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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

SELF-REPORTED SUBJECTIVE HEALTH IN RELATION TO EPISODIC MEMORY PERFORMANCE IN AGING

Nordström, Anna, Teglund, Isabelle January 2022 (has links)
Episodic memory (EM) displays the most prominent age-related decline. However, this decline could possibly be minimized by engaging in a physically active and cognitively stimulating lifestyle. A way to measure the self-perceived ability to engage in such a lifestyle is with subjective health estimations, which have been associated with objective health. The Subjective Health Horizon Questionnaire (SHH-Q) measures estimated individual maximum age to engage in activities in relation to four lifestyle dimensions: Novelty, Body, Work and Life Goals. Among these, Novelty is suggested to be associated with EM performance. Thus, in this study, the first aim is to corroborate that the SHH-Q items align according to the hypothesized dimensions. The second aim is to assess whether any of the dimensions are associated with EM. In this cross-sectional study 129 Swedish participants, aged 69-73, were evaluated with the SHH-Q and three EM tests. Statistical analyses included Principal Component Analysis (PCA) for aim 1 along with a correlation- and linear regression analysis for aim 2. The results showed that the SHH-Q items aligned with the four dimensions as expected, but that the linear regression model with the SHH-Q in relation to EM was not significant. However, a significant positive zero-order correlation between Novelty and EM (r(90) = .19, p = .04) was found. The association between Novelty and EM highlights the possibility that engaging in novelty-oriented exploration, such as new experiences and environments, may be associated with preserved EM performance at older ages. Future research should investigate the neural correlates of this association. / Episodminnet har visat en stark åldersrelaterad försämring. Denna nedgång skulle möjligen kunna minimeras med en fysiskt aktiv och kognitivt stimulerande livsstil. Ett sätt att mäta den självupplevda förmågan att engagera sig i en sådan livsstil är med subjektiva hälsomått, som även har associerats med objektiv hälsa. Subjective Health Horizon Questionnaire (SHH-Q) mäter uppskattad individuell maxålder för engagemang i aktiviteter i relation till fyra dimensioner av livsstil: Novelty, Body, Work och Life Goals. Bland dessa föreslås Novelty vara associerad med episodminnesprestation. Det första målet med denna studie är att korroborera att frågorna i SHH-Q kan delas in i de tidigare föreslagna dimensionerna. Det andra målet är att bedöma om någon av dimensionerna är förknippade med episodminnet. I denna tvärsnittsstudie utvärderades 129 svenska deltagare i åldern 69-73, med SHH-Q och tre EM-tester. Statistiska analyser inkluderar principiell komponentanalys för mål 1 tillsammans med en korrelations- och linjär regressionsanalys för mål 2. Resultatet visade att SHH-Q frågorna kan delas in i de fyra dimensionerna som förväntat, men den linjära regressionsmodellen med SHH-Q i relation till episodminne var inte signifikant. Däremot fanns en signifikant positiv korrelation mellan Novelty och episodminne (r(90) = .19, p = .04). Associationen mellan Novelty och episodminne betonar möjligheten att engagemang i novelty-orienterat utforskande, såsom nya erfarenheter och miljöer, kan vara associerat med bevarad episodminnesprestation vid högre ålder. Framtida forskning bör utforska de neurala korrelaten av denna association.

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