hkr.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Publications (4 of 4) Show all publications
Rosander, U., Rumpunen, K., Olsson, V., Åström, M., Rosander, P. & Wendin, K. (2017). Methodological considerations in a pilot study on the effects of a berry enriched smoothie on children’s performance in school. Food & Nutrition Research, 61(1)
Open this publication in new window or tab >>Methodological considerations in a pilot study on the effects of a berry enriched smoothie on children’s performance in school
Show others...
2017 (English)In: Food & Nutrition Research, Vol. 61, no 1Article in journal (Refereed) Published
Abstract [en]

Berries contain bioactive compounds that may affect children’s cognitive function positively, while hunger and thirst during lessons before lunch affect academic performance negatively. This pilot study addresses methodological challenges in studying if a berry smoothie, offered to schoolchildren as a mid-morning beverage, affects academic performance.

The objective was to investigate if a cross-over design can be used to study these effects in a school setting.

Therefore, in order to investigate assay sensitivity, 236 Swedish children aged 10–12 years were administered either a berry smoothie (active) or a fruit-based control beverage after their mid-morning break. Both beverages provided 5% of child daily energy intake. In total, 91% of participants completed the study. Academic performance was assessed using the d2 test of attention. Statistical analyses were performed using the Wilcoxon signed rank test in StatXact v 10.3.

The results showed that the children consumed less of the active berry smoothie than the control (154 g vs. 246 g). Both beverages increased attention span and concentration significantly (p = 0.000). However, as there was no significant difference (p = 0.938) in the magnitude of this effect between the active and control beverages, the assay sensitivity of the study design was not proven. The effect of the beverages on academic performance was attributed the supplementation of water and energy.

Despite careful design, the active smoothie was less accepted than the control. This could be explained by un-familiar sensory characteristics and peer influence, stressing the importance of sensory similarity and challenges to perform a study in school settings. The employed cross-over design did not reveal any effects of bioactive compound consumption on academic performance. In future studies, the experimental set up should be modified or replaced by e.g. the parallel study design, in order to provide conclusive results.

Place, publisher, year, edition, pages
Taylor & Francis, 2017
Keywords
Berries, beverage, concentration, d2 test of attention, fruits, total error percentage, vegetables
National Category
Natural Sciences
Identifiers
urn:nbn:se:hkr:diva-17702 (URN)10.1080/16546628.2017.1409063 (DOI)000416865600001 ()29230155 (PubMedID)
Available from: 2017-12-14 Created: 2017-12-14 Last updated: 2017-12-18Bibliographically approved
Rosander, U., Rumpunen, K., Olsson, V., Sepp, H., Rosander, P. & Wendin, K. (2015). Could a smoothie, rich in nutrients and bioactive substances, improve school performance?. Paper presented at 12th European Nutrition Conference(FENS), Berlin, Germany, October 20–23, 2015. Annals of Nutrition and Metabolism, 67(Suppl. 1), 212, Article ID 149/1319.
Open this publication in new window or tab >>Could a smoothie, rich in nutrients and bioactive substances, improve school performance?
Show others...
2015 (English)In: Annals of Nutrition and Metabolism, ISSN 0250-6807, E-ISSN 1421-9697, Vol. 67, no Suppl. 1, p. 212-, article id 149/1319Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

Introduction: Fruits and vegetables contain vitamins, minerals and other bioactive substances, which are important for intellectual performance. In a previous study it was shown that approximately two third of the pupils were hungry the last lesson before lunch. The average fruit and vegetable intake at lunch was much lower than the recommendations.

Objectives: The purpose of this pilot study was to investigate effect on attention and school performance of a vegetable smoothie, rich in berries, fruits and vegetables, served at the mid-morning brake.

Method / Design: In total 250 Swedish children aged 10-12 years participated. The study was designed as a cross-over trial with two study periods of ten schooldays. The children were randomly divided into two groups and were administered either an active smoothie (smoothie 1; group A) or a fruit-based placebo with the same energy content (smoothie 2; group B). Both smoothies were designed to provide 5% of the daily energy. After a three week wash-out period, group A was administered smoothie 2 and group B, smoothie 1. Statistical tests were performed using SPSS package, version 22.0, using Independent-Samples T test. Analysis included processing speed (PTO), concentration performance (CP) and percentages of error (Ep) as assessed by the D2-test

Results: Preliminary analyses indicate that PTO and CP increased during the intervention period, whilst Ep decreased, for both groups. The effect was stronger in the group drinking the active smoothie, than in the group drinking the placebo. The effect might partly be caused by the addition of water and energy

Conclusions: Attention, and thereby also school performance, may be improved by mid-morning consumption of a smoothie containing water, energy and preferably nutrients and other bioactive substances.

