Citation

Poranen-Clark T, von Bonsdorff MB, Rantakokko M, Portegijs E, Eronen J, Pynnönen K, Eriksson JG, Viljanen A, Rantanen T. J. Gerontol. A Biol. Sci. Med. Sci. 2018; 73(6): 835-839.

Affiliation

Gerontology Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland.

Copyright

(Copyright © 2018, Gerontological Society of America)

DOI

10.1093/gerona/glx217

PMID

29099924

Abstract

BACKGROUND: Life-space mobility, an indicator of community mobility, describes person's movements in terms of the distance from home, the frequency of movement and the need of assistance for movement. Executive function (EF) is a higher order cognitive function that supervises motor control, and plays a key role in a person's ability to function independently. Cognitive impairment often co-occurs with restricted life-space mobility, however, the direction of the longitudinal associations between EF and life-space mobility is unclear. The aim of this study was to investigate the temporal associations between EF and life-space mobility among community-dwelling older people.

METHODS: 108 community-dwelling persons aged 76 to 91 years participated in the two-year follow-up study. Executive function was measured with the Trail Making Test (TMT). The Life-Space Assessment (range 0-120, higher scores indicate more mobility) was used to assess life-space mobility. Cross-lagged model design was used to examine longitudinal relationship between EF and life-space mobility. The model was adjusted for age and gender.

RESULTS: Average age of participants at baseline was 82.2 (SD 4.1) years and 59% were women. Better EF at baseline predicted higher life-space mobility at follow-up (path coefficient = 3.81, 95% Confidential Interval; 0.84, 6.78, p = 0.012), while baseline life-space mobility did not predict EF at follow-up.

CONCLUSION: Executive function was a determinant of life-space mobility. Supporting EF may enhance maintaining independence and active participation in old age.

Language: en

Keywords

Cognitive aging; motor control; successful aging