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Completed

NCT Number: NCT03800732

The Influence of Nocturnal Food Intake in Eating Behavior of Night Workers

This study aimed to verify the influence of night work and food intake during the night shift on the eating behavior of fixed night workers the next day.

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Key information

Conditions

Shift Work Type Circadian Rhythm Sleep Disorder

Age range

20 year–50 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Cibele Aparecida Crispim

Uberlândia, Minas Gerais, 38.405-320, Brazil

About this study

Night work causes restriction of sleep time and circadian misalignment and, therefore, have been associated with nutritional and metabolic impairments. The objective of the present study is to verify the influence of night work and food intake in this period on the behavior of the following day. The workers selected by criteria and inclusion and exclusion will be evaluated at the baseline: anthropometric parameters, food consumption and perception, duration of food consumption, sleep habits and chronobiological pattern (sleep monitoring by actigraphy, chronotype, social jet lag), parameters biochemical (blood count, lipidogram, C-reactive protein, cortisol, glucose, insulin).Subsequently, 30 workers will integrate a randomized and controlled crossover clinical study with three randomly established interventions: (1) two nights of work without meals during the shift; (2) two nights of work with a meal during the shift; (3) two nights sleep. Participants will go to the laboratory the morning after the second night of each condition to offer a test meal ad libitum, which will consist of foods of various compositions and food groups. Preprandial metabolic assessments will be conducted (ghrelin, GLP-1 - glucagon-like peptide 1, PYY-peptide YY). The following postprandial evaluations will be carried out and in the 24 hours following the experiment: food choices (record of all foods) and food perceptions (hunger, appetite, satiety and eating). It is expected to determine how nocturnal versus nocturnal work, and nocturnal fasting versus nocturnal fasting affect the next day's food choices.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Agree to participate in the study and sign the Informed Consent Form (EHIC).
  • No significant changes in body mass in the last 6 months.
  • With stable food and sleep routine in the last two months.

Exclusion criteria

  • Failure to provide the information or material necessary for the development of the study.
  • Report of chronic non-communicable diseases.
  • Report of diagnosed and untreated psychiatric disorders.

Treatment and study plan

With Meal during night work

Other

Two nights of work with a meal during the shift and after will go to the laboratory the morning for eating a test meal ad libitum, which will consist of foods of various compositions and food groups. Preprandial metabolic assessments will be conducted (ghrelin, GLP-1 - glucagon-like peptide 1, PYY-peptide YY). The following postprandial evaluations will be carried out and in the 24 hours following the experiment: food choices (record of all foods) and food perceptions (hunger, appetite, satiety and eating).

Without Meal during night work

Other

Two nights of work without a meal during the shift and after will go to the laboratory the morning for eating a test meal ad libitum, which will consist of foods of various compositions and food groups. Preprandial metabolic assessments will be conducted (ghrelin, GLP-1 - glucagon-like peptide 1, PYY-peptide YY). The following postprandial evaluations will be carried out and in the 24 hours following the experiment: food choices (record of all foods) and food perceptions (hunger, appetite, satiety and eating).

Sleep night

Other

Two sleep nights and after will go to the laboratory the morning for eating a test meal ad libitum, which will consist of foods of various compositions and food groups. Preprandial metabolic assessments will be conducted (ghrelin, GLP-1 - glucagon-like peptide 1, PYY-peptide YY). The following postprandial evaluations will be carried out and in the 24 hours following the experiment: food choices (record of all foods) and food perceptions (hunger, appetite, satiety and eating).

Primary outcomes

  1. Preprandial metabolic

    Time frame: 6 months

    Ghrelin, GLP-1 - glucagon-like peptide 1, PYY-peptide YY

  2. Change of food perceptions

    Time frame: 6 months

    To evaluate appetite, satiety and postprandial satisfaction, a visual analogue scale was applied before and after consumption of the proposed meal, with the questions, "How much hunger did you have before the meal?"; "After the meal, how did you feel?"; "How much did you like the meal?", Signaling all responses on a 0 to 10 cm scale.

Secondary outcomes

  1. Food behavior

    Time frame: 6 months

    Record of food consumption of the meals / snacks held following the test meal.

Sponsors and collaborators

Lead sponsor

Federal University of Uberlandia

Other

Registry information

Official study title

The Influence of Nocturnal Food Intake in Eating Behavior of Night Workers: Randomized Cross-over Study.

Important dates

Study start
2019
Primary completion
2019
Study completion
2020
First posted
Jan 11, 2019
Registry last updated
Feb 14, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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