Abstract：
:The purpose of this study was to investigate the effects of acute hypoxia on the inflection point of muscle oxygenation (IPMO) using near-infrared spectroscopy during incremental bicycle exercise. Eight male subjects (age: 22 +/- 2 years) performed two ramp incremental bicycle exercise tests until exhaustion under each normoxic and hypoxic (F(I)O(2): 0.12) condition. Pulmonary gas exchange and locomotor muscle oxygenation were continuously measured. IPMO was determined as the attenuated point of muscle deoxygenation. Muscle oxygenation level was significantly lower in hypoxia than normoxia throughout the tests. IPMO was found in both conditions, and V(O)(2) at IPMO was significantly decreased in hypoxia. However the percent rate of V(O)(2peak) between normoxia and hypoxia was not significantly different. These results suggest that IPMO was not associated with absolute exercise intensity, but relative exercise intensity.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Osawa T,Kime R,Katsumura T,Yamamoto Mdoi
10.1007/978-1-4419-1241-1_56subject
Has Abstractpub_date
2010-01-01 00:00:00pages
385-90eissn
0065-2598issn
2214-8019journal_volume
662pub_type
临床试验,杂志文章abstract：:Macaca, Callithrix jacchus marmoset monkey, Pan troglodytes chimpanzee and human retinas were examined to define if short wavelength (S) cones share molecular markers with L&M cone or rod photoreceptors. S cones showed consistent differences in their immunohistochemical staining and expression levels compared to L&M c...
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