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BMI och kognitiva funktioner hos friska vuxna
Umeå University, Faculty of Social Sciences, Department of Psychology.
Umeå University, Faculty of Social Sciences, Department of Psychology.
2014 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

There is a global increase in overweight and obesity. At the same time, overweight and obesity can affect cognitive abilities unfavourably. However, only a few studies have been conducted to investigate how body massmeasured by BMI affects cognitive abilities in overweight, but otherwise healthy adults. To examine this a cognitive test battery was administered on 40 individuals (with BMI >25) with the intention to measure episodic memory, working­- and short- term memory, executive functions and processing speed. Two groups were then created using a median split procedure based on their BMI. After controlling for age, gender, waist circumference, percentage of body fat, NEAT and blood pressure, multivariate analysis of covariance (MANCOVA) showed significant main effect for BMI indicating that those with a higher BMI performed worse compared to those with lower BMI. Further post-­hoc analysis showed that those with a BMI >28.75 performed significantly worse on specific domains including episodic memory and working-­ and short-­term memory. Thus, a higher BMI seems to have negative relation to cognitive performance independently of several mental, physical and obesity-­related variables.

Abstract [sv]

Övervikt och fetma ökar globalt. Samtidigt kan högre vikt påverka kognitiva förmågor ogynnsamt. Dock har endast ett fåtal studier gjorts för att undersöka hur kroppsmassa mätt med BMI påverkar kognitiva förmågor hos överviktiga, i övrigt friska vuxna. I syfte att undersöka detta administrerades ett kognitivt testbatteri på 40 individer (med BMI >25) med avsikt att mäta episodiskt minne, arbets-­och korttidsminne, exekutiva förmågor, samt snabbhet. Deltagarna kategoriserades i två grupper genom en median split utifrån BMI. Efter att ha kontrollerat för ålder, kön, midjemått, procentuell andel helkroppsfett, NEAT och blodtryck fann vi genomen multivariat kovariansanalys (MANCOVA) en signifikant huvudeffekt för BMI som visade att de med högre BMI presterade sämre än de med lägre BMI. Post-­hoc analyser visade att de med BMI > 28.75 presterade signifikant sämre på episodiskt minne samt arbets-­och korttidsminne. Ett högre BMI verkar således ha en negativ inverkan på kognitiv prestation oberoende av flera psykiska, fysiska och fetmarelaterade variabler.

Place, publisher, year, edition, pages
National Category
Social Sciences Psychology
URN: urn:nbn:se:umu:diva-100046OAI: diva2:789501
Subject / course
Examensarbete i psykologi
Educational program
Study Programme for University Diploma in Psychology
Available from: 2015-02-19 Created: 2015-02-19 Last updated: 2015-04-01Bibliographically approved

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