{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T13:57:18Z","timestamp":1790863038731,"version":"4.1.0"},"reference-count":58,"publisher":"Portland Press Ltd.","issue":"3","content-domain":{"domain":["portlandpress.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2013,2,1]]},"abstract":"<jats:p>The present study examined to what extent professional boxing compromises cerebral haemodynamic function and its association with CTBI (chronic traumatic brain injury). A total of 12 male professional boxers were compared with 12 age-, gender- and physical fitness-matched non-boxing controls. We assessed dCA (dynamic cerebral autoregulation; thigh-cuff technique and transfer function analysis), CVRCO2 (cerebrovascular reactivity to changes in CO2: 5% CO2 and controlled hyperventilation), orthostatic tolerance (supine to standing) and neurocognitive function (psychometric tests). Blood flow velocity in the middle cerebral artery (transcranial Doppler ultrasound), mean arterial blood pressure (finger photoplethysmography), end-tidal CO2 (capnography) and cortical oxyhaemoglobin concentration (near-IR spectroscopy) were continuously measured. Boxers were characterized by fronto-temporal neurocognitive dysfunction and impaired dCA as indicated by a lower rate of regulation and autoregulatory index (P&amp;lt;0.05 compared with controls). Likewise, CVRCO2 was also reduced resulting in a lower CVRCO2 range (P&amp;lt;0.05 compared with controls). The latter was most marked in boxers with the highest CTBI scores and correlated against the volume and intensity of sparring during training (r=\u22120.84, P&amp;lt;0.05). These impairments coincided with more marked orthostatic hypotension, cerebral hypoperfusion and corresponding cortical de-oxygenation during orthostatic stress (P&amp;lt;0.05 compared with controls). In conclusion, these findings provide the first comprehensive evidence for chronically impaired cerebral haemodynamic function in active boxers due to the mechanical trauma incurred by repetitive, sub-concussive head impact incurred during sparring training. This may help explain why CTBI is a progressive disease that manifests beyond the active boxing career.<\/jats:p>","DOI":"10.1042\/cs20120259","type":"journal-article","created":{"date-parts":[[2012,8,23]],"date-time":"2012-08-23T05:25:39Z","timestamp":1345699539000},"page":"177-189","update-policy":"https:\/\/doi.org\/10.1042\/crossmark_policy","source":"Crossref","is-referenced-by-count":115,"title":["Impaired cerebral haemodynamic function associated with chronic traumatic brain injury in professional boxers"],"prefix":"10.1042","volume":"124","author":[{"given":"Damian\u00a0M.","family":"Bailey","sequence":"first","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."},{"name":"Sondes Mol\u00e9culaires en Biologie et Stress Oxydant, Institut de Chimie Radicalaire, CNRS UMR 7273, Aix-Marseille University, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel\u00a0W.","family":"Jones","sequence":"additional","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Sinnott","sequence":"additional","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julien\u00a0V.","family":"Brugniaux","sequence":"additional","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karl\u00a0J.","family":"New","sequence":"additional","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danielle","family":"Hodson","sequence":"additional","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher\u00a0J.","family":"Marley","sequence":"additional","affiliation":[{"name":"Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, Wales, U.K."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan\u00a0D.","family":"Smirl","sequence":"additional","affiliation":[{"name":"School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigehiko","family":"Ogoh","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, Toyo University, Saitama, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip\u00a0N.","family":"Ainslie","sequence":"additional","affiliation":[{"name":"School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"288","published-online":{"date-parts":[[2012,10,5]]},"reference":[{"key":"2021113011080251700_B1","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1097\/00001199-200609000-00001","article-title":"The epidemiology and impact of traumatic brain injury: a brief overview","volume":"21","author":"Langlois","year":"2006","journal-title":"J. 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