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Eating Duration throughout a Rotating Shift Schedule: A Case Study.

Luisa Pereira Marot1, Dayane Eusenia Rosa1, Tássia do Vale Cardoso Lopes1

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Journal of the American College of Nutrition
|September 24, 2020
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Summary
This summary is machine-generated.

Shift work significantly impacts eating duration (ED) and energy intake in male workers. Longer wakefulness periods during shifts correlate with higher energy consumption, while macronutrient balance remains consistent.

Keywords:
Food intakeeating durationnutritionrotation shift scheduleshift workers

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Area of Science:

  • Occupational Health
  • Nutritional Science
  • Chronobiology

Background:

  • Shift work rotation is prevalent, yet its effects on food consumption patterns are under-researched.
  • Understanding eating duration (ED) and its link to nutrient intake is crucial for shift worker well-being.

Purpose of the Study:

  • To characterize eating duration (ED) over a 10-day clockwise shift rotation.
  • To associate ED with energy and macronutrient intake in male shift workers.

Main Methods:

  • Thirty male shift workers' 10-day rotation schedule (morning, afternoon, night shifts, and free days) was monitored.
  • Eating duration (ED) was defined as the time between the first and last meal.
  • Actigraphy and 24-hour recalls assessed sleep/wake patterns and food intake, analyzed using generalized models.

Main Results:

  • Significant variations in ED were observed throughout the shift rotation.
  • Highest energy intake (3410 kcal) and longest ED (20.7 h) occurred during extended wakefulness between afternoon and night shifts.
  • Lowest energy intake (1284 kcal) and shortest ED (4.96 h) were noted after the final night shift.

Conclusions:

  • Extended wakefulness periods during shift work are associated with increased energy intake.
  • Macronutrient balance remained consistent despite variations in ED and energy intake.
  • Managing eating duration could be a key component of nutritional strategies for shift workers.