Health Effect of Canola Oil Consumption in Shift Workers

June 6, 2019 updated by: Agnieszka Kuleta-Koberska, Poznan University of Life Sciences

The Effect of Canola Oil Consumption on the Selected Cardiometabolic Parameters in a Group of Shift Workers

Shift work is associated with a higher risk of the development of cardiometabolic syndrome (CMtS) than in people working only during the day. One of the factors predisposing to the development of the CMtS in shift workers is an inappropriate composition of their diet. It was observed that the shift workers diet is characterized by a higher intake of saturated fatty acids (SFA) and a lower consumption of unsaturated fatty acids. One potential way to reduce the risk of CMtS in this study group seems to be a modification of their everyday diet by excluding the products of animal origin (e.g. butter) with simultaneously including vegetable oils (i.e. canola oil). The aim of the study is to evaluate the effect of replacement in the everyday diet of saturated fats (butter) with unsaturated fats (canola oil-based spread and canola oil added to main meals) in centrally obese shift workers on changes in body weight and body composition parameters as well as on changes in CMtS markers.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The study was designed as a randomized clinical trial to investigate the effects of the dietary intervention with moderate in fat content (~35% energy as fat) for 12 weeks on the improvement of cardiometabolic risk factors in centrally obese shift workers. Forty centrally obese shift workers (waist circumference ≥94 cm) were randomized (1:1) to the experimental group (n = 20) or the control group (n = 20). Eligibility criteria included: aged between 30-60 years, working rotating shifts for at least 5 years and working night shifts minimum five times a month. Excluded criteria was described in the point "Eligibility". Written informed consent was obtained from all of the participants, and the local ethic committee approved the study. The dietary intervention was mainly based on the simple rearrangement of shift workers' diets by replacing food items including SFA (e.g. butter) with those being sources of unsaturated fatty acids (UFA), mainly canola oil (given to the diet as spread or this oil was added separately to main meals)

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Poland
      • Poznań, Poland, 60-624
        • Recruiting
        • Poznan University of Life Science
        • Contact:
        • Contact:
        • Principal Investigator:
          • Agnieszka Kuleta-Koberska, Msc

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

30 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • centrally obese (≥ 94cm) male
  • aged between 30-60 years,
  • working rotating shifts for at least 5 years and working night shifts minimum five times a month,

Exclusion Criteria:

  • diabetes, familial hypercholesterolemia, thyroid and parathyroid diseases, non-specific intestinal diseases, celiac disease, phenylketonuria,
  • taking medication for lowering blood lipids such as statins,
  • weight loss therapy for 3 months before the intervention,
  • allergies and intolerances
  • consuming high-proof alcoholic beverages (>2 portions/week)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Intervention group
Isocaloric diet, based on individual energy requirements calculated from indirect calorimetry and physical activity adjustment Participants will be asked to eat daily ~50g canola oil
Behavioral: Intervention group
Isocaloric diet including ~50g canola oil
Active Comparator: Control group
Standard dietary advice that is used as current best practice in the treatment of lipid disturbances of European Society of Cardiology and European Atherosclerosis Society (ESC/EAS) Guidelines for the management of dyslipidemias)
Behavioral: Control group
ESC/EAS Guidelines for the management of dyslipidemias

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Waist circumference (WC)
Time Frame: Baseline, 4, 8 and 12 week
Changes in WC within groups and between groups
Baseline, 4, 8 and 12 week
HDL-cholesterol (HDL-C)
Time Frame: Baseline, 12 week
Changes in HDL-C within groups and between groups
Baseline, 12 week
LDL-cholesterol (LDL-C)
Time Frame: Baseline, 12 week
Changes in LDL-C within groups and between groups
Baseline, 12 week
Triglycerides (TG)
Time Frame: Baseline, 12 week
Changes in TG within groups and between groups
Baseline, 12 week
Glucose (GLU)
Time Frame: Baseline, 12 week
Changes in GLU within groups and between groups
Baseline, 12 week
Blood pressure (BP)
Time Frame: Baseline, 12 week
Changes in BP within groups and between groups
Baseline, 12 week
Body weight (BW)
Time Frame: Baseline, 4, 8 and 12 week
Changes in BW within groups and between groups
Baseline, 4, 8 and 12 week
Fat mass (FM)
Time Frame: Baseline, 4, 8 and 12 week
Changes in FM within groups and between groups
Baseline, 4, 8 and 12 week

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Insulin (INS)
Time Frame: Baseline, 12 week
Changes in INS within groups and between groups
Baseline, 12 week
High-sensitivity C-reactive Protein (hs-CRP)
Time Frame: Baseline, 12 week
Changes in hs-CRP within groups and between groups
Baseline, 12 week
Cardiotrophin-1 (CT-1)
Time Frame: Baseline, 12 week
Changes in CT-1 within groups and between groups
Baseline, 12 week
Lipase (LPS)
Time Frame: Baseline, 12 week
Changes in LPS within groups and between groups
Baseline, 12 week
Cholinesterase (CHE)
Time Frame: Baseline, 12 week
Changes in CHE within groups and between groups respectively
Baseline, 12 week
Alanine transaminase (ALT)
Time Frame: Baseline, 12 week
Changes in ALT within groups and between groups
Baseline, 12 week
Aspartate transaminase (AST)
Time Frame: Baseline, 12 week
Changes in AST within groups and between groups
Baseline, 12 week
Gamma-glutamyltransferase (GGTP)
Time Frame: Baseline, 12 week
Changes in GGTP within groups and between groups
Baseline, 12 week
Melatonin (MEL)
Time Frame: Baseline, 12 week
Changes in MEL within groups and between groups
Baseline, 12 week
Fatty acids (FA) erythrocyte membranes concentration
Time Frame: Baseline, 12 week
Changes in FA within groups and between groups
Baseline, 12 week
Dietary intake
Time Frame: Baseline, 4, 8, 12 week
Changes in dietary intake within groups and between groups
Baseline, 4, 8, 12 week

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Poznan University of Life Sciences

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Agnieszka Kuleta-Koberska, Msc, Poznan University of Life Sciences

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 30, 2018

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 30, 2019

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2019

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 5, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 5, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 6, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 10, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 6, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IoHNaD

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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