Keywords
School performance, fruit and berries
National Category
Natural Sciences
Identifiers
urn:nbn:se:hkr:diva-14902 (URN)10.1159/000440895 (DOI)000374988801034 ()
Conference
12th European Nutrition Conference(FENS), Berlin, Germany, October 20–23, 2015
Projects
Skolskjutsen
Note

Projektet "Skolskjutsen – Skånsk smart smoothie för skolbarn" har finansierats av Länsstyrelsen i Skåne inom den Skånska Dryckesstrategin 2013–2020 via Europeiska jordbruksfonden för landsbygdsutveckling.

Available from: 2015-10-02 Created: 2015-10-02 Last updated: 2017-12-01Bibliographically approved
Rosander, U., Rumpunen, K., Olsson, V., Sepp, H., Rosander, P. & Wendin, K. (2015). Food'n fruit - promoting healthier eating at school: could a smoothie, rich in nutrients and bioactive substances, improve school performance?. In: : . Paper presented at ISBNPA 2015 annual meeting, Edinburgh, Scotland, June 3-6, 2015.
Open this publication in new window or tab >>Food'n fruit - promoting healthier eating at school: could a smoothie, rich in nutrients and bioactive substances, improve school performance?
Show others...
2015 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Effect on attention of a vegetable smoothie, rich in berries, fruits

and vegetables, served at the school mid-morning brake. Viktoria

Ohlsson. Kristianstad University

Purpose:

The purpose of this pilot study was to investigate effect on

attention of a vegetable smoothie, rich in berries, fruits and

vegetables, served at the mid-morning brake. The smoothie was

designed to provide only 5% of the daily energy. The effect was

assessed by the D2-test of attention.

Participants and setting:

Pupils, aged 10 to 12 years, from twelve school classes in southern

Sweden, were invited to participate in the study. In total 250

children participated. Children suffering from serious food allergies

or food intolerance were excluded from the study.

Data collection:

The study was designed as a cross-over trial with two study

periods of ten schooldays. The children were randomly divided

into two groups and were administered either an active smoothie

(smoothie 1; group A) or a fruit-based placebo with the same

energy content (smoothie 2; group B). After a three week washout

period, group A was administered smoothie 2 and group B,

smoothie 1.

Prior to the study, all children answered a questionnaire about their

consumption of fruit, berries and vegetables, physical activity habit

and and their perceived hunger during the school day. Age, height

and weight was also recorded.

Data analysis:

Analysis of the data focused on concentration performance as

assessed by the D2-test.

National Category
Natural Sciences
Identifiers
urn:nbn:se:hkr:diva-14007 (URN)
Conference
ISBNPA 2015 annual meeting, Edinburgh, Scotland, June 3-6, 2015
Projects
Skolskjutsen
Note

Projektet "Skolskjutsen – Skånsk smart smoothie för skolbarn" har finansierats av Länsstyrelsen i Skåne inom den Skånska Dryckesstrategin 2013–2020 via Europeiska jordbruksfonden för landsbygdsutveckling.

Available from: 2015-10-02 Created: 2015-06-08 Last updated: 2015-12-22Bibliographically approved
Rumpunen, K., Rosander, U., Olsson, V., Sepp, H., Annika, N., Olsson, T. & Rosander, P. (2015). Smoothie kan förbättra uppmärksamheten hos skolbarn!.
Open this publication in new window or tab >>Smoothie kan förbättra uppmärksamheten hos skolbarn!
Show others...
2015 (Swedish)Report (Other (popular science, discussion, etc.))
Publisher
p. 4
Series
LTV-fakultetens faktablad. Fakta från Institutionen för växtförädling – Balsgård ; 2015:13
Keywords
Frukt, bär, dryck, grönsaker, kognition, smoothie, skolbarn
National Category
Natural Sciences
Identifiers
urn:nbn:se:hkr:diva-14903 (URN)
Projects
Skolsjutsen
Note

Projektet "Skolskjutsen – Skånsk smart smoothie för skolbarn" har finansierats av Länsstyrelsen i Skåne inom deSkånska Dryckesstrategin 2013–2020 via Europeiska jordbruksfonden för landsbygdsutveckling.

Available from: 2015-10-02 Created: 2015-10-02 Last updated: 2016-01-20Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-3229-5010

Search in DiVA

Show all publications