{"id":150639,"date":"2018-11-23T09:03:40","date_gmt":"2018-11-23T09:03:40","guid":{"rendered":"https:\/\/www.moor.co.uk\/applications\/muscle-oxygen-assessments\/"},"modified":"2025-10-10T13:23:13","modified_gmt":"2025-10-10T13:23:13","slug":"muscle-oxygen-assessments","status":"publish","type":"m_applications","link":"https:\/\/www.moor.co.uk\/en-ww\/applications\/muscle-oxygen-assessments\/","title":{"rendered":"Muscle Oxygen Assessments"},"content":{"rendered":"<p>Since initial work by Jobsis (1) indicated Near-Infrared Spectroscopy (NIRS) as a tool for muscle oxygenation assessments, more reviews of current applications of NIRS in sport science can be found e.g. in Wolf et al. (2) and Grassi and Quaresima (3). The basic premise is that muscle oxygenation is expressed by the haemoglobin oxygenation, i.e. the oxygen content of the red blood cells and this can be measured by optical methods as the oxygenated and deoxygenated haemoglobin components have a different absorption spectrum for near infrared light.<\/p>\n<p>While earlier approaches could measure changes in\u00a0the oxygenated and deoxygenated haemoglobin concentrations (oxyHb and deoxyHb, respectively) only, advanced methods\u00a0like spatially-resolved spectroscopy allow the oxygen saturation of haemoglobin SO<sub>2<\/sub> = oxyHb\/totalHb to be measured, where the total haemoglobin concentration totalHb = oxyHb + deoxyHb. SO<sub>2<\/sub> is expressed in percentages (%) and the\u00a0haemoglobin concentrations (oxyHb, deoxyHb and totalHb) are expressed in arbitrary units (as the exact properties of the\u00a0tissue are unknown).<\/p>\n","protected":false},"featured_media":0,"template":"","tags":[],"class_list":["post-150639","m_applications","type-m_applications","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Muscle Oxygen Assessments | Near Infrared Spectroscopy | Moor Instruments<\/title>\n<meta name=\"description\" content=\"Muscle Oxygen Assessments\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.moor.co.uk\/en-ww\/applications\/muscle-oxygen-assessments\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" 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