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dc.contributor.authorTsuji, Taishien_US
dc.contributor.authorSasaki, Yurien_US
dc.contributor.authorMatsuyama, Yusukeen_US
dc.contributor.authorSato, Yukihiroen_US
dc.contributor.authorAida, Junen_US
dc.contributor.authorKondo, Katsunorien_US
dc.contributor.authorKawachi, Ichiroen_US
dc.date.accessioned2017-04-06T03:19:58Z
dc.date.issued2017en_US
dc.identifier.citationTsuji, Taishi, Yuri Sasaki, Yusuke Matsuyama, Yukihiro Sato, Jun Aida, Katsunori Kondo, and Ichiro Kawachi. 2017. “Reducing depressive symptoms after the Great East Japan Earthquake in older survivors through group exercise participation and regular walking: a prospective observational study.” BMJ Open 7 (3): e013706. doi:10.1136/bmjopen-2016-013706. http://dx.doi.org/10.1136/bmjopen-2016-013706.en
dc.identifier.issnen
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:32072127
dc.description.abstractObjectives: Survivors of the 2011 Great East Japan Earthquake have an increased risk of depressive symptoms. We sought to examine whether participation in group exercise and regular walking could mitigate the worsening of depressive symptoms among older survivors. Design: Prospective observational study. Setting: Our baseline survey was conducted in August 2010, ∼7 months prior to the Great East Japan Earthquake and tsunami, among people aged 65 or older residing in Iwanuma City, Japan, which suffered significant damage in the disaster. A 3-year follow-up survey was conducted in 2013. Participants: 3567 older survivors responded to the questionnaires predisaster and postdisaster. Primary outcome measures Change in depressive symptoms was assessed using the 15-item Geriatric Depression Scale (GDS). Results: From predisaster to postdisaster, the mean change in GDS score increased by 0.1 point (95% CI −0.003 to 0.207). During the same interval, the frequency of group exercise participation and daily walking time also increased by 1.9 days/year and 1.3 min/day, respectively. After adjusting for all covariates, including personal experiences of disaster, we found that increases in the frequency of group exercise participation (B=−0.139, β=−0.049, p=0.003) and daily walking time (B=−0.087, β=−0.034, p=0.054) were associated with lower GDS scores. Interactions between housing damage and changes in group exercise participation (B=0.103, β=0.034, p=0.063) and changes in walking habit (B=0.095, β=0.033, p=0.070) were marginally significant, meaning that the protective effects tended to be attenuated among survivors reporting more extensive housing damage. Conclusions: Participation in group exercises or regular walking may mitigate the worsening of depressive symptoms among older survivors who have experienced natural disaster.en
dc.language.isoen_USen
dc.publisherBMJ Publishing Groupen
dc.relation.isversionofdoi:10.1136/bmjopen-2016-013706en
dc.relation.hasversionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC5353320/pdf/en
dash.licenseLAAen_US
dc.subjectolder adultsen
dc.subjectnatural disasteren
dc.subjectgeriatric depression scaleen
dc.subjectthe JAGES projecten
dc.subjectmultiple imputationen
dc.titleReducing depressive symptoms after the Great East Japan Earthquake in older survivors through group exercise participation and regular walking: a prospective observational studyen
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden
dc.relation.journalBMJ Openen
dash.depositing.authorKawachi, Ichiroen_US
dc.date.available2017-04-06T03:19:58Z
dc.identifier.doi10.1136/bmjopen-2016-013706*
dash.contributor.affiliatedKawachi, Ichiro


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