Fish Feeding Study (FFS): The impact of fish and fish oil capsule intake on omega-3 fatty acid status, health and cognitive function of Omani school children of 9-10 years old living in Muscat

ISRCTN ISRCTN93233285
DOI https://doi.org/10.1186/ISRCTN93233285
Protocol serial number v1
Sponsor London Metropolitan University (UK)
Funder Ministry of Agriculture and Fisheries Wealth (Oman) (Ref. No. 1/3/43)
Submission date
13/07/2012
Registration date
10/01/2013
Last edited
24/11/2014
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Nutritional, Metabolic, Endocrine
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
There has been a sharp increase in obesity, type 2 diabetes, and cardio-vascular disease in Omani population. Childhood obesity is a strong precursor for adult obesity which in turn is associated with type 2 diabetes and cardio-vascular disease. Moreover, more children are affected by psychiatric disorder such as attention deficit and hyperactivity disorder. Growing evidence suggests that increased consumption of fish and marine products which are the main source of long-chain omega-3 fatty acids have beneficial effect on obesity, cardio-vascular disease and children’s learning and behaviour. In this study, we aim to (a) assess nutritional status (b) investigate the effect of omega-3 fatty acids either by eating more fish or taking omega-3 oil on the lipid profile, body fat, and cognition and behaviour of Omani children.

Who can participate?
Healthy male and female Omani school children of 9-10 years old living in Muscat, Sultanate of Oman.

What does the study involve?
Children will be asked either to eat fish meal or take one capsule of omega-3 fish oil four times a week for 16 weeks. Blood samples obtained before and after the dietary intervention will be assessed for the nutritional status, blood lipid profile, and total blood counts. Similarly, body composition, and cognition and behaviour will be assessed in all children.

What are the possible benefits and risks of participating?
Each participant (children’s parent or guardian) will receive a feedback on their overall nutritional and health status.
There is no risk of participating.

Where is the study run from?
The study has been set up by the Lipidomics and Nutrition Research Centre, Faculty of Life Sciences and Computing, London Metropolitan University in collaboration with the Ministries of Agriculture and Fisheries Wealth, Health, and Education, and Sultan Qaboos University, Sultanate of Oman. The recruitment, intervention and part of the assessment will be carried out in Muscat, Sultanate of Oman, and some of the biochemical analysis will be conducted at London Metropolitan University.

When is the study starting and how long is it expected to run for?
The study started in September 2012 and will last for two years.

Who is funding the study?
The Ministry of Agriculture and Fisheries Wealth, Sultanate of Oman has provided the funding for the study.

Who is the main contact?
Profession Kebreab Ghebremeskel
k.ghebremeskel@londonmet.ac.uk

Dr Yoeju Min
y.min@londonmet.ac.uk

Contact information

Prof Kebreab Ghebremeskel
Scientific

Lipidomics and Nutrition Research Centre
Faculty of Life Sciences and Computing
London Metropolitan University
166-220 Holloway Road
London
N7 8DB
United Kingdom

Study information

Primary study designInterventional
Study designRandomised open-label trial
Secondary study designRandomised controlled trial
Study type Participant information sheet
Scientific titleThe impact of fish and fish oil capsule intake on omega-3 fatty acid status, health and cognitive function of Omani school children of 9-10 years old living in Muscat: a randomised open-label trial
Study acronymFFS
Study objectivesAdditional intake of fish or omega-3 oil capsule does not enhance blood docosahexaenoic acid (DHA) level in healthy Omani school children.
Ethics approval(s)1. Research and Ethical Review and Approve Committee, Ministry of Health, Sultanate of Oman, 19/06/2012, ref: MH/DGP/R%S/PROPOSAL_APPROVED/8/2012
2. NRES Committee North West - Haydock, UK, 11/10/2012, REC Reference - 12/NW/0760
Health condition(s) or problem(s) studiedNutritional status
InterventionFish Meal Group - Fish lunch (100-150g of fish per serving) 4 times a week

Omega-3 Oil Group - One fish oil capsule which contains 200-250 mg long-chain omega-3 fatty acids 4 times a week

Total duration of intervention: 16 weeks
Intervention typeSupplement
Primary outcome measure(s)

Red blood cell docosahexaenoic acid (DHA) level at the end of 16 weeks of dietary intervention

Key secondary outcome measure(s)

1. Body fat %
2. Full blood counts
3. Blood lipid profile
4. Behaviour and cognitive functions

Measured at the end of 16 weeks of dietary intervention

Completion date31/08/2014

Eligibility

Participant type(s)Patient
Age groupChild
Lower age limit9 Years
Upper age limit10 Years
SexAll
Target sample size at registration354
Key inclusion criteriaMale and female children aged 9-10 years who do not have any hereditary or chronic medical condition
Key exclusion criteriaChildren with known hereditary or chronic medical condition which requires medication or suffer from fish or shellfish allergy
Date of first enrolment01/09/2012
Date of final enrolment31/08/2014

Locations

Countries of recruitment

  • United Kingdom
  • England
  • Oman

Study participating centre

Lipidomics and Nutrition Research Centre
London
N7 8DB
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes
Study website Study website 11/11/2025 11/11/2025 No Yes