{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,12]],"date-time":"2026-07-12T07:08:34Z","timestamp":1783840114200,"version":"3.55.0"},"reference-count":41,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T00:00:00Z","timestamp":1781049600000},"content-version":"vor","delay-in-days":9,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["physoc.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Physiological Reports"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    This study examined whether low\u2010normal serum total testosterone (\n                    <jats:italic>T<\/jats:italic>\n                    ) is associated with bone mineral density (BMD) or bone stress injuries (BSI) in male endurance athletes. Baseline data from 46 national\u2010 to international\u2010level Finnish athletes (age 24.8\u2009\u00b1\u20093.6\u2009years; biathlon, cross\u2010country skiing, orienteering, triathlon, Nordic combined, endurance running) were analyzed; 31 completed 1\u2010year follow\u2010up. Participants were categorized into low\n                    <jats:italic>T<\/jats:italic>\n                    (lowest quartile: 11.8\u2009\u00b1\u20091.8\u2009nmol\/L) and normal\n                    <jats:italic>T<\/jats:italic>\n                    groups (17.9\u2009\u00b1\u20093.1\u2009nmol\/L;\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.001). At baseline, BMD and\n                    <jats:italic>Z<\/jats:italic>\n                    \u2010scores did not differ at any site (all\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&gt;\u20090.5), and BSI history prevalence was similar in low\n                    <jats:italic>T<\/jats:italic>\n                    (41.7%) and normal\n                    <jats:italic>T<\/jats:italic>\n                    groups (29.4%). The low\n                    <jats:italic>T<\/jats:italic>\n                    group had lower IGF\u20101 (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.031) but comparable cortisol and insulin. During follow\u2010up, repeated\u2010measures analysis showed a significant group\u2010by\u2010time interaction for\n                    <jats:italic>T<\/jats:italic>\n                    (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.001), whereas 1\u2010year changes in BMD and\n                    <jats:italic>Z<\/jats:italic>\n                    \u2010scores did not differ between groups. Regression models showed that increased IGF\u20101 independently predicted improved total body BMD (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.01). In conclusion, low\u2010normal\n                    <jats:italic>T<\/jats:italic>\n                    in elite male endurance athletes was not associated with compromised bone health over 1\u2009year and appeared largely reversible in the follow\u2010up subset.\n                  <\/jats:p>","DOI":"10.14814\/phy2.70972","type":"journal-article","created":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T07:46:55Z","timestamp":1781077615000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Testosterone status and bone mineral density in Finnish male endurance athletes: Baseline associations and 1\u2010year follow\u2010up"],"prefix":"10.14814","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1786-5583","authenticated-orcid":false,"given":"Adam","family":"Wagner","sequence":"first","affiliation":[{"name":"Department of Sport Performance and Exercise Testing, Faculty of Sport Studies Masaryk University  Brno Czech Republic"},{"name":"University of Jyv\u00e4skyl\u00e4, Faculty of Sport and Health Sciences  Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7415-8906","authenticated-orcid":false,"given":"Katja","family":"Mj\u00f8sund","sequence":"additional","affiliation":[{"name":"National Olympic Training Centre  Helsinki Finland"},{"name":"Paavo Nurmi Centre and Unit for Health and Physical Activity University of Turku  Turku Varsinais\u2010Suomi Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-0510-2503","authenticated-orcid":false,"given":"Riina","family":"Komonen","sequence":"additional","affiliation":[{"name":"Finnish Institute of High\u2010Performance Sport KIHU  Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6607-1472","authenticated-orcid":false,"given":"Anthony C.","family":"Hackney","sequence":"additional","affiliation":[{"name":"Department of Exercise &amp; Sport Science\u2014Department of Nutrition University of North Carolina  Chapel Hill North Carolina USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9428-4689","authenticated-orcid":false,"given":"Johanna K.","family":"Ihalainen","sequence":"additional","affiliation":[{"name":"University of Jyv\u00e4skyl\u00e4, Faculty of Sport and Health Sciences  Jyv\u00e4skyl\u00e4 Finland"},{"name":"Finnish Institute of High\u2010Performance Sport KIHU  Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,10]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2265.2011.04212.x"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2017-0740"},{"key":"e_1_2_11_4_1","first-page":"381","article-title":"Testosterone increases insulin\u2010like growth factor\u20101 and insulin\u2010like growth factor\u2010binding protein","volume":"25","author":"Ashton W. 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