{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T07:43:52Z","timestamp":1776930232180,"version":"3.51.2"},"reference-count":41,"publisher":"The Korean Geriatrics Society","issue":"4","license":[{"start":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T00:00:00Z","timestamp":1759276800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2022R1l1A1A01063664"],"award-info":[{"award-number":["2022R1l1A1A01063664"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002701","name":"Ministry of Education","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002701","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Grant-in-Aid for Scientific Research, Japan","award":["23K27963"],"award-info":[{"award-number":["23K27963"]}]}],"content-domain":{"domain":["e-agmr.org"],"crossmark-restriction":true},"short-container-title":["Ann Geriatr Med Res"],"published-print":{"date-parts":[[2025,12,31]]},"abstract":"<jats:p>Background: Physical activity (PA) has long been considered a key strategy in the management of sarcopenia. To our knowledge, this is the first study to examine domain-specific physical activity, including leisure-time and occupational activities, in relation to possible sarcopenia (PS) among middle-aged and older adults.Methods: We analyzed a total of 15,819 adults aged \u226540 years. PS was defined on the basis of handgrip strength (males &lt;28 kg and females &lt;18 kg) according to the Asian Working Group for Sarcopenia. The Global Physical Activity Questionnaire was used to evaluate domain-specific PA, including weekly leisure-time or occupational moderate-to-vigorous PA (MVPA). MVPA was classified into three categories: no activity, 1\u2013149 min\/week, and \u2265150 min\/week. Parameters potentially related to PS or PA were included as covariates: age, sex, household income, education, medication, alcohol and smoking habits, nutritional status, and body weight.Results: Compared with participants with no leisure-time MVPA, those with 1\u2013149 min\/week and \u2265150 min\/week of leisure-time MVPA had odds ratios (95% confidence intervals) of 0.64 (0.54, 0.74) and 0.60 (0.52, 0.68) for PS, respectively (p&lt;0.001 for both). However, occupational MVPA was not significantly related to PS. Subgroup analyses stratified by sex, age, and sedentary time revealed no significant heterogeneity (all p-values for interactions &gt;0.05).Conclusion: These findings demonstrate that PS is inversely related to leisure-time PA but not to occupational PA among middle-aged and older adults, suggesting that PA programs that focus specifically on leisure-time activities may be necessary to prevent and manage possible sarcopenia.<\/jats:p>","DOI":"10.4235\/agmr.25.0071","type":"journal-article","created":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T01:17:52Z","timestamp":1760663872000},"page":"486-494","update-policy":"https:\/\/doi.org\/10.4235\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Possible Sarcopenia is Related to Leisure-Time Physical Activity but Not to Occupational 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