{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T16:04:24Z","timestamp":1780329864890,"version":"3.54.1"},"reference-count":52,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2025,7,12]],"date-time":"2025-07-12T00:00:00Z","timestamp":1752278400000},"content-version":"vor","delay-in-days":11,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004543","name":"China Scholarship Council","doi-asserted-by":"publisher","award":["202306230030"],"award-info":[{"award-number":["202306230030"]}],"id":[{"id":"10.13039\/501100004543","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002946","name":"Deutsches Zentrum f\u00fcr Luft- und Raumfahrt","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002946","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Scandinavian Med Sci Sports"],"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Here, we assessed the prevalence of post\u2010COVID\u2010condition (PCC, also known as long\u2010COVID) and investigated its associations with health\u2010related quality of life and immune\u2010related biomarkers in track and field masters athletes (MAs). A total of 216 MAs (114 males, 102 females; age: 58.3\u2009\u00b1\u200911.9 vs. 56.6\u2009\u00b1\u200911.7\u2009years; BMI: 23.6 [22.2\u201324.8] vs. 21.3 [20.0\u201323.6] kg\/m<jats:sup>2<\/jats:sup>) reported their post\u2010COVID\u2010conditions via the Post\u2010COVID Syndrome Questionnaire (PCSQ). In a subgroup of 108 MAs, fasting blood samples were collected to assess C\u2010reactive protein (CRP) levels as a biomarker of immune status (MAs\u2010CRP). Based on their PCSQ sum score, MAs were divided into three groups: no\/mild, moderate, and severe. Associations between PCC severity and sex, athletic specialty, and competition level were evaluated using Fisher's exact test. Forty\u2010six (21%) MAs were identified with clinically relevant moderate\u2010to\u2010severe post\u2010COVID\u201019 conditions (PCSQ score &gt;\u200910.75). The most frequently reported symptoms included musculoskeletal pain (15%), sleep disturbance (13%), sensory or respiratory symptoms (11%), fatigue (11%), and flu\u2010like symptoms (11%). PCC prevalence did not differ by sex, athletic specialties, training load, or prior competition level (all <jats:italic>p<\/jats:italic>\u2009&gt;\u20090.05). MAs with moderate\u2010to\u2010severe PCC had significantly lower physical and mental component scores of quality of life compared with those with no or mild symptoms (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). In the MAs\u2010CRP subgroup, self\u2010reported cardiac ailments and flu\u2010like symptoms were significantly and positively associated with CRP levels (Spearman <jats:italic>\u03c1<\/jats:italic>\u2009=\u20090.27\u20130.30, all <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). Post\u2010COVID\u201019 condition is associated with reduced quality of life in track and field masters athletes, independent of sex, prior competition levels, and training characteristics. Furthermore, low\u2010grade inflammation based on CRP levels was associated with self\u2010reported cardiac and flu\u2010like symptoms.<\/jats:p>","DOI":"10.1111\/sms.70106","type":"journal-article","created":{"date-parts":[[2025,7,12]],"date-time":"2025-07-12T08:28:47Z","timestamp":1752308927000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Post\u2010<scp>COVID<\/scp>\u201019 Condition in Track and Field Master Athletes: Severity, Symptoms, and Associations With Quality of Life and C\u2010Reactive Protein Levels"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8418-2275","authenticated-orcid":false,"given":"Boyi","family":"Zhang","sequence":"first","affiliation":[{"name":"Institute of Cardiology and Sports Medicine German Sport University Cologne  Cologne 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Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott C.","family":"Forbes","sequence":"additional","affiliation":[{"name":"Department of Physical Education Studies Brandon University  Brandon Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudia","family":"Kaiser\u2010Stolz","sequence":"additional","affiliation":[{"name":"Institute of Aerospace Medicine German Aerospace Center (DLR)  Cologne Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalie","family":"McLaurin","sequence":"additional","affiliation":[{"name":"Department of Kinesiology and Health Education The University of Texas at Austin  Austin USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eri","family":"Miyamoto\u2010Mikami","sequence":"additional","affiliation":[{"name":"Faculty of Health and Sports Science Juntendo University  Inzai 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