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Related Concept Videos

Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

139
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
139

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Is sleep affected after microgravity and hypergravity exposure? A pilot study.

Barbara Le Roy1,2, Aurore Jouvencel3, Anika Friedl-Werner4,5

  • 1Stress Neurophysiology Unit, French Armed Forces Biomedical Research Institute, Brétigny-sur-Orge Cedex, CNES, Paris, France.

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Short gravity changes during parabolic flights increased sleep fragmentation and awakenings, contrary to self-reports. Pre-existing sleep issues influenced these effects, impacting astronauts and vestibular challenges.

Keywords:
actigraphymicrogravitysleep quality

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Area of Science:

  • Space Medicine
  • Human Physiology
  • Sleep Science

Background:

  • Space travel and microgravity are known to disrupt sleep patterns.
  • Direct effects of gravity changes on sleep, independent of other factors, remain under-explored.

Purpose of the Study:

  • To investigate the direct impact of short-duration microgravity and hypergravity exposure on sleep.
  • To compare objective sleep measures with subjective reports following parabolic flights.

Main Methods:

  • Actigraphy and self-report questionnaires were used to measure sleep in 20 healthy participants.
  • Sleep patterns were analyzed before and after exposure to parabolic flight-induced gravity changes.

Main Results:

  • Participants exhibited increased sleep fragmentation and more awakenings the night after parabolic flights compared to the night before.
  • Subjective reports indicated better and longer sleep post-flight, contrasting with objective findings.
  • Pre-existing sleep problems showed a quadratic relationship with sleep fragmentation and awakenings.

Conclusions:

  • Short-term alterations in gravity significantly impact objective sleep quality, increasing fragmentation and awakenings.
  • Discrepancies between objective and subjective sleep assessments highlight the complexity of altered gravity's effects.
  • Findings have implications for managing sleep disturbances in spaceflight and other vestibular challenges.