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Overweight Impairs Postural Control of Female Night Workers.

Fernanda Veruska Narciso1, Ana R Dâmaso2, Jose A Barela3

  • 1Centro Universitário Mário Palmério (UNIFUCAMP), Physioterapy, Monte Carmelo, MG, Brazil.

Sleep Science (Sao Paulo, Brazil)
|May 8, 2023
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Summary

High body mass index (BMI) negatively impacts postural control in female night workers. This instability is evident before and after their shifts, affecting balance and movement.

Keywords:
circadian rhythmspostural balanceshift work schedule

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Area of Science:

  • Occupational Health
  • Biomechanics
  • Sleep Science

Background:

  • Night work disrupts circadian rhythms and can affect physical performance.
  • Postural control is crucial for preventing falls and injuries, especially in demanding work environments.
  • The influence of body mass index (BMI) on postural stability in night shift workers is not well-established.

Purpose of the Study:

  • To investigate the relationship between sleep duration and postural control in female night workers.
  • To determine the impact of body mass index (BMI) on postural control before and after a 12-hour night shift.
  • To assess changes in postural control following night work.

Main Methods:

  • 14 female night workers underwent evaluation using actigraphy for sleep-wake cycles.
  • Body mass index (BMI) was calculated from measured height and weight.
  • Postural control was assessed using a force platform with eyes open and closed, both pre- and post-shift.

Main Results:

  • Body mass index (BMI) significantly affected postural control, specifically the velocity and center of pressure path, with eyes open and closed.
  • High BMI was associated with increased postural sway in female night workers.
  • Postural control was impaired both before and after the night work shift.

Conclusions:

  • Elevated body mass index (BMI) is a significant factor impairing postural control in female night workers.
  • Night work exacerbates postural instability, particularly in individuals with higher BMI.
  • Findings highlight the need for interventions to mitigate risks associated with poor postural control in this occupational group.