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Med Sci Sports Exerc. 2019 Mar;51(3):465-471. doi: 10.1249/MSS.0000000000001826.

Longitudinal Associations of Fitness, Motor Competence, and Adiposity with Cognition.

Author information

1
Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, FINLAND.
2
Institute of Biomedicine, School of Medicine, University of Eastern Finland, Kuopio, FINLAND.
3
Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, Kuopio, FINLAND.
4
Social and Health Center, City of Varkaus, FINLAND.
5
Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, DENMARK.
6
Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, Kuopio, FINLAND.
7
Institute of Clinical Medicine, University of Eastern Finland, Kuopio Campus, FINLAND.
8
Foundation for Research in Health Exercise and Nutrition, Kuopio Research Institute of Exercise Medicine, Kuopio, FINLAND.

Abstract

PURPOSE:

The purpose of this study was to investigate the longitudinal associations of cardiorespiratory fitness (CRF), motor competence (MC), and body fat percentage (BF%) with cognition in children.

METHODS:

Altogether, 371 children (188 boys and 183 girls) 6-9 yr of age at baseline participated in this 2-yr follow-up study. We assessed CRF by maximal cycle ergometer test, computed the MC score from the z-scores of the 50-m shuttle run, static balance, and box and block test results, measured BF% by dual-energy x-ray absorptiometry, and assessed cognition using the Raven's Coloured Progressive Matrices (RCPM) score. The associations were studied by linear regression analysis and repeated-measures ANCOVA.

RESULTS:

In boys, a higher MC score (β = -0.161, 95% confidence interval [CI] = -0.314 to -0.009), a shorter 50-m shuttle run test duration (β = 0.152, 95% CI = 0.007-0.296), and a higher number of cubes moved in the Box and block test (β = -0.161, 95% CI = -0.309 to -0.013) at baseline were associated with a smaller increase in the RCPM score during follow-up. These associations were largely explained by the RCPM score at baseline. However, boys in the highest third (mean difference = 2.5, 95% CI for difference = 0.66-4.33) and the middle third (mean difference = 2.1, 95% CI for difference = 0.39-3.82) of the MC score at baseline had a higher RCPM score over the 2-yr follow-up than boys in the lowest third. CRF, MC, or adiposity was not associated with the RCPM score in girls. Changes in CRF, MC, or BF% were not associated with changes in cognition.

CONCLUSIONS:

Higher MC at baseline predicted better cognition during the first two school years in boys but not in girls. CRF or adiposity was not associated with cognition in boys or girls.

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