{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,6]],"date-time":"2026-04-06T08:12:33Z","timestamp":1775463153347,"version":"3.50.1"},"reference-count":36,"publisher":"Korea Society for Exercise Nutrition","issue":"1","license":[{"start":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T00:00:00Z","timestamp":1774915200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/2.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2024S1A5A2A01019844"],"award-info":[{"award-number":["2024S1A5A2A01019844"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["e-pan.org"],"crossmark-restriction":true},"short-container-title":["Phys Act Nutr"],"published-print":{"date-parts":[[2026,3,31]]},"abstract":"<jats:p>[Purpose] This study aimed to determine if a lifestyle-based questionnaire on vitamin D can effectively screen for vitamin D deficiency in community-dwelling older women and whether such deficiency correlates with negative functional and physiological profiles.[Methods] Eighty older women completed a vitamin D questionnaire that assessed their dietary intake, sunlight exposure behaviors, and awareness of vitamin D. They also provided fasting blood samples, with serum 25-hydroxyvitamin D levels used to classify participants as deficient or non-deficient. Body composition and performance on the Senior Fitness Test (SFT) were evaluated, alongside measurements of circulating myostatin, follistatin, tumor necrosis factor-alpha, and interleukin-1 beta. Differences between groups and correlations among questionnaire scores, serum vitamin D levels, and assessed outcomes were analyzed.[Results] The group with vitamin D deficiency exhibited lower muscle mass, poorer muscle function, and reduced cardiorespiratory endurance compared to the non-deficient group. Additionally, the deficient group had higher levels of myostatin, lower levels of follistatin, a diminished follistatin-to-myostatin ratio, and elevated inflammatory cytokines. Positive associations were found between serum vitamin D levels and questionnaire total scores with muscle mass and functional measures, while inverse relationships were noted with myostatin and inflammatory markers.[Conclusion] The questionnaire-based approach proved effective for identifying older women at risk for vitamin D deficiency. Combined with serum vitamin D status, it was associated with functional impairment and an unfavorable myokine-inflammatory profile. This supports the implementation of community screening to identify high-risk individuals for further testing and targeted lifestyle interventions.<\/jats:p>","DOI":"10.20463\/pan.2026.0004","type":"journal-article","created":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T07:57:02Z","timestamp":1774943822000},"page":"23-31","update-policy":"https:\/\/doi.org\/10.20463\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Screening performance of a lifestyle-based questionnaire score for vitamin D deficiency and related functional and physiological characteristics in older women"],"prefix":"10.20463","volume":"30","author":[{"given":"Hyeongmo","family":"Jeong","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Deokhwa","family":"Jeong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sunghwun","family":"Kang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"8359","reference":[{"key":"ref1","volume-title":"Progress report on the United Nations decade of healthy ageing, 2021-2023","year":"2023"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1007\/s12020-022-03208-3"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.5114\/pm.2019.90810"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.3390\/nu15081856"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.3390\/healthcare10071277"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1017\/s0954422419000064"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1016\/j.cellsig.2022.110355"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.3390\/nu14030521"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.3389\/fendo.2024.1327623"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1093\/clinchem\/hvad151"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1017\/s1368980013001973"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1016\/j.jnutbio.2022.109123"},{"key":"ref13","first-page":"e12492","volume-title":"What is the impact of daily oral supplementation of vitamin D3 (cholecalciferol) plus calcium on the incidence of hip fracture in older people? 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