{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T07:53:24Z","timestamp":1777881204217,"version":"3.51.4"},"reference-count":48,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T00:00:00Z","timestamp":1775001600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T00:00:00Z","timestamp":1775001600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100009633","name":"eunice kennedy shriver national institute of child health and human development","doi-asserted-by":"publisher","award":["T32HD007490"],"award-info":[{"award-number":["T32HD007490"]}],"id":[{"id":"10.13039\/100009633","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000069","name":"national institute of arthritis and musculoskeletal and skin diseases","doi-asserted-by":"publisher","award":["R01-AR072034"],"award-info":[{"award-number":["R01-AR072034"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Journal of Sports Medicine"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Achilles tendinopathy is one of the most prevalent lower limb tendinopathies that, while commonly present in physically active people, can affect men and women of all ages and lifestyles. Although this condition can significantly affect patients\u2019 daily lives, not much is known regarding that which contributes to negative influences on patients\u2019 physical activity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To explore the association between objectively measured physical activity behavior and pain, kinesiophobia, pain catastrophizing, and symptoms of central sensitization in patients with midportion Achilles tendinopathy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cohort study; Level of evidence, 2.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>For 130 adult patients with midportion Achilles tendinopathy (mean age, 47; 55% female), physical activity was measured via wrist-worn actigraphy and assessed as daily step count and active minutes. The latter includes lightly, fairly, and very active minutes, as well as total active minutes. Linear regression analyses explored the relationship between physical activity behavior and pain intensity, pain interference, kinesiophobia, pain catastrophizing, and central sensitization. All analyses were controlled for age and sex.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>A significant association was found between pain intensity and participants\u2019 daily step count scores (regression coefficient, \u2212591; 95% CI, \u2212994 to \u2212187) and very active minutes (regression coefficient, \u22123.76; 95% CI, \u22125.86 to \u22121.67). Pain intensity was not significantly associated with patients\u2019 total, lightly, or fairly active minutes. Similarly, no significant associations were found between physical activity and pain interference, kinesiophobia, pain catastrophizing, and symptoms of central sensitization.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Only pain intensity of patients with midportion Achilles tendinopathy is significantly associated with their daily steps and time spent being very physically active, as determined via actigraphy.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671261431843","type":"journal-article","created":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T14:45:08Z","timestamp":1775227508000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["The Relationship Between Physical Activity and Pain, Pain-Related Cognitions, and Central Sensitization in Patients With Midportion Achilles Tendinopathy"],"prefix":"10.1177","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3761-0497","authenticated-orcid":false,"given":"Wouter","family":"Van Bogaert","sequence":"first","affiliation":[{"name":"Pain in Motion Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium"},{"name":"Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1590-1859","authenticated-orcid":false,"given":"Morgan N.","family":"Potter","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, University of Delaware, Newark, Delaware, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andy K.","family":"Smith","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, University of Delaware, Newark, Delaware, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4663-2022","authenticated-orcid":false,"given":"Hayley Powell","family":"Smitheman","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, University of Delaware, Newark, Delaware, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zachary J.","family":"Matusinec","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, University of Delaware, Newark, Delaware, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7566-407X","authenticated-orcid":false,"given":"Karin","family":"Gr\u00e4vare Silbernagel","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, University of Delaware, Newark, Delaware, 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