Linked Life Data

20204796

Source:http://linkedlifedata.com/resource/pubmed/id/20204796

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2010-3-5
pubmed:abstractText
Near-infrared spectroscopy is a noninvasive optical technique used to monitor tissue oxygenation. Generally, the modified Beer-Lambert's law (MBL) using continuous-wave light has been used to measure active muscle oxygenation during exercise; however, it cannot measure absolute changes in the oxy- (oxy-[Hb + Mb]), deoxy- (deoxy-[Hb + Mb]), and total hemoglobin/myoglobin concentrations (total-[Hb + Mb]) because the pathlength and scattering coefficient are not measured. In contrast, the time-resolved spectroscopy (TRS) using a ultra short pulsed laser can be used to determine absolute changes in the concentration, although the temporal resolution is inferior to that in MBL. This study evaluated the absolute changes in active muscle oxygenation and the optical mean pathlength and scattering and absorption coefficient during high-intensity exercise by using the TRS system. In addition, the difference between the changes determined using TRS and MBL measurements was assessed. When the TRS and MBL measurements obtained during high-intensity exercise were compared, the total-[Hb + Mb] and oxy-[Hb + Mb] dynamics differed markedly during high-intensity exercise, while the deoxy-[Hb + Mb] dynamics and kinetics did not differ.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0065-2598
pubmed:author
pubmed:issnType
Print
pubmed:volume
662
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
225-30
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Active muscle oxygenation dynamics measured during high-intensity exercise by using two near-infrared spectroscopy methods.
pubmed:affiliation
Department of Bio-System Engineering,Graduate School of Science and Engineering, Yamagata University, 992-0038 Yonezawa, Japan. saitoh-t@yz.yamagata-u.ac.jp
pubmed:publicationType
Journal Article, Clinical Trial