Study Design
A cluster randomised, interventional placebo-controlled trial with a 2×2 factorial design.
A cluster randomised, interventional placebo-controlled trial with a 2×2 factorial design.
Overview
Overview
Aims of the study
All variables being assessed:
- Physical activity
- Physical fitness
- Micronutrient status
- Body composition
- Nutritional habits
- Infections with soil-transmitted helminths
- Infections with schistosoma mansoni
- Infections with malaria
- Cardiovascular health risk markers
- Academic and cognitive performafnce
- Health-related quality of life
- Sleep
Aims of the study
All variables being assessed:
- Physical activity
- Physical fitness
- Micronutrient status
- Body composition
- Nutritional habits
- Infections with soil-transmitted helminths
- Infections with schistosoma mansoni
- Infections with malaria
- Cardiovascular health risk markers
- Academic and cognitive performafnce
- Health-related quality of life
- Sleep
Subjects
The study takes place in Côte d’Ivoire, South Africa and Tanzania.

1’300 children from each country are part of the study (and only if their parents have given informed consent).
At baseline all children are aged 6 to 12 years and currently enrolled at a public primary school.
Data assessment
We collect data over a span of 2 schoolyears. Each child is measured three times.
Intervention
Participants are randomly assigned to one of four intervention groups.
Depending on the intervention group, the children receive one or both of the following intervention:
Physical activity (PA): Children receive 1 physical education and 1 moving-to-music lesson per weeek (duration of each lesson: 45min). These lessons are based on the KaziKidz toolkit and are freely available online.
Physical education lesson based on KaziKidz: Grade 3, spatial orientation
Multi-micronutrient supplementation (MMNS): A specially designed chewing tablet, containing a selection of micronutrients.
Nutrient | Average per 1 tablet |
---|---|
ß-Carotene (as BetaTab 20%S) |
3.6 mg |
Vitamin D | 400 IU / 10 mcg |
Vitamin E | 9 mg TE |
Vitamin K | 30 mcg |
Vitamin C | 60 mg |
Vitamin B1 | 1.1 mg |
Vitamin B2 | 1.3 mg |
Vitamin B6 | 0.5 mg |
Vitamin B12 | 1.2 mcg |
Folic Acid | 200 mcg |
Niacinamide | 8 mg |
Iron (added as Fe-EDTA) | 10 mg |
Zinc (added as zinc oxide) | 5 mg |
Selenium (added as sodium selenite anhydrous) | 20 mcg |
Iodine (added as potassium iodate) | 100 mcg |
Additionally, all participants of the study receive:
- Health and nutrition lessons
- Depending on infection status: Deworming
- Depending on health status: Clinical referral and follow-up
For more details, see our study protocol: