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

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

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.

Study Overview

• Status: Completed
• Conditions: Shift Work Type Circadian Rhythm Sleep Disorder
• Intervention / Treatment: Other: With Meal during night work; Other: Without Meal during night work; Other: Sleep night

Detailed Description

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.

• Study Type: Interventional
• Enrollment (Actual): 10
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Brazil
  • Minas Gerais
    • Uberlândia, Minas Gerais, Brazil, 38.405-320
      • Cibele Aparecida Crispim

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years to 50 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: Male

Description

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.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Night workers.; Night workers of the military police of Minas Gerais, Uberlândia, who will participate in the three interventions of the study.

Other: With Meal during night work; 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).; Other: Without Meal during night work; 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).; Other: Sleep night; 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).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Preprandial metabolic	Ghrelin, GLP-1 - glucagon-like peptide 1, PYY-peptide YY	6 months
Change of food perceptions	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.	6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Food behavior	Record of food consumption of the meals / snacks held following the test meal.	6 months

Collaborators and Investigators

• Sponsor: Federal University of Uberlandia

Study record dates

Study Major Dates

• Study Start (Actual): January 1, 2019
• Primary Completion (Actual): September 1, 2019
• Study Completion (Actual): July 1, 2020

Study Registration Dates

• First Submitted: January 9, 2019
• First Submitted That Met QC Criteria: January 9, 2019
• First Posted (Actual): January 11, 2019

Study Record Updates

• Last Update Posted (Actual): February 14, 2022
• Last Update Submitted That Met QC Criteria: February 10, 2022
• Last Verified: February 1, 2022

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Nervous System Diseases; Dyssomnias; Neurologic Manifestations; Occupational Diseases; Chronobiology Disorders; Sleep Wake Disorders; Sleep Disorders, Circadian Rhythm
• Other Study ID Numbers: 86382218.6.0000.5152

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No