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Related Experiment Videos

Sleep during Ramadan intermittent fasting.

R Roky1, F Chapotot, F Hakkou

  • 1Département de pharmacologie, Faculté de médecine et de pharmacie, Casablanca, Maroc, France.

Journal of Sleep Research
|March 21, 2002
PubMed
Summary
This summary is machine-generated.

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Ramadan intermittent fasting significantly impacts sleep, increasing sleep latency and altering sleep architecture. These changes, including reduced slow-wave and REM sleep, are linked to delayed body temperature rhythms, not altered calorie intake.

Area of Science:

  • Sleep Medicine
  • Chronobiology
  • Nutritional Science

Background:

  • Intermittent fasting during Ramadan involves eating only between sunset and sunrise.
  • This altered eating schedule may disrupt nocturnal sleep patterns and physiological rhythms.

Purpose of the Study:

  • To investigate the effects of Ramadan intermittent fasting on sleep architecture and rectal temperature (Tre) circadian rhythms.
  • To determine if observed changes are due to fasting or altered meal timing.

Main Methods:

  • Eight healthy young males underwent polysomnography and rectal temperature monitoring over four periods: baseline, early Ramadan, late Ramadan, and post-Ramadan.
  • Sleep stages (NREM, SWS, REM) and rectal temperature (Tre) parameters (acrophase, mesor, amplitude) were analyzed.

Related Experiment Videos

Main Results:

  • Ramadan fasting increased sleep latency and decreased total sleep time.
  • Sleep architecture showed altered proportions of NREM sleep, with increased stage 2 and decreased slow-wave sleep (SWS).
  • Rapid eye movement (REM) sleep duration and proportion decreased; rectal temperature showed a delayed acrophase and increased nocturnal values, with decreased amplitude.

Conclusions:

  • Ramadan intermittent fasting significantly modifies sleep architecture, characterized by increased sleep latency and reduced SWS and REM sleep.
  • Changes in sleep are associated with a delayed circadian rhythm of core body temperature.
  • These effects are primarily attributed to the inverted drinking and meal schedule rather than altered energy intake.