in addition to sleep disruption

  • Late night snacking may also interfere with your body’s sleep processes, including Process S and Process C

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Data Analysis

  • Goal: Determine whether feeding windows influenced sleep quality and duration

  • Objective and subjective measures

  • Utilized PRISM to analyze raw data

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Result

Statistically speaking, the sleep duration and qualities of both experimental groups are not significantly different from the control group.

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Discussion

Insulin spike after food ingestion might act as a neuropeptide in the central nervous system and change sleep pattern

TRF---↓insulin signaling---↓sleep amount

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