Abstract
Background
The research aim was to study the associations of nature diversity with quality of life (QoL) and depressive symptoms among older people, and whether physical activity explains the associations.
Methods
Community-dwelling people aged 75–90 years (n = 848) living in Central Finland were interviewed in their homes. QoL was assessed with a short version of the World Health Organization Quality-of-Life Assessment (range 0–130, higher score indicates better QoL) and depressive symptoms with the Centre for Epidemiologic Studies Depression Scale (range 0–30, higher scores indicate more depressive symptoms). Self-reported physical activity was assessed by intensity and duration using a single question with seven response options ranging from mostly resting to competitive sports. Nature diversity (Shannon Diversity Index) was assessed objectively within a 500-m buffer around participants’ homes using a geographic information system (GIS).
Results
Mean QoL was 100.3 (SD 11.8) and mean CES-D 9.6 (SD 6.8). Those in the highest nature diversity tertile had better QoL than those in the lowest tertile (p = .022). Physical activity did not explain the association between nature diversity and QoL. Adjustment for health indicators did not change the results. Nature diversity was not associated with depressive symptoms.
Conclusion
A diverse environment, especially when this includes elements of nature, is associated with better QoL. Good quality of the green infrastructure and adding natural elements to residential areas may enhance well-being among community-dwelling older people.
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Funding
This work was supported by the Finnish Ministry of Education and Culture (to MR and EP) and Academy of Finland [Grant No. 285747 (to MR)]. The study sponsors had no role in the study design; in the collection, analysis, and interpretation of the data; in the writing of the report; or in the decision to submit the paper for publication.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Participants were informed about the project and they signed a written informed consent prior to the baseline interviews.
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Rantakokko, M., Keskinen, K.E., Kokko, K. et al. Nature diversity and well-being in old age. Aging Clin Exp Res 30, 527–532 (2018). https://doi.org/10.1007/s40520-017-0797-5
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DOI: https://doi.org/10.1007/s40520-017-0797-5