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dc.contributor.authorSaczynski, Jane S
dc.contributor.authorJonsdottir, Maria K
dc.contributor.authorSigurdsson, Sigurdur
dc.contributor.authorEiriksdottir, Gudny
dc.contributor.authorJonsson, Palmi V
dc.contributor.authorGarcia, Melisa E
dc.contributor.authorKjartansson, Olafur
dc.contributor.authorvan Buchem, Mark A
dc.contributor.authorGudnason, Vlimundur
dc.contributor.authorLauner, Lenore J
dc.date.accessioned2011-02-01T13:19:13Z
dc.date.available2011-02-01T13:19:13Z
dc.date.issued2008-08
dc.date.submitted2011-02-01
dc.identifier.citationJ. Gerontol. A Biol. Sci. Med. Sci. 2008, 63(8):848-54en
dc.identifier.issn1079-5006
dc.identifier.pmid18772473
dc.identifier.urihttp://hdl.handle.net/2336/120825
dc.descriptionTo access publisher full text version of this article. Please click on the hyperlink in Additional Links fielden
dc.description.abstractBACKGROUND: Among persons with white matter lesions (WMLs), there is a range of cognitive function. We examine whether participation in leisure activities modifies the effect of WML load on cognitive function. METHODS: Data are from 2300 men and women (aged 66-92 years) participating in the population-based Age Gene/Environment Susceptibility-Reykjavik Study. Subcortical WML load was calculated as a weighted sum, based on size of lesions in the four lobes. Periventricular WML load was calculated as the sum of lesion scores, based on size, for the frontal caps, occipitoparietal caps and bands. The upper quartile of lesion load in either area was compared to the lower three quartiles. Composite scores of memory (MEM), speed of processing (SP), and executive function (EF) were constructed from a battery of neuropsychological tests. Frequency of participation in nine cognitively stimulating leisure activities was assessed via questionnaire; the upper quartile was compared to the lower three quartiles. Multiple regression, controlling for demographic and health factors and brain infarcts, was used to test the main effects and interaction of WMLs and leisure activity on cognitive function. RESULTS: High leisure activity was associated with higher performance in all three cognitive abilities: MEM beta = 0.20, 95% confidence interval [CI], 0.11-0.29; SP beta = 0.37, 95% CI, 0.29-0.45; and EF beta = 0.23, 95% CI, 0.15-0.29. High WML load was associated with significantly lower performance in SP (beta = -0.06, 95% CI, -0.13 to -0.01). The effect of WMLs on SP performance was modified by high leisure activity (p for interaction <.05). CONCLUSION: Participation in cognitively stimulating leisure activity may attenuate the effect of WML pathology on cognitive performance.
dc.language.isoenen
dc.publisherOxford University Pressen
dc.relation.urlhttp://proquest.umi.com/pqdweb?did=1559586321&sid=2&Fmt=4&clientId=131689&RQT=309&VName=PQDen
dc.subject.meshAgeden
dc.subject.meshAged, 80 and overen
dc.subject.meshBrainen
dc.subject.meshBrain Diseasesen
dc.subject.meshCerebral Ventriclesen
dc.subject.meshCognition Disordersen
dc.subject.meshFemaleen
dc.subject.meshHumansen
dc.subject.meshLeisure Activitiesen
dc.subject.meshMaleen
dc.subject.meshOrgan Sizeen
dc.subject.meshTask Performance and Analysisen
dc.titleWhite matter lesions and cognitive performance: the role of cognitively complex leisure activityen
dc.typeArticleen
dc.contributor.departmentDivision of Geriatric Medicine, University of Massachusetts Medical School, Biotech Four, 377 Plantation Street, Worcester, MA 01605, USA. jane.saczynski@umassmed.eduen
dc.identifier.journalJournals of gerontology. Series A, Biological sciences and medical sciencesen
html.description.abstractBACKGROUND: Among persons with white matter lesions (WMLs), there is a range of cognitive function. We examine whether participation in leisure activities modifies the effect of WML load on cognitive function. METHODS: Data are from 2300 men and women (aged 66-92 years) participating in the population-based Age Gene/Environment Susceptibility-Reykjavik Study. Subcortical WML load was calculated as a weighted sum, based on size of lesions in the four lobes. Periventricular WML load was calculated as the sum of lesion scores, based on size, for the frontal caps, occipitoparietal caps and bands. The upper quartile of lesion load in either area was compared to the lower three quartiles. Composite scores of memory (MEM), speed of processing (SP), and executive function (EF) were constructed from a battery of neuropsychological tests. Frequency of participation in nine cognitively stimulating leisure activities was assessed via questionnaire; the upper quartile was compared to the lower three quartiles. Multiple regression, controlling for demographic and health factors and brain infarcts, was used to test the main effects and interaction of WMLs and leisure activity on cognitive function. RESULTS: High leisure activity was associated with higher performance in all three cognitive abilities: MEM beta = 0.20, 95% confidence interval [CI], 0.11-0.29; SP beta = 0.37, 95% CI, 0.29-0.45; and EF beta = 0.23, 95% CI, 0.15-0.29. High WML load was associated with significantly lower performance in SP (beta = -0.06, 95% CI, -0.13 to -0.01). The effect of WMLs on SP performance was modified by high leisure activity (p for interaction <.05). CONCLUSION: Participation in cognitively stimulating leisure activity may attenuate the effect of WML pathology on cognitive performance.


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