{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T15:18:45Z","timestamp":1784819925433,"version":"3.55.0"},"reference-count":37,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2011,3,21]],"date-time":"2011-03-21T00:00:00Z","timestamp":1300665600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clin Physio Funct Imaging"],"published-print":{"date-parts":[[2011,9]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>The purpose of this study was to assess the reliability of postexercise near\u2010infrared spectroscopy (NIRS)\u2010derived measurements and their sensitivity to different exercise intensities in the field. Seventeen athletes (24\u00b71\u2003\u00b1\u20035\u00b76\u2003year) repeated, on three occasions, two 2\u2010min submaximal shuttle\u2010runs at 40% and 60% of <jats:italic>V<\/jats:italic><jats:sub>IFT<\/jats:sub> (final speed of the 30\u201315 intermittent fitness test) and a 50\u2010m shuttle\u2010run sprint (Sprint), with (OCC) or without (CON) repeated transient arterial occlusions of the medial gastrocnemius during the postexercise period. NIRS variables (i.e. oxyhaemoglobin [HbO<jats:sub>2<\/jats:sub>], deoxyhaemoglobin [HHb] and their difference [Hb<jats:sub>diff<\/jats:sub>]) were measured continuously for 3\u2003min after each exercise. Half\u2010recovery (\u00bdRec) and mean response (MRT; monoexponential curve fitting) times of muscle reoxygenation and muscle oxygen uptake (<jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/CPF_1020_mu1.gif\" xlink:title=\"inline image\"\/>) recovery were calculated. Reliability was assessed using the typical error of measurement, expressed as a coefficient of variation (CV). Postexercise recovery of muscle reoxygenation revealed CVs ranging from 16\u00b78% to 37\u00b73%; CV for <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/CPF_1020_mu2.gif\" xlink:title=\"inline image\"\/> recovery ranged from 6\u00b72% to 20\u00b79%, with no substantial differences shown between NIRS variables and exercise intensities. While running, intensity did not affect MRT or \u00bdRec for muscle reoxygenation, and differences were found for <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/CPF_1020_mu3.gif\" xlink:title=\"inline image\"\/> recovery (e.g. [Hb<jats:sub>diff<\/jats:sub>]\u2010<jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/CPF_1020_mu4.gif\" xlink:title=\"inline image\"\/> MRT\u2003=\u200328\u00b77\u2003\u00b1\u20035\u00b72, 34\u00b72\u2003\u00b1\u20035\u00b71 and 37\u00b73\u2003\u00b1\u20036\u00b72\u2003s for 40%, 60% and Sprint, respectively, <jats:italic>P<\/jats:italic>&lt;0\u00b701). To conclude, the kinetics of postexercise NIRS measurements showed CV values ranging from 6% to 37%, with no substantial differences between exercise intensities or NIRS\u2010derived variables. However, exercise intensity did influence <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/CPF_1020_mu5.gif\" xlink:title=\"inline image\"\/> recovery kinetics, but not that of muscle reoxygenation in an occlusion\u2010free condition.<\/jats:p>","DOI":"10.1111\/j.1475-097x.2011.01020.x","type":"journal-article","created":{"date-parts":[[2011,3,21]],"date-time":"2011-03-21T14:06:45Z","timestamp":1300716405000},"page":"337-346","source":"Crossref","is-referenced-by-count":45,"title":["Reproducibility and sensitivity of muscle reoxygenation and oxygen uptake recovery kinetics following running exercise in the 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