Association of sarcopenia, ambient air pollution and cognitive function in a community-dwelling middle-aged and elderly Korean population: a community-based cohort study

ObjectivesTo investigate the association of sarcopenia, exposure to medium-term to long-term ambient particulate matter 2.5 µm and 10 µm (PM2.5 and PM10) pollution and cognitive function in a community-dwelling cohort of middle-aged and older adults in South Korea.DesignA community-based prospective...

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Veröffentlicht in:BMJ open 2024-12, Vol.14 (12), p.e092448
Hauptverfasser: Lee, Jane J, Woo, Hae Dong, Kim, Ji Hyun, Jung, Eun Ju, Lee, Kyoungho
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Sprache:eng
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Zusammenfassung:ObjectivesTo investigate the association of sarcopenia, exposure to medium-term to long-term ambient particulate matter 2.5 µm and 10 µm (PM2.5 and PM10) pollution and cognitive function in a community-dwelling cohort of middle-aged and older adults in South Korea.DesignA community-based prospective cohort study.SettingIn the Korean Genome and Epidemiology Study (KoGES).ParticipantsThe participants were drawn from the seventh follow-up visit conducted between 2015 and 2016 in the KoGES community-based Ansung cohort who had participated in an ageing substudy.Outcome measuresCognitive function was evaluated by the Korean version of the Mini-Mental State Examination (K-MMSE) and decreased cognitive function was defined as a K-MMSE score of 23 or less.ResultsOf the 2274 participants (mean age 70.1 years, 58.3% women and mean annual PM2.5 and PM10 levels of 30.7 and 52.2 μg/m3, respectively), 8.7% (n=197) were sarcopenic, 35.8% (n=814) were possible sarcopenic and 55.5% (n=1263) were non-sarcopenic. The predictors of sarcopenia included body mass index, cognitive function, age, marital status, hypertension and physical activity. Exposure to PM2.5 and PM10 for an average duration of 1 month to 3 years was not selected as a predictor of sarcopenia. Participants with sarcopenia were associated with lower cognitive scores (β=−1.51, p
ISSN:2044-6055
2044-6055
DOI:10.1136/bmjopen-2024-092448