Eating Behaviour and Quality of Life of Night Workers in Food and Nutrition Units

The clinical trial will be a blind randomized study, in order to contemplate the objectives. This study, which will be fully conducted online, the individuals surveyed (1: 1) will receive, or group intervention, with behavioral cognitive strategies to change eating behavior, or group intervention without the problematization proposed for the change, just working on the transmission of knowledge about healthy lifestyle.The study presents two evaluative moments (before and after the intervention), by filling out questionnaires, which will be used to assess the change in eating behavior. Participants, by their own adherence to the study, will use digital platforms for electronic questionnaires - qualtrics, and for the materials, an interactive electronic mural, padlet (padlet.com). The sample will consist of night workers employees (night and early morning shifts), only women, that work in food and nutrition units. The recruitment of participants will take place from the invitation sent to multiple food and nutrition units, in the southern region of Brazil (states of Paraná, Santa Catarina and Rio Grande do Sul). Workers with less than 3 months working in the unit and on the night shift will be excluded from the sample; as well as interns, under 18 and pregnant women. Poorly completed or incomplete questionnaires will be also excluded from the sample. To obtain a power of 80% and error α = 5%, with an estimated sample loss of 20% in a total of 2 groups, the minimum number for each group is 29 investigated, totaling 58 individuals. For the sample calculation, the program SISA (Simple Interactive Statistical Analysis) was used. A sociodemographic questionnaire; a health diagnosis questionnaire; a self-applicable scale for Food Assessment; the Dutch Eating Behavior Questionnaire (DEBQ) and the WHOQOL- Bref will be used in this research. Employees who accept the invitation to participate in the study will receive a link to answer an online questionnaire, prepared by the Qualtrics platform. This questionnaire will allow to evaluate the inclusion criteria for the research. For those who not gets to participate in the study, will be invited to visit, through the indication of the website and social networks of the research group (@pevspucrs), the educational materials, such as e-books and planners.Those employees to be included will receive a welcome message to the study, and at the same time, read and sign the Informed Consent Form (ICF), which will also be available online. Reaching the required sample size, the groups will be randomized.

Randomization will be per cluster (will be performed according to the workplaces of the employees to be included in the study). This type of randomization strengthens the blinding of research. The locations (food units) will be randomized using the Random Allocation Software, version 2.0 in two groups: Control Group (CG) and Intervention Group (IG).The first task for both groups, before the intervention, will be to complete those questionnaires: sociodemographic questionnaire; anamnesis with anthropometric information; the Self-Applicable Scale for the Assessment of Food, according to the Recommendations of the Food Guide for the Brazilian Population; the Dutch Questionnaire to assess Eating Behavior and the WHOQOL-Bref, to assess quality of life.

As soon as everyone is completely filled in, the intervention process will begin.The online intervention it will be in asynchronous modality way. Members will self-manage activities. Materials for the sessions, such as videos, presentations (canva, mentimeter), infographics and icons, for sending tasks, will be available on an electronic wall (padlet).

The intervention program materials will be available every week, during all the six (06) sessions for each groups. At the end of the intervention, one week after the last session, the participants completed those questionnaires again. And after three months, from the second stage of filling in the instruments, the employees will answer the questionnaires again, in order to verify whether the effect of the intervention has been maintained. Data will be entered in the MS Excel application. The database will be imported into the statistical software Statistical Package for the Social Sciences (SPSS) IBM version 22.

Variables, for the purposes of statistical analysis, will be the following